<SEC-DOCUMENT>0001564590-20-028390.txt : 20200604
<SEC-HEADER>0001564590-20-028390.hdr.sgml : 20200604
<ACCEPTANCE-DATETIME>20200604160049
ACCESSION NUMBER:		0001564590-20-028390
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		13
CONFORMED PERIOD OF REPORT:	20200604
ITEM INFORMATION:		Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers
ITEM INFORMATION:		Submission of Matters to a Vote of Security Holders
FILED AS OF DATE:		20200604
DATE AS OF CHANGE:		20200604

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			PATTERSON UTI ENERGY INC
		CENTRAL INDEX KEY:			0000889900
		STANDARD INDUSTRIAL CLASSIFICATION:	DRILLING OIL & GAS WELLS [1381]
		IRS NUMBER:				752504748
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-39270
		FILM NUMBER:		20942924

	BUSINESS ADDRESS:	
		STREET 1:		10713 WEST SAM HOUSTON PARKWAY NORTH
		STREET 2:		SUITE 800
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77064
		BUSINESS PHONE:		2817657100

	MAIL ADDRESS:	
		STREET 1:		10713 WEST SAM HOUSTON PARKWAY NORTH
		STREET 2:		SUITE 800
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77064

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	PATTERSON ENERGY INC
		DATE OF NAME CHANGE:	19940228
</SEC-HEADER>
<DOCUMENT>
<TYPE>8-K
<SEQUENCE>1
<FILENAME>pten-8k_20200604.htm
<DESCRIPTION>8-K
<TEXT>
<XBRL>
<?xml  version="1.0" encoding="utf-8"?>
<!-- DFIN ActiveDisclosure(SM) Inline XBRL Document - http://www.dfinsolutions.com/ -->
<!-- Creation Date      : 2020-06-04T15:33:11.9289480+00:00 -->
<!-- Version            : 5.0.1.385 -->
<!-- Package ID         : 67d537a6e9bc4e0e83afbecb0cfcdcff -->
<!-- Copyright (c) 2020 Donnelley Financial Solutions, Inc. All Rights Reserved. -->
<html xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xbrldi="http://xbrl.org/2006/xbrldi" xmlns:pten="http://www.patenergy.com/20200604" xmlns:us-types="http://fasb.org/us-types/2019-01-31" xmlns:us-gaap="http://fasb.org/us-gaap/2019-01-31" xmlns:stpr="http://xbrl.sec.gov/stpr/2018-01-31" xmlns:srt-types="http://fasb.org/srt-types/2019-01-31" xmlns:srt="http://fasb.org/srt/2019-01-31" xmlns:sic="http://xbrl.sec.gov/sic/2011-01-31" xmlns:naics="http://xbrl.sec.gov/naics/2017-01-31" xmlns:exch="http://xbrl.sec.gov/exch/2019-01-31" xmlns:num="http://www.xbrl.org/dtr/type/numeric" xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric" xmlns:dei="http://xbrl.sec.gov/dei/2019-01-31" xmlns:currency="http://xbrl.sec.gov/currency/2019-01-31" xmlns:country="http://xbrl.sec.gov/country/2017-01-31" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:utr="http://www.xbrl.org/2009/utr" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:iso4217="http://www.xbrl.org/2003/iso4217" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ix="http://www.xbrl.org/2013/inlineXBRL" xmlns:ixt="http://www.xbrl.org/inlineXBRL/transformation/2015-02-26" xmlns:ixt-sec="http://www.sec.gov/inlineXBRL/transformation/2015-08-31" xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html" />
<title>
pten-8k_20200604.htm
</title>
</head>
<!-- NG Converter v5.0.2.38 -->
<body><div style="display:none">
	<ix:header>
		<ix:hidden>
			<ix:nonNumeric id="F_000001" name="dei:AmendmentFlag" contextRef="C_0000889900_20200604_20200604">false</ix:nonNumeric>
			<ix:nonNumeric id="F_000004" name="dei:EntityCentralIndexKey" contextRef="C_0000889900_20200604_20200604">0000889900</ix:nonNumeric>
			<ix:nonNumeric id="F_000024" name="dei:NoTradingSymbolFlag" contextRef="C_0000889900_us-gaapStatementClassOfStockAxis_ptenPreferredStockPurchaseRightsOneMember_20200604_20200604">true</ix:nonNumeric>
		</ix:hidden>
		<ix:references>
			<link:schemaRef xlink:type="simple" xlink:href="pten-20200604.xsd" xlink:arcrole="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:link="http://www.xbrl.org/2003/linkbase"></link:schemaRef>
		</ix:references>
		<ix:resources>
			<xbrli:context id="C_0000889900_20200604_20200604">
				<xbrli:entity>
					<xbrli:identifier scheme="http://www.sec.gov/CIK">0000889900</xbrli:identifier>
				</xbrli:entity>
				<xbrli:period>
					<xbrli:startDate>2020-06-04</xbrli:startDate>
					<xbrli:endDate>2020-06-04</xbrli:endDate>
				</xbrli:period>
			</xbrli:context>
			<xbrli:context id="C_0000889900_us-gaapStatementClassOfStockAxis_us-gaapCommonStockMember_20200604_20200604">
				<xbrli:entity>
					<xbrli:identifier scheme="http://www.sec.gov/CIK">0000889900</xbrli:identifier>
					<xbrli:segment>
						<xbrldi:explicitMember dimension="us-gaap:StatementClassOfStockAxis">us-gaap:CommonStockMember</xbrldi:explicitMember>
					</xbrli:segment>
				</xbrli:entity>
				<xbrli:period>
					<xbrli:startDate>2020-06-04</xbrli:startDate>
					<xbrli:endDate>2020-06-04</xbrli:endDate>
				</xbrli:period>
			</xbrli:context>
			<xbrli:context id="C_0000889900_us-gaapStatementClassOfStockAxis_ptenPreferredStockPurchaseRightsOneMember_20200604_20200604">
				<xbrli:entity>
					<xbrli:identifier scheme="http://www.sec.gov/CIK">0000889900</xbrli:identifier>
					<xbrli:segment>
						<xbrldi:explicitMember dimension="us-gaap:StatementClassOfStockAxis">pten:PreferredStockPurchaseRightsOneMember</xbrldi:explicitMember>
					</xbrli:segment>
				</xbrli:entity>
				<xbrli:period>
					<xbrli:startDate>2020-06-04</xbrli:startDate>
					<xbrli:endDate>2020-06-04</xbrli:endDate>
				</xbrli:period>
			</xbrli:context>
		</ix:resources>
	</ix:header>
</div>
<p style="margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-family:Times New Roman;font-size:10pt;">&#160;</p>
<p style="border-top:Double 2.25pt;padding-top:1pt;margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-size:4pt;">&#160;</p>
<p style="text-align:center;margin-top:5pt;margin-bottom:0pt;text-indent:0%;font-weight:bold;font-size:18pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">UNITED STATES</p>
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-weight:bold;font-size:18pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">SECURITIES AND EXCHANGE COMMISSION</p>
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-weight:bold;font-size:12pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">WASHINGTON, D.C. 20549 </p>
<p style="text-align:center;margin-top:9pt;line-height:4pt;border-bottom:Solid 1pt;padding-bottom:1pt;margin-bottom:0pt;margin-left:40%;margin-right:40%;text-indent:0%;font-size:6pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p>
<p style="text-align:center;margin-top:9pt;margin-bottom:0pt;text-indent:0%;font-weight:bold;font-size:18pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">FORM <ix:nonNumeric id="F_000000" name="dei:DocumentType" contextRef="C_0000889900_20200604_20200604">8-K</ix:nonNumeric> </p>
<p style="text-align:center;margin-top:9pt;line-height:4pt;border-bottom:Solid 1pt;padding-bottom:1pt;margin-bottom:0pt;margin-left:40%;margin-right:40%;text-indent:0%;font-size:6pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p>
<p style="text-align:center;margin-top:9pt;margin-bottom:0pt;text-indent:0%;font-weight:bold;font-size:12pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">CURRENT REPORT </p>
<p style="text-align:center;margin-top:9pt;margin-bottom:0pt;text-indent:0%;font-weight:bold;font-size:12pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 </p>
<p style="text-align:center;margin-top:9pt;margin-bottom:0pt;text-indent:0%;font-weight:bold;font-family:Times New Roman;font-size:10pt;font-style:normal;text-transform:none;font-variant: normal;">Date of Report (Date of earliest event reported): <ix:nonNumeric id="F_000002" name="dei:DocumentPeriodEndDate" contextRef="C_0000889900_20200604_20200604" format="ixt:datemonthdayyearen">June 4, 2020</ix:nonNumeric></p>
<p style="text-align:center;margin-top:9pt;line-height:4pt;border-bottom:Solid 1pt;padding-bottom:1pt;margin-bottom:0pt;margin-left:40%;margin-right:40%;text-indent:0%;font-size:6pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p>
<p style="text-align:center;margin-bottom:0pt;margin-top:12pt;text-indent:0%;font-weight:bold;font-size:24pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;"><ix:nonNumeric id="F_000003" name="dei:EntityRegistrantName" contextRef="C_0000889900_20200604_20200604">Patterson-UTI Energy, Inc.</ix:nonNumeric> </p>
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-weight:bold;font-size:7.5pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;"> (Exact name of Registrant as Specified in Its Charter) </p>
<p style="text-align:center;margin-top:9pt;line-height:4pt;border-bottom:Solid 1pt;padding-bottom:1pt;margin-bottom:0pt;margin-left:40%;margin-right:40%;text-indent:0%;font-size:6pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p>
<p style="margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-size:9pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p>
<div>
<table border="0" cellspacing="0" cellpadding="0" style="margin:auto;border-collapse:collapse; width:100%;">
<tr>
<td valign="bottom" style="width:33%;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-family:Times New Roman;font-size:10pt;font-style:normal;text-transform:none;font-variant: normal;"><ix:nonNumeric id="F_000007" name="dei:EntityIncorporationStateCountryCode" contextRef="C_0000889900_20200604_20200604" format="ixt-sec:stateprovnameen">Delaware</ix:nonNumeric></p></td>
<td valign="bottom" style="width:33%;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-family:Times New Roman;font-size:10pt;font-style:normal;text-transform:none;font-variant: normal;"><ix:nonNumeric id="F_000006" name="dei:EntityFileNumber" contextRef="C_0000889900_20200604_20200604">1-39270</ix:nonNumeric></p></td>
<td valign="bottom" style="width:33%;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-family:Times New Roman;font-size:10pt;font-style:normal;text-transform:none;font-variant: normal;"><ix:nonNumeric id="F_000008" name="dei:EntityTaxIdentificationNumber" contextRef="C_0000889900_20200604_20200604">75-2504748</ix:nonNumeric></p></td>
</tr>
<tr>
<td valign="bottom" style="width:33%;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:7.5pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">(State or Other Jurisdiction</p>
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:7.5pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">of Incorporation)</p></td>
<td valign="bottom" style="width:33%;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:7.5pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">(Commission </p>
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:7.5pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">File Number)</p></td>
<td valign="bottom" style="width:33%;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:7.5pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">(IRS Employer</p>
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:7.5pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Identification No.)</p></td>
</tr>
<tr style="height:12pt;">
<td valign="bottom" style="width:33%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="bottom" style="width:33%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="bottom" style="width:33%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
</tr>
<tr>
<td valign="bottom" style="width:33%;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-family:Times New Roman;font-size:10pt;font-style:normal;text-transform:none;font-variant: normal;"><ix:nonNumeric id="F_000009" name="dei:EntityAddressAddressLine1" contextRef="C_0000889900_20200604_20200604">10713 W. Sam Houston Pkwy N</ix:nonNumeric>, <ix:nonNumeric id="F_000010" name="dei:EntityAddressAddressLine2" contextRef="C_0000889900_20200604_20200604">Suite 800</ix:nonNumeric>, <ix:nonNumeric id="F_000011" name="dei:EntityAddressCityOrTown" contextRef="C_0000889900_20200604_20200604">Houston</ix:nonNumeric>, <ix:nonNumeric id="F_000012" name="dei:EntityAddressStateOrProvince" contextRef="C_0000889900_20200604_20200604" format="ixt-sec:stateprovnameen">Texas</ix:nonNumeric></p></td>
<td valign="bottom" style="padding-left:7.2pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:33%;">
<p style="line-height:2pt;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:4pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
<td valign="bottom" style="width:33%;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-family:Times New Roman;font-size:10pt;font-style:normal;text-transform:none;font-variant: normal;"><ix:nonNumeric id="F_000013" name="dei:EntityAddressPostalZipCode" contextRef="C_0000889900_20200604_20200604">77064</ix:nonNumeric></p></td>
</tr>
<tr>
<td valign="bottom" style="width:33%;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:7.5pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">(Address of Principal Executive Offices)</p></td>
<td valign="bottom" style="padding-left:7.2pt;padding-Right:0pt;padding-Top:0pt;padding-Bottom:0pt;width:33%;">
<p style="line-height:2pt;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:4pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
<td valign="bottom" style="width:33%;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:7.5pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">(Zip Code)</p></td>
</tr>
</table></div>
<p style="text-align:center;margin-top:9pt;margin-bottom:0pt;text-indent:0%;font-weight:bold;font-family:Times New Roman;font-size:10pt;font-style:normal;text-transform:none;font-variant: normal;">Registrant&#8217;s Telephone Number, Including Area Code: <span style="Background-color:#FFFFFF;color:#000000;"><ix:nonNumeric id="F_000014" name="dei:CityAreaCode" contextRef="C_0000889900_20200604_20200604">281</ix:nonNumeric></span>-<ix:nonNumeric id="F_000015" name="dei:LocalPhoneNumber" contextRef="C_0000889900_20200604_20200604">765-7100</ix:nonNumeric></p>
<p style="text-align:center;margin-top:9pt;margin-bottom:0pt;text-indent:0%;font-weight:bold;font-family:Times New Roman;font-size:10pt;font-style:normal;text-transform:none;font-variant: normal;">Not Applicable </p>
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-weight:bold;font-size:7.5pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">(Former Name or Former Address, if Changed Since Last Report) </p>
<p style="text-align:center;margin-top:9pt;line-height:4pt;border-bottom:Solid 1pt;padding-bottom:1pt;margin-bottom:0pt;margin-left:40%;margin-right:40%;text-indent:0%;font-size:6pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p>
<p style="margin-top:9pt;margin-bottom:0pt;text-indent:0%;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instructions A.2. below): </p>
<p style="margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-size:9pt;">&#160;</p>
<div>
<table border="0" cellspacing="0" cellpadding="0" style="margin:auto;border-collapse:collapse; width:100%;">
<tr>
<td valign="top" style="width:3.34%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Segoe UI Symbol;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;"><ix:nonNumeric id="F_000016" name="dei:WrittenCommunications" contextRef="C_0000889900_20200604_20200604" format="ixt-sec:boolballotbox">&#9744;</ix:nonNumeric></p></td>
<td valign="top" style="width:96.66%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) </p></td>
</tr>
<tr>
<td valign="top" style="width:3.34%;">
<p style="margin-top:6pt;margin-bottom:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Segoe UI Symbol;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;"><ix:nonNumeric id="F_000017" name="dei:SolicitingMaterial" contextRef="C_0000889900_20200604_20200604" format="ixt-sec:boolballotbox">&#9744;</ix:nonNumeric></p></td>
<td valign="top" style="width:96.66%;">
<p style="margin-top:6pt;margin-bottom:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) </p></td>
</tr>
<tr>
<td valign="top" style="width:3.34%;">
<p style="margin-top:6pt;margin-bottom:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Segoe UI Symbol;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;"><ix:nonNumeric id="F_000018" name="dei:PreCommencementTenderOffer" contextRef="C_0000889900_20200604_20200604" format="ixt-sec:boolballotbox">&#9744;</ix:nonNumeric></p></td>
<td valign="top" style="width:96.66%;">
<p style="margin-top:6pt;margin-bottom:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) </p></td>
</tr>
<tr>
<td valign="top" style="width:3.34%;">
<p style="margin-top:6pt;margin-bottom:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Segoe UI Symbol;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;"><ix:nonNumeric id="F_000019" name="dei:PreCommencementIssuerTenderOffer" contextRef="C_0000889900_20200604_20200604" format="ixt-sec:boolballotbox">&#9744;</ix:nonNumeric></p></td>
<td valign="top" style="width:96.66%;">
<p style="margin-top:6pt;margin-bottom:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) </p></td>
</tr>
</table></div>
<p style="margin-top:9pt;margin-bottom:0pt;text-indent:0%;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Securities registered pursuant to Section 12(b) of the Act:</p>
<p style="margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-size:9pt;">&#160;</p>
<div style="align:left;">
<table border="0" cellspacing="0" cellpadding="0" style="border-collapse:collapse; width:100%;">
<tr>
<td valign="bottom" style="width:38%; border-bottom:solid 0.75pt #000000;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:8pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Title of each class</p></td>
<td valign="bottom" style="width:1%; border-bottom:solid 0.75pt transparent;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;;font-size:8pt;">&#160;</p></td>
<td valign="bottom" style="width:15%; border-bottom:solid 0.75pt #000000;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:8pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Trading Symbol</p></td>
<td valign="bottom" style="width:1%; border-bottom:solid 0.75pt transparent;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;;font-size:8pt;">&#160;</p></td>
<td valign="bottom" style="width:45%; border-bottom:solid 0.75pt #000000;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:8pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Name of each exchange on which registered</p></td>
</tr>
<tr>
<td valign="bottom" style="width:38%; border-top:solid 0.75pt #000000;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;color:#000000;font-size:8pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;"><ix:nonNumeric id="F_000020" name="dei:Security12bTitle" contextRef="C_0000889900_us-gaapStatementClassOfStockAxis_us-gaapCommonStockMember_20200604_20200604">Common Stock, $0.01 Par Value</ix:nonNumeric></p></td>
<td valign="bottom" style="width:1%;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:8pt;">&#160;</p></td>
<td valign="bottom" style="width:15%; border-top:solid 0.75pt #000000;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:8pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;"><ix:nonNumeric id="F_000021" name="dei:TradingSymbol" contextRef="C_0000889900_us-gaapStatementClassOfStockAxis_us-gaapCommonStockMember_20200604_20200604">PTEN</ix:nonNumeric></p></td>
<td valign="bottom" style="width:1%;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:8pt;">&#160;</p></td>
<td valign="bottom" style="width:45%; border-top:solid 0.75pt #000000;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;color:#000000;font-size:8pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">The <ix:nonNumeric id="F_000022" name="dei:SecurityExchangeName" contextRef="C_0000889900_us-gaapStatementClassOfStockAxis_us-gaapCommonStockMember_20200604_20200604" format="ixt-sec:exchnameen">Nasdaq</ix:nonNumeric> Global Select Marke<span style="font-weight:bold;">t</span></p></td>
</tr>
<tr>
<td valign="bottom" style="width:38%;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:8pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;"><ix:nonNumeric id="F_000023" name="dei:Security12bTitle" contextRef="C_0000889900_us-gaapStatementClassOfStockAxis_ptenPreferredStockPurchaseRightsOneMember_20200604_20200604">Preferred Stock Purchase Rights</ix:nonNumeric></p></td>
<td valign="bottom" style="width:1%;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:8pt;">&#160;</p></td>
<td valign="bottom" style="width:15%;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="bottom" style="width:1%;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:8pt;">&#160;</p></td>
<td valign="bottom" style="width:45%;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;color:#000000;font-size:8pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">The <ix:nonNumeric id="F_000025" name="dei:SecurityExchangeName" contextRef="C_0000889900_us-gaapStatementClassOfStockAxis_ptenPreferredStockPurchaseRightsOneMember_20200604_20200604" format="ixt-sec:exchnameen">Nasdaq</ix:nonNumeric> Global Select Marke<span style="font-weight:bold;">t</span></p></td>
</tr>
</table></div>
<p style="margin-top:9pt;margin-bottom:0pt;text-indent:0%;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (&#167;&#8201;230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (&#167;&#8201;240.12b-2 of this chapter).</p>
<p style="margin-top:9pt;margin-bottom:0pt;text-indent:0%;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Emerging growth company <span style="font-family:Segoe UI Symbol;"><ix:nonNumeric id="F_000005" name="dei:EntityEmergingGrowthCompany" contextRef="C_0000889900_20200604_20200604" format="ixt-sec:boolballotbox">&#9744;</ix:nonNumeric></span></p>
<p style="margin-top:9pt;margin-bottom:0pt;text-indent:0%;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. <span style="font-family:Segoe UI Symbol;">&#9744;</span></p>
<p style="margin-top:12pt;margin-top:12pt;margin-bottom:0pt;text-indent:0%;font-family:Times New Roman;font-size:10pt;">&#160;</p>
<hr style="page-break-after:always" />
<p style="margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-family:Times New Roman;font-size:10pt;">&#160;</p>
<p style="margin-top:5pt;border-bottom:Double 2.25pt;padding-bottom:1pt;margin-bottom:0pt;text-indent:0%;font-weight:bold;;font-size:4pt;">&#160;</p>
<p style="margin-top:12pt;margin-bottom:0pt;text-indent:0%;font-weight:bold;font-family:Times New Roman;font-size:10pt;font-style:normal;text-transform:none;font-variant: normal;">Item 5.02 Departure of Directors or Certain Officers&#59; Election of Directors&#59; Appointment of Certain Officers&#59; Compensatory Arrangements of Certain Officers. </p>
<p style="margin-bottom:10pt;margin-top:10pt;text-indent:0%;color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">(b)&#160;On June&#160;4, 2020, Charles O. Buckner&#8217;s previously announced retirement from the Board of Directors of Patterson-UTI Energy, Inc. (the &#8220;Company&#8221;) became effective.&#160;&#160;On June 4, 2020, as previously announced, Mark S. Siegel stepped down as Executive Chairman of the Company and his retirement from the Board became effective.&#160;&#160;Curtis W. Huff became non-executive Chairman of the Board and the size of the Board was reduced from eight members to six members.</p>
<p style="margin-top:12pt;margin-bottom:0pt;text-indent:0%;font-weight:bold;color:#000000;font-family:Times New Roman;font-size:10pt;font-style:normal;text-transform:none;font-variant: normal;">Item&#160;5.07 Submission of Matters to a Vote of Security Holders.</p>
<p style="margin-bottom:10pt;margin-top:10pt;text-indent:0%;color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">The Annual Meeting of Stockholders of the Company was held on June&#160;4, 2020. Of the 186,356,475 shares of the Company&#8217;s Common Stock outstanding and entitled to vote at the meeting, 170,594,485 were present either in person or by proxy. </p>
<p style="margin-bottom:10pt;margin-top:10pt;text-indent:0%;color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">The following describes the matters considered by the Company&#8217;s stockholders at the Annual Meeting, as well as the votes cast at the meeting: </p>
<div style="align:left;">
<table border="0" cellspacing="0" cellpadding="0" style="border-collapse:collapse; width:100%;">
<tr>
<td valign="top" style="width:2.5%;white-space:nowrap">
<p style="margin-bottom:10pt;margin-top:10pt;color:#000000;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="top" style="width:3.33%;white-space:nowrap">
<p style="margin-bottom:10pt;margin-top:10pt;color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;"><span style="color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">1.</span></p></td>
<td valign="top">
<p style="margin-bottom:10pt;margin-top:10pt;color:#000000;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;font-family:Times New Roman;font-size:10pt;">To elect six directors to the Company&#8217;s Board of Directors to serve until the next annual meeting of the stockholders or until their respective successors are elected and qualified.</p></td></tr></table></div>
<div>
<table border="0" cellspacing="0" cellpadding="0" style="margin:auto;border-collapse:collapse; width:95%;">
<tr>
<td valign="bottom" style="width:auto; border-bottom:solid 0.75pt #000000;white-space:nowrap;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Nominee</p></td>
<td valign="bottom" style="width:auto; border-bottom:solid 0.75pt transparent;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
<td colspan="3" valign="bottom" style="width:auto; border-bottom:solid 0.75pt #000000;white-space:nowrap;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Votes For</p></td>
<td valign="bottom" style="width:auto; border-bottom:solid 0.75pt transparent;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
<td colspan="3" valign="bottom" style="width:auto; border-bottom:solid 0.75pt #000000;white-space:nowrap;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Votes Withheld</p></td>
<td valign="bottom" style="width:auto; border-bottom:solid 0.75pt transparent;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
<td colspan="3" valign="bottom" style="width:auto; border-bottom:solid 0.75pt #000000;white-space:nowrap;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Broker Non-votes</p></td>
</tr>
<tr>
<td valign="bottom" style="width:auto;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:7.5pt;;text-indent:-7.5pt;;color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Tiffany (TJ) Thom Cepak</p></td>
<td valign="bottom" style="width:auto;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="bottom" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="top" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">138,960,914</p></td>
<td valign="bottom" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="bottom" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="bottom" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="top" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">16,816,384</p></td>
<td valign="bottom" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="bottom" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="bottom" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="top" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">14,817,187</p></td>
<td valign="bottom" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
</tr>
<tr>
<td valign="bottom" style="width:auto;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:7.5pt;;text-indent:-7.5pt;;color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Michael W. Conlon</p></td>
<td valign="bottom" style="width:auto;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
<td valign="bottom" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="top" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">133,405,454</p></td>
<td valign="bottom" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="bottom" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="bottom" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="top" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">22,371,844</p></td>
<td valign="bottom" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="bottom" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="bottom" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="top" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">14,817,187</p></td>
<td valign="bottom" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
</tr>
<tr>
<td valign="bottom" style="width:auto;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:7.5pt;;text-indent:-7.5pt;;color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">William A. Hendricks, Jr.</p></td>
<td valign="bottom" style="width:auto;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
<td valign="bottom" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="top" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">136,778,909</p></td>
<td valign="bottom" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="bottom" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="bottom" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="top" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">18,998,389</p></td>
<td valign="bottom" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="bottom" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="bottom" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="top" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">14,817,187</p></td>
<td valign="bottom" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
</tr>
<tr>
<td valign="bottom" style="width:auto;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:7.5pt;;text-indent:-7.5pt;;color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Curtis W. Huff</p></td>
<td valign="bottom" style="width:auto;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
<td valign="bottom" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="top" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">136,012,428</p></td>
<td valign="bottom" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="bottom" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="bottom" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="top" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">19,764,870</p></td>
<td valign="bottom" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="bottom" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="bottom" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="top" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">14,817,187</p></td>
<td valign="bottom" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
</tr>
<tr>
<td valign="bottom" style="width:auto;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:7.5pt;;text-indent:-7.5pt;;color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Terry H. Hunt</p></td>
<td valign="bottom" style="width:auto;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
<td valign="bottom" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="top" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">135,728,037</p></td>
<td valign="bottom" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="bottom" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="bottom" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="top" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">20,049,261</p></td>
<td valign="bottom" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="bottom" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="bottom" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="top" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">14,817,187</p></td>
<td valign="bottom" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
</tr>
<tr>
<td valign="bottom" style="width:auto;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:7.5pt;;text-indent:-7.5pt;;color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Janeen S. Judah</p></td>
<td valign="bottom" style="width:auto;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
<td valign="bottom" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="top" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">139,382,759</p></td>
<td valign="bottom" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="bottom" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="bottom" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="top" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">16,394,539</p></td>
<td valign="bottom" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="bottom" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="bottom" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="top" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">14,817,187</p></td>
<td valign="bottom" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
</tr>
</table></div>
<div style="align:left;">
<table border="0" cellspacing="0" cellpadding="0" style="border-collapse:collapse; width:100%;">
<tr>
<td valign="top" style="width:2.5%;white-space:nowrap">
<p style="margin-top:12pt;margin-bottom:0pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="top" style="width:3.33%;white-space:nowrap">
<p style="margin-top:12pt;margin-bottom:0pt;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;"><span style="font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">2.</span></p></td>
<td valign="top">
<p style="margin-top:12pt;margin-bottom:0pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;font-family:Times New Roman;font-size:10pt;"><span style="color:#000000;">To ratify the selection of PricewaterhouseCoopers LLP as the Company&#8217;s independent registered public accounting firm for the fiscal year ending December&#160;31, 2020.</span></p></td></tr></table></div>
<p style="margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-family:Times New Roman;font-size:10pt;">&#160;</p>
<div>
<table border="0" cellspacing="0" cellpadding="0" style="margin:auto;border-collapse:collapse; width:90.1%;">
<tr>
<td valign="bottom" style="width:24.74%; border-bottom:solid 0.75pt #000000;white-space:nowrap;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Votes For</p></td>
<td valign="bottom" style="width:auto; border-bottom:solid 0.75pt transparent;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td colspan="3" valign="bottom" style="width:auto; border-bottom:solid 0.75pt #000000;white-space:nowrap;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Votes Against</p></td>
<td valign="bottom" style="width:auto; border-bottom:solid 0.75pt transparent;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td colspan="3" valign="bottom" style="width:auto; border-bottom:solid 0.75pt #000000;white-space:nowrap;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Abstentions</p></td>
<td valign="bottom" style="width:auto; border-bottom:solid 0.75pt transparent;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="bottom" style="width:auto; border-bottom:solid 0.75pt #000000;white-space:nowrap;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Broker Non-votes</p></td>
</tr>
<tr>
<td valign="top" style="width:24.74%;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">164,279,771</p></td>
<td valign="bottom" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="top" style="width:auto;white-space:nowrap;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="top" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">6,186,908</p></td>
<td valign="top" style="width:auto;white-space:nowrap;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="bottom" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="top" style="width:auto;white-space:nowrap;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="top" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">127,806</p></td>
<td valign="top" style="width:auto;white-space:nowrap;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="bottom" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="top" style="width:auto;white-space:nowrap;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">0</p></td>
</tr>
</table></div>
<div style="align:left;">
<table border="0" cellspacing="0" cellpadding="0" style="border-collapse:collapse; width:100%;">
<tr>
<td valign="top" style="width:2.5%;white-space:nowrap">
<p style="margin-top:12pt;margin-bottom:0pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="top" style="width:3.33%;white-space:nowrap">
<p style="margin-top:12pt;margin-bottom:0pt;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;"><span style="font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">3.</span></p></td>
<td valign="top">
<p style="margin-top:12pt;margin-bottom:0pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;font-family:Times New Roman;font-size:10pt;"><span style="color:#000000;">To cast a vote to approve, on an advisory basis, the Company&#8217;s compensation of its named executive officers as set forth in the proxy statement for the Annual Meeting.</span></p></td></tr></table></div>
<p style="margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-family:Times New Roman;font-size:10pt;">&#160;</p>
<div>
<table border="0" cellspacing="0" cellpadding="0" style="margin:auto;border-collapse:collapse; width:90.1%;">
<tr>
<td valign="bottom" style="width:24.74%; border-bottom:solid 0.75pt #000000;white-space:nowrap;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Votes For</p></td>
<td valign="bottom" style="width:auto; border-bottom:solid 0.75pt transparent;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td colspan="3" valign="bottom" style="width:auto; border-bottom:solid 0.75pt #000000;white-space:nowrap;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Votes Against</p></td>
<td valign="bottom" style="width:auto; border-bottom:solid 0.75pt transparent;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td colspan="3" valign="bottom" style="width:auto; border-bottom:solid 0.75pt #000000;white-space:nowrap;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Abstentions</p></td>
<td valign="bottom" style="width:auto; border-bottom:solid 0.75pt transparent;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td colspan="3" valign="bottom" style="width:auto; border-bottom:solid 0.75pt #000000;white-space:nowrap;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Broker Non-votes</p></td>
</tr>
<tr>
<td valign="top" style="width:24.74%;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">149,521,756</p></td>
<td valign="bottom" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="top" style="width:auto;white-space:nowrap;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="top" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">5,792,184</p></td>
<td valign="top" style="width:auto;white-space:nowrap;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="bottom" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="top" style="width:auto;white-space:nowrap;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="top" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">463,358</p></td>
<td valign="top" style="width:auto;white-space:nowrap;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="bottom" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="top" style="width:auto;white-space:nowrap;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="top" style="width:auto;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">14,817,187</p></td>
<td valign="top" style="width:auto;white-space:nowrap;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
</tr>
</table></div>
<p style="margin-top:12pt;margin-top:12pt;margin-bottom:0pt;text-indent:0%;font-family:Times New Roman;font-size:10pt;">&#160;</p>
<hr style="page-break-after:always" />
<p style="margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-family:Times New Roman;font-size:10pt;">&#160;</p>
<p style="text-align:center;margin-top:12pt;margin-bottom:0pt;text-indent:0%;font-weight:bold;font-family:Times New Roman;font-size:10pt;font-style:normal;text-transform:none;font-variant: normal;"><span style="font-weight:bold;font-family:Times New Roman;font-size:10pt;font-style:normal;text-transform:none;font-variant: normal;">SIGNATURES</span></p>
<p style="margin-top:12pt;margin-bottom:0pt;text-indent:0%;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.</p>
<p style="margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p>
<div style="align:left;">
<table border="0" cellspacing="0" cellpadding="0" style="border-collapse:collapse; width:100%;">
<tr>
<td valign="top" style="width:48%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:12pt;">&#160;</p></td>
<td valign="bottom" style="width:1%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td colspan="3" valign="bottom" style="width:47%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Patterson-UTI Energy, Inc.</p></td>
</tr>
<tr>
<td valign="top" style="width:48%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:12pt;">&#160;</p></td>
<td valign="bottom" style="width:1%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="bottom" style="width:3%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:12pt;">&#160;</p></td>
<td valign="bottom" style="width:1%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:12pt;">&#160;</p></td>
<td valign="bottom" style="width:47%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:12pt;">&#160;</p></td>
</tr>
<tr>
<td valign="top" style="width:48%; border-bottom:solid 0.75pt transparent;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-style:italic;font-family:Times New Roman;font-size:10pt;font-weight:normal;text-transform:none;font-variant: normal;">June 4, 2020</p></td>
<td valign="bottom" style="width:1%; border-bottom:solid 0.75pt transparent;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="bottom" style="width:3%; border-bottom:solid 0.75pt transparent;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-style:italic;font-family:Times New Roman;font-size:10pt;font-weight:normal;text-transform:none;font-variant: normal;">By:</p></td>
<td valign="bottom" style="width:1%; border-bottom:solid 0.75pt transparent;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="bottom" style="width:47%; border-bottom:solid 0.75pt #000000;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-style:italic;font-family:Times New Roman;font-size:10pt;font-weight:normal;text-transform:none;font-variant: normal;">/s/ Seth D. Wexler</p></td>
</tr>
<tr>
<td valign="top" style="width:48%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="bottom" style="width:1%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="bottom" style="width:3%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="bottom" style="width:1%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="bottom" style="width:47%; border-top:solid 0.75pt #000000;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-style:italic;font-family:Times New Roman;font-size:10pt;font-weight:normal;text-transform:none;font-variant: normal;">Name: Seth D. Wexler</p></td>
</tr>
<tr>
<td valign="top" style="width:48%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="bottom" style="width:1%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="bottom" style="width:3%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="bottom" style="width:1%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-family:Times New Roman;font-size:10pt;">&#160;</p></td>
<td valign="bottom" style="width:47%;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-style:italic;font-family:Times New Roman;font-size:10pt;font-weight:normal;text-transform:none;font-variant: normal;">Title:&#160;Senior Vice&#160;President, General Counsel and Secretary</p></td>
</tr>
</table></div>
<p style="margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-family:Times New Roman;font-size:10pt;">&#160;</p>
<p style="margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-family:Times New Roman;font-size:10pt;">&#160;</p>
<p style="margin-top:12pt;margin-top:12pt;margin-bottom:0pt;text-indent:0%;font-family:Times New Roman;font-size:10pt;">&#160;</p></body>
</html>
</XBRL>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-101.SCH
<SEQUENCE>2
<FILENAME>pten-20200604.xsd
<DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA
<TEXT>
<XBRL>
<?xml version="1.0" encoding="us-ascii"?>
<!-- DFIN ActiveDisclosure(SM) XBRL Schema Document - http://www.dfinsolutions.com/ -->
<!-- Creation Date      : 2020-05-29T20:14:00.0741614+00:00 -->
<!-- Version            : 5.0.1.385 -->
<!-- Package ID         : 67d537a6e9bc4e0e83afbecb0cfcdcff -->
<!-- Copyright (c) 2020 Donnelley Financial Solutions, Inc. All Rights Reserved. -->
<xsd:schema xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric" xmlns:num="http://www.xbrl.org/dtr/type/numeric" xmlns:sic="http://xbrl.sec.gov/sic/2011-01-31" xmlns:stpr="http://xbrl.sec.gov/stpr/2018-01-31" xmlns:naics="http://xbrl.sec.gov/naics/2017-01-31" xmlns:srt-types="http://fasb.org/srt-types/2019-01-31" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:srt="http://fasb.org/srt/2019-01-31" xmlns:us-gaap="http://fasb.org/us-gaap/2019-01-31" xmlns:dei="http://xbrl.sec.gov/dei/2019-01-31" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:country="http://xbrl.sec.gov/country/2017-01-31" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:currency="http://xbrl.sec.gov/currency/2019-01-31" xmlns:pten="http://www.patenergy.com/20200604" xmlns:us-types="http://fasb.org/us-types/2019-01-31" xmlns:exch="http://xbrl.sec.gov/exch/2019-01-31" attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://www.patenergy.com/20200604" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <xsd:import schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" namespace="http://www.xbrl.org/2003/instance" />
  <xsd:import schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" namespace="http://www.xbrl.org/2003/linkbase" />
  <xsd:import schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd" namespace="http://xbrl.org/2005/xbrldt" />
  <xsd:import schemaLocation="https://xbrl.sec.gov/country/2017/country-2017-01-31.xsd" namespace="http://xbrl.sec.gov/country/2017-01-31" />
  <xsd:import schemaLocation="https://xbrl.sec.gov/currency/2019/currency-2019-01-31.xsd" namespace="http://xbrl.sec.gov/currency/2019-01-31" />
  <xsd:import schemaLocation="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd" namespace="http://xbrl.sec.gov/dei/2019-01-31" />
  <xsd:import schemaLocation="http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd" namespace="http://www.xbrl.org/dtr/type/non-numeric" />
  <xsd:import schemaLocation="http://www.xbrl.org/dtr/type/numeric-2009-12-16.xsd" namespace="http://www.xbrl.org/dtr/type/numeric" />
  <xsd:import schemaLocation="https://xbrl.sec.gov/exch/2019/exch-2019-01-31.xsd" namespace="http://xbrl.sec.gov/exch/2019-01-31" />
  <xsd:import schemaLocation="http://www.xbrl.org/lrr/arcrole/factExplanatory-2009-12-16.xsd" namespace="http://www.xbrl.org/2009/arcrole/fact-explanatoryFact" />
  <xsd:import schemaLocation="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd" namespace="http://www.xbrl.org/2009/role/negated" />
  <xsd:import schemaLocation="http://www.xbrl.org/lrr/role/net-2009-12-16.xsd" namespace="http://www.xbrl.org/2009/role/net" />
  <xsd:import schemaLocation="https://xbrl.sec.gov/naics/2017/naics-2017-01-31.xsd" namespace="http://xbrl.sec.gov/naics/2017-01-31" />
  <xsd:import schemaLocation="https://xbrl.sec.gov/sic/2011/sic-2011-01-31.xsd" namespace="http://xbrl.sec.gov/sic/2011-01-31" />
  <xsd:import schemaLocation="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd" namespace="http://fasb.org/srt/2019-01-31" />
  <xsd:import schemaLocation="http://xbrl.fasb.org/srt/2019/elts/srt-roles-2019-01-31.xsd" namespace="http://fasb.org/srt-roles/2019-01-31" />
  <xsd:import schemaLocation="http://xbrl.fasb.org/srt/2019/elts/srt-types-2019-01-31.xsd" namespace="http://fasb.org/srt-types/2019-01-31" />
  <xsd:import schemaLocation="https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd" namespace="http://xbrl.sec.gov/stpr/2018-01-31" />
  <xsd:import schemaLocation="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd" namespace="http://fasb.org/us-gaap/2019-01-31" />
  <xsd:import schemaLocation="http://xbrl.fasb.org/us-gaap/2019/elts/us-roles-2019-01-31.xsd" namespace="http://fasb.org/us-roles/2019-01-31" />
  <xsd:import schemaLocation="http://xbrl.fasb.org/us-gaap/2019/elts/us-types-2019-01-31.xsd" namespace="http://fasb.org/us-types/2019-01-31" />
  <xsd:annotation>
    <xsd:appinfo>
      <link:roleType id="TemplateLink" roleURI="http://www.patenergy.com/20200604/role/TemplateLink" xmlns:link="http://www.xbrl.org/2003/linkbase">
        <link:definition>00000 - Document - Template Link</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="pten-20200604_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:title="Definition Links, all" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="pten-20200604_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:title="Label Links, all" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="pten-20200604_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:title="Presentation Links, all" xlink:type="simple" />
      <link:roleType roleURI="http://www.patenergy.com/20200604/taxonomy/role/DocumentDocumentAndEntityInformation" id="Role_DocumentDocumentAndEntityInformation">
        <link:definition>100000 - Document - Document and Entity Information</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
    </xsd:appinfo>
  </xsd:annotation>
  <xsd:element id="pten_DocumentAndEntityInformationLineItems" name="DocumentAndEntityInformationLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="pten_DocumentAndEntityInformationTable" name="DocumentAndEntityInformationTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="pten_PreferredStockPurchaseRightsOneMember" name="PreferredStockPurchaseRightsOneMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
</xsd:schema>
</XBRL>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-101.DEF
<SEQUENCE>3
<FILENAME>pten-20200604_def.xml
<DESCRIPTION>XBRL TAXONOMY EXTENSION DEFINITION LINKBASE
<TEXT>
<XBRL>
<?xml version="1.0" encoding="us-ascii"?>
<!-- DFIN ActiveDisclosure(SM) XBRL Linkbase Document - http://www.dfinsolutions.com/ -->
<!-- Creation Date      : 2020-05-29T20:14:00.0741614+00:00 -->
<!-- Version            : 5.0.1.385 -->
<!-- Package ID         : 67d537a6e9bc4e0e83afbecb0cfcdcff -->
<!-- Copyright (c) 2020 Donnelley Financial Solutions, Inc. All Rights Reserved. -->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all" arcroleURI="http://xbrl.org/int/dim/arcrole/all" />
  <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default" arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" />
  <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain" arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" />
  <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member" arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" />
  <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension" arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" />
  <link:roleRef xlink:type="simple" xlink:href="pten-20200604.xsd#TemplateLink" roleURI="http://www.patenergy.com/20200604/role/TemplateLink" />
  <link:roleRef roleURI="http://www.patenergy.com/20200604/taxonomy/role/DocumentDocumentAndEntityInformation" xlink:href="pten-20200604.xsd#Role_DocumentDocumentAndEntityInformation" xlink:type="simple" />
  <link:definitionLink xlink:type="extended" xlink:role="http://www.patenergy.com/20200604/taxonomy/role/DocumentDocumentAndEntityInformation">
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_NoTradingSymbolFlag" xlink:type="locator" xlink:label="dei_NoTradingSymbolFlag" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_SecurityExchangeName" xlink:type="locator" xlink:label="dei_SecurityExchangeName" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_TradingSymbol" xlink:type="locator" xlink:label="dei_TradingSymbol" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_Security12bTitle" xlink:type="locator" xlink:label="dei_Security12bTitle" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_PreCommencementIssuerTenderOffer" xlink:type="locator" xlink:label="dei_PreCommencementIssuerTenderOffer" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_PreCommencementTenderOffer" xlink:type="locator" xlink:label="dei_PreCommencementTenderOffer" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_SolicitingMaterial" xlink:type="locator" xlink:label="dei_SolicitingMaterial" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_WrittenCommunications" xlink:type="locator" xlink:label="dei_WrittenCommunications" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_LocalPhoneNumber" xlink:type="locator" xlink:label="dei_LocalPhoneNumber" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_CityAreaCode" xlink:type="locator" xlink:label="dei_CityAreaCode" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityAddressPostalZipCode" xlink:type="locator" xlink:label="dei_EntityAddressPostalZipCode" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityAddressStateOrProvince" xlink:type="locator" xlink:label="dei_EntityAddressStateOrProvince" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityAddressCityOrTown" xlink:type="locator" xlink:label="dei_EntityAddressCityOrTown" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityAddressAddressLine2" xlink:type="locator" xlink:label="dei_EntityAddressAddressLine2" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityAddressAddressLine1" xlink:type="locator" xlink:label="dei_EntityAddressAddressLine1" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityTaxIdentificationNumber" xlink:type="locator" xlink:label="dei_EntityTaxIdentificationNumber" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityIncorporationStateCountryCode" xlink:type="locator" xlink:label="dei_EntityIncorporationStateCountryCode" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityFileNumber" xlink:type="locator" xlink:label="dei_EntityFileNumber" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityEmergingGrowthCompany" xlink:type="locator" xlink:label="dei_EntityEmergingGrowthCompany" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityCentralIndexKey" xlink:type="locator" xlink:label="dei_EntityCentralIndexKey" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityRegistrantName" xlink:type="locator" xlink:label="dei_EntityRegistrantName" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_DocumentPeriodEndDate" xlink:type="locator" xlink:label="dei_DocumentPeriodEndDate" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_AmendmentFlag" xlink:type="locator" xlink:label="dei_AmendmentFlag" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_DocumentType" xlink:type="locator" xlink:label="dei_DocumentType" />
    <link:loc xlink:href="pten-20200604.xsd#pten_PreferredStockPurchaseRightsOneMember" xlink:type="locator" xlink:label="pten_PreferredStockPurchaseRightsOneMember" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockMember" xlink:type="locator" xlink:label="us-gaap_CommonStockMember" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:type="locator" xlink:label="us-gaap_ClassOfStockDomain" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:type="locator" xlink:label="us-gaap_ClassOfStockDomain_2" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:type="locator" xlink:label="us-gaap_StatementClassOfStockAxis" />
    <link:loc xlink:href="pten-20200604.xsd#pten_DocumentAndEntityInformationTable" xlink:type="locator" xlink:label="pten_DocumentAndEntityInformationTable" />
    <link:loc xlink:href="pten-20200604.xsd#pten_DocumentAndEntityInformationLineItems" xlink:type="locator" xlink:label="pten_DocumentAndEntityInformationLineItems" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="pten_DocumentAndEntityInformationLineItems" xlink:to="pten_DocumentAndEntityInformationTable" order="10010.00" priority="2" use="optional" xbrldt:contextElement="segment" xbrldt:closed="true" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="pten_DocumentAndEntityInformationTable" xlink:to="us-gaap_StatementClassOfStockAxis" order="10040.00" priority="2" use="optional" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="us-gaap_StatementClassOfStockAxis" xlink:to="us-gaap_ClassOfStockDomain_2" order="10050.00" priority="2" use="optional" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="us-gaap_StatementClassOfStockAxis" xlink:to="us-gaap_ClassOfStockDomain" order="10070.00" priority="2" use="optional" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_ClassOfStockDomain" xlink:to="us-gaap_CommonStockMember" order="10090.00" priority="2" use="optional" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="us-gaap_ClassOfStockDomain" xlink:to="pten_PreferredStockPurchaseRightsOneMember" order="10150.00" priority="2" use="optional" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="pten_DocumentAndEntityInformationLineItems" xlink:to="dei_DocumentType" order="10220.00" priority="2" use="optional" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="pten_DocumentAndEntityInformationLineItems" xlink:to="dei_AmendmentFlag" order="10240.00" priority="2" use="optional" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="pten_DocumentAndEntityInformationLineItems" xlink:to="dei_DocumentPeriodEndDate" order="10260.00" priority="2" use="optional" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="pten_DocumentAndEntityInformationLineItems" xlink:to="dei_EntityRegistrantName" order="10280.00" priority="2" use="optional" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="pten_DocumentAndEntityInformationLineItems" xlink:to="dei_EntityCentralIndexKey" order="10300.00" priority="2" use="optional" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="pten_DocumentAndEntityInformationLineItems" xlink:to="dei_EntityEmergingGrowthCompany" order="10320.00" priority="2" use="optional" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="pten_DocumentAndEntityInformationLineItems" xlink:to="dei_EntityFileNumber" order="10340.00" priority="2" use="optional" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="pten_DocumentAndEntityInformationLineItems" xlink:to="dei_EntityIncorporationStateCountryCode" order="10360.00" priority="2" use="optional" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="pten_DocumentAndEntityInformationLineItems" xlink:to="dei_EntityTaxIdentificationNumber" order="10380.00" priority="2" use="optional" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="pten_DocumentAndEntityInformationLineItems" xlink:to="dei_EntityAddressAddressLine1" order="10400.00" priority="2" use="optional" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="pten_DocumentAndEntityInformationLineItems" xlink:to="dei_EntityAddressAddressLine2" order="10420.00" priority="2" use="optional" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="pten_DocumentAndEntityInformationLineItems" xlink:to="dei_EntityAddressCityOrTown" order="10440.00" priority="2" use="optional" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="pten_DocumentAndEntityInformationLineItems" xlink:to="dei_EntityAddressStateOrProvince" order="10460.00" priority="2" use="optional" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="pten_DocumentAndEntityInformationLineItems" xlink:to="dei_EntityAddressPostalZipCode" order="10480.00" priority="2" use="optional" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="pten_DocumentAndEntityInformationLineItems" xlink:to="dei_CityAreaCode" order="10500.00" priority="2" use="optional" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="pten_DocumentAndEntityInformationLineItems" xlink:to="dei_LocalPhoneNumber" order="10520.00" priority="2" use="optional" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="pten_DocumentAndEntityInformationLineItems" xlink:to="dei_WrittenCommunications" order="10540.00" priority="2" use="optional" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="pten_DocumentAndEntityInformationLineItems" xlink:to="dei_SolicitingMaterial" order="10560.00" priority="2" use="optional" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="pten_DocumentAndEntityInformationLineItems" xlink:to="dei_PreCommencementTenderOffer" order="10580.00" priority="2" use="optional" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="pten_DocumentAndEntityInformationLineItems" xlink:to="dei_PreCommencementIssuerTenderOffer" order="10600.00" priority="2" use="optional" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="pten_DocumentAndEntityInformationLineItems" xlink:to="dei_Security12bTitle" order="10620.00" priority="2" use="optional" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="pten_DocumentAndEntityInformationLineItems" xlink:to="dei_TradingSymbol" order="10640.00" priority="2" use="optional" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="pten_DocumentAndEntityInformationLineItems" xlink:to="dei_SecurityExchangeName" order="10660.00" priority="2" use="optional" />
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="pten_DocumentAndEntityInformationLineItems" xlink:to="dei_NoTradingSymbolFlag" order="10700.00" priority="2" use="optional" />
  </link:definitionLink>
</link:linkbase>
</XBRL>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-101.LAB
<SEQUENCE>4
<FILENAME>pten-20200604_lab.xml
<DESCRIPTION>XBRL TAXONOMY EXTENSION LABEL LINKBASE
<TEXT>
<XBRL>
<?xml version="1.0" encoding="us-ascii" standalone="yes"?>
<!-- DFIN ActiveDisclosure(SM) XBRL Linkbase Document - http://www.dfinsolutions.com/ -->
<!-- Creation Date      : 2020-05-29T20:14:00.0741614+00:00 -->
<!-- Version            : 5.0.1.385 -->
<!-- Package ID         : 67d537a6e9bc4e0e83afbecb0cfcdcff -->
<!-- Copyright (c) 2020 Donnelley Financial Solutions, Inc. All Rights Reserved. -->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedLabel" xlink:type="simple" />
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedNetLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedNetLabel" xlink:type="simple" />
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedPeriodEndLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedPeriodEndLabel" xlink:type="simple" />
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedPeriodStartLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedPeriodStartLabel" xlink:type="simple" />
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedTerseLabel" xlink:type="simple" />
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedTotalLabel" xlink:type="simple" />
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/netLabel" xlink:href="http://www.xbrl.org/lrr/role/net-2009-12-16.xsd#netLabel" xlink:type="simple" />
  <link:roleRef roleURI="http://fasb.org/us-gaap/role/label/axisDefault" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-roles-2019-01-31.xsd#axisDefault" xlink:type="simple" />
  <link:labelLink xlink:role="http://www.xbrl.org/2003/role/link" xlink:type="extended">
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityCentralIndexKey" xlink:type="locator" xlink:label="dei_EntityCentralIndexKey" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityCentralIndexKey_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Central Index Key</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityCentralIndexKey" xlink:to="dei_EntityCentralIndexKey_lbl" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_CoverAbstract" xlink:type="locator" xlink:label="dei_CoverAbstract" />
    <link:label xml:lang="en-US" xlink:label="dei_CoverAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Cover [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_CoverAbstract" xlink:to="dei_CoverAbstract_lbl" />
    <link:loc xlink:href="pten-20200604.xsd#pten_DocumentAndEntityInformationLineItems" xlink:type="locator" xlink:label="pten_DocumentAndEntityInformationLineItems" />
    <link:label xml:lang="en-US" xlink:label="pten_DocumentAndEntityInformationLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Document and entity information.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_DocumentAndEntityInformationLineItems" xlink:to="pten_DocumentAndEntityInformationLineItems_lbl" />
    <link:loc xlink:href="pten-20200604.xsd#pten_DocumentAndEntityInformationTable" xlink:type="locator" xlink:label="pten_DocumentAndEntityInformationTable" />
    <link:label xml:lang="en-US" xlink:label="pten_DocumentAndEntityInformationTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Document and entity information table.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_DocumentAndEntityInformationTable" xlink:to="pten_DocumentAndEntityInformationTable_lbl" />
    <link:label xml:lang="en-US" xlink:label="pten_DocumentAndEntityInformationTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document And Entity Information [Table]</link:label>
    <link:label xml:lang="en-US" xlink:label="pten_DocumentAndEntityInformationTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Document And Entity Information [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:type="locator" xlink:label="us-gaap_StatementClassOfStockAxis" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StatementClassOfStockAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Class of Stock</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementClassOfStockAxis" xlink:to="us-gaap_StatementClassOfStockAxis_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_StatementClassOfStockAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Statement Class Of Stock [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:type="locator" xlink:label="us-gaap_ClassOfStockDomain" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ClassOfStockDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Class of Stock</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ClassOfStockDomain" xlink:to="us-gaap_ClassOfStockDomain_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_ClassOfStockDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Class Of Stock [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockMember" xlink:type="locator" xlink:label="us-gaap_CommonStockMember" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CommonStockMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common Stock</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockMember" xlink:to="us-gaap_CommonStockMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="us-gaap_CommonStockMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock [Member]</link:label>
    <link:loc xlink:href="pten-20200604.xsd#pten_PreferredStockPurchaseRightsOneMember" xlink:type="locator" xlink:label="pten_PreferredStockPurchaseRightsOneMember" />
    <link:label xml:lang="en-US" xlink:label="pten_PreferredStockPurchaseRightsOneMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Preferred stock purchase rights one.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_PreferredStockPurchaseRightsOneMember" xlink:to="pten_PreferredStockPurchaseRightsOneMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="pten_PreferredStockPurchaseRightsOneMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Preferred Stock Purchase Rights</link:label>
    <link:label xml:lang="en-US" xlink:label="pten_PreferredStockPurchaseRightsOneMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Preferred Stock Purchase Rights One [Member]</link:label>
    <link:label xml:lang="en-US" xlink:label="pten_DocumentAndEntityInformationLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document And Entity Information [Line Items]</link:label>
    <link:label xml:lang="en-US" xlink:label="pten_DocumentAndEntityInformationLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Document And Entity Information [Line Items]</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_DocumentType" xlink:type="locator" xlink:label="dei_DocumentType" />
    <link:label xml:lang="en-US" xlink:label="dei_DocumentType_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Type</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentType" xlink:to="dei_DocumentType_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_DocumentType_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Document Type</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_AmendmentFlag" xlink:type="locator" xlink:label="dei_AmendmentFlag" />
    <link:label xml:lang="en-US" xlink:label="dei_AmendmentFlag_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amendment Flag</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_AmendmentFlag" xlink:to="dei_AmendmentFlag_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_AmendmentFlag_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Amendment Flag</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_DocumentPeriodEndDate" xlink:type="locator" xlink:label="dei_DocumentPeriodEndDate" />
    <link:label xml:lang="en-US" xlink:label="dei_DocumentPeriodEndDate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Period End Date</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentPeriodEndDate" xlink:to="dei_DocumentPeriodEndDate_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_DocumentPeriodEndDate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Document Period End Date</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityRegistrantName" xlink:type="locator" xlink:label="dei_EntityRegistrantName" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityRegistrantName_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Registrant Name</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityRegistrantName" xlink:to="dei_EntityRegistrantName_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityRegistrantName_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Registrant Name</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_EntityCentralIndexKey_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Central Index Key</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityEmergingGrowthCompany" xlink:type="locator" xlink:label="dei_EntityEmergingGrowthCompany" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityEmergingGrowthCompany_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Emerging Growth Company</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityEmergingGrowthCompany" xlink:to="dei_EntityEmergingGrowthCompany_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityEmergingGrowthCompany_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Emerging Growth Company</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityFileNumber" xlink:type="locator" xlink:label="dei_EntityFileNumber" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityFileNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity File Number</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityFileNumber" xlink:to="dei_EntityFileNumber_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityFileNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity File Number</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityIncorporationStateCountryCode" xlink:type="locator" xlink:label="dei_EntityIncorporationStateCountryCode" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityIncorporationStateCountryCode_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Incorporation State Country Code</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityIncorporationStateCountryCode" xlink:to="dei_EntityIncorporationStateCountryCode_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityIncorporationStateCountryCode_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Incorporation State Country Code</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityTaxIdentificationNumber" xlink:type="locator" xlink:label="dei_EntityTaxIdentificationNumber" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityTaxIdentificationNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Tax Identification Number</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityTaxIdentificationNumber" xlink:to="dei_EntityTaxIdentificationNumber_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityTaxIdentificationNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Tax Identification Number</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityAddressAddressLine1" xlink:type="locator" xlink:label="dei_EntityAddressAddressLine1" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressAddressLine1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address Address Line1</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityAddressAddressLine1" xlink:to="dei_EntityAddressAddressLine1_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressAddressLine1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address Address Line1</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityAddressAddressLine2" xlink:type="locator" xlink:label="dei_EntityAddressAddressLine2" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressAddressLine2_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address, Address Line Two</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityAddressAddressLine2" xlink:to="dei_EntityAddressAddressLine2_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressAddressLine2_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address Address Line2</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityAddressCityOrTown" xlink:type="locator" xlink:label="dei_EntityAddressCityOrTown" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressCityOrTown_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address City Or Town</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityAddressCityOrTown" xlink:to="dei_EntityAddressCityOrTown_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressCityOrTown_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address City Or Town</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityAddressStateOrProvince" xlink:type="locator" xlink:label="dei_EntityAddressStateOrProvince" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressStateOrProvince_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address State Or Province</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityAddressStateOrProvince" xlink:to="dei_EntityAddressStateOrProvince_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressStateOrProvince_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address State Or Province</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityAddressPostalZipCode" xlink:type="locator" xlink:label="dei_EntityAddressPostalZipCode" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressPostalZipCode_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address Postal Zip Code</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityAddressPostalZipCode" xlink:to="dei_EntityAddressPostalZipCode_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressPostalZipCode_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address Postal Zip Code</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_CityAreaCode" xlink:type="locator" xlink:label="dei_CityAreaCode" />
    <link:label xml:lang="en-US" xlink:label="dei_CityAreaCode_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">City Area Code</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_CityAreaCode" xlink:to="dei_CityAreaCode_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_CityAreaCode_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">City Area Code</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_LocalPhoneNumber" xlink:type="locator" xlink:label="dei_LocalPhoneNumber" />
    <link:label xml:lang="en-US" xlink:label="dei_LocalPhoneNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Local Phone Number</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_LocalPhoneNumber" xlink:to="dei_LocalPhoneNumber_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_LocalPhoneNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Local Phone Number</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_WrittenCommunications" xlink:type="locator" xlink:label="dei_WrittenCommunications" />
    <link:label xml:lang="en-US" xlink:label="dei_WrittenCommunications_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Written Communications</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_WrittenCommunications" xlink:to="dei_WrittenCommunications_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_WrittenCommunications_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Written Communications</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_SolicitingMaterial" xlink:type="locator" xlink:label="dei_SolicitingMaterial" />
    <link:label xml:lang="en-US" xlink:label="dei_SolicitingMaterial_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Soliciting Material</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_SolicitingMaterial" xlink:to="dei_SolicitingMaterial_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_SolicitingMaterial_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Soliciting Material</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_PreCommencementTenderOffer" xlink:type="locator" xlink:label="dei_PreCommencementTenderOffer" />
    <link:label xml:lang="en-US" xlink:label="dei_PreCommencementTenderOffer_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Pre-commencement Tender Offer</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_PreCommencementTenderOffer" xlink:to="dei_PreCommencementTenderOffer_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_PreCommencementTenderOffer_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Pre Commencement Tender Offer</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_PreCommencementIssuerTenderOffer" xlink:type="locator" xlink:label="dei_PreCommencementIssuerTenderOffer" />
    <link:label xml:lang="en-US" xlink:label="dei_PreCommencementIssuerTenderOffer_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Pre-commencement Issuer Tender Offer</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_PreCommencementIssuerTenderOffer" xlink:to="dei_PreCommencementIssuerTenderOffer_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_PreCommencementIssuerTenderOffer_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Pre Commencement Issuer Tender Offer</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_Security12bTitle" xlink:type="locator" xlink:label="dei_Security12bTitle" />
    <link:label xml:lang="en-US" xlink:label="dei_Security12bTitle_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Title of 12(b) Security</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_Security12bTitle" xlink:to="dei_Security12bTitle_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_Security12bTitle_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Security12b Title</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_TradingSymbol" xlink:type="locator" xlink:label="dei_TradingSymbol" />
    <link:label xml:lang="en-US" xlink:label="dei_TradingSymbol_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Trading Symbol</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_TradingSymbol" xlink:to="dei_TradingSymbol_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_TradingSymbol_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Trading Symbol</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_SecurityExchangeName" xlink:type="locator" xlink:label="dei_SecurityExchangeName" />
    <link:label xml:lang="en-US" xlink:label="dei_SecurityExchangeName_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Security Exchange Name</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_SecurityExchangeName" xlink:to="dei_SecurityExchangeName_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_SecurityExchangeName_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Security Exchange Name</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_NoTradingSymbolFlag" xlink:type="locator" xlink:label="dei_NoTradingSymbolFlag" />
    <link:label xml:lang="en-US" xlink:label="dei_NoTradingSymbolFlag_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">No Trading Symbol Flag</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_NoTradingSymbolFlag" xlink:to="dei_NoTradingSymbolFlag_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_NoTradingSymbolFlag_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">No Trading Symbol Flag</link:label>
  </link:labelLink>
</link:linkbase>
</XBRL>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-101.PRE
<SEQUENCE>5
<FILENAME>pten-20200604_pre.xml
<DESCRIPTION>XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE
<TEXT>
<XBRL>
<?xml version="1.0" encoding="us-ascii" standalone="yes"?>
<!-- DFIN ActiveDisclosure(SM) XBRL Linkbase Document - http://www.dfinsolutions.com/ -->
<!-- Creation Date      : 2020-05-29T20:14:00.0741614+00:00 -->
<!-- Version            : 5.0.1.385 -->
<!-- Package ID         : 67d537a6e9bc4e0e83afbecb0cfcdcff -->
<!-- Copyright (c) 2020 Donnelley Financial Solutions, Inc. All Rights Reserved. -->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:roleRef roleURI="http://www.patenergy.com/20200604/role/TemplateLink" xlink:href="pten-20200604.xsd#TemplateLink" xlink:type="simple" />
  <link:roleRef roleURI="http://www.patenergy.com/20200604/taxonomy/role/DocumentDocumentAndEntityInformation" xlink:href="pten-20200604.xsd#Role_DocumentDocumentAndEntityInformation" xlink:type="simple" />
  <link:presentationLink xlink:type="extended" xlink:role="http://www.patenergy.com/20200604/taxonomy/role/DocumentDocumentAndEntityInformation">
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_NoTradingSymbolFlag" xlink:type="locator" xlink:label="dei_NoTradingSymbolFlag" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_SecurityExchangeName" xlink:type="locator" xlink:label="dei_SecurityExchangeName" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_TradingSymbol" xlink:type="locator" xlink:label="dei_TradingSymbol" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_Security12bTitle" xlink:type="locator" xlink:label="dei_Security12bTitle" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_PreCommencementIssuerTenderOffer" xlink:type="locator" xlink:label="dei_PreCommencementIssuerTenderOffer" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_PreCommencementTenderOffer" xlink:type="locator" xlink:label="dei_PreCommencementTenderOffer" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_SolicitingMaterial" xlink:type="locator" xlink:label="dei_SolicitingMaterial" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_WrittenCommunications" xlink:type="locator" xlink:label="dei_WrittenCommunications" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_LocalPhoneNumber" xlink:type="locator" xlink:label="dei_LocalPhoneNumber" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_CityAreaCode" xlink:type="locator" xlink:label="dei_CityAreaCode" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityAddressPostalZipCode" xlink:type="locator" xlink:label="dei_EntityAddressPostalZipCode" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityAddressStateOrProvince" xlink:type="locator" xlink:label="dei_EntityAddressStateOrProvince" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityAddressCityOrTown" xlink:type="locator" xlink:label="dei_EntityAddressCityOrTown" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityAddressAddressLine2" xlink:type="locator" xlink:label="dei_EntityAddressAddressLine2" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityAddressAddressLine1" xlink:type="locator" xlink:label="dei_EntityAddressAddressLine1" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityTaxIdentificationNumber" xlink:type="locator" xlink:label="dei_EntityTaxIdentificationNumber" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityIncorporationStateCountryCode" xlink:type="locator" xlink:label="dei_EntityIncorporationStateCountryCode" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityFileNumber" xlink:type="locator" xlink:label="dei_EntityFileNumber" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityEmergingGrowthCompany" xlink:type="locator" xlink:label="dei_EntityEmergingGrowthCompany" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityCentralIndexKey" xlink:type="locator" xlink:label="dei_EntityCentralIndexKey" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityRegistrantName" xlink:type="locator" xlink:label="dei_EntityRegistrantName" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_DocumentPeriodEndDate" xlink:type="locator" xlink:label="dei_DocumentPeriodEndDate" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_AmendmentFlag" xlink:type="locator" xlink:label="dei_AmendmentFlag" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_DocumentType" xlink:type="locator" xlink:label="dei_DocumentType" />
    <link:loc xlink:href="pten-20200604.xsd#pten_DocumentAndEntityInformationLineItems" xlink:type="locator" xlink:label="pten_DocumentAndEntityInformationLineItems" />
    <link:loc xlink:href="pten-20200604.xsd#pten_PreferredStockPurchaseRightsOneMember" xlink:type="locator" xlink:label="pten_PreferredStockPurchaseRightsOneMember" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockMember" xlink:type="locator" xlink:label="us-gaap_CommonStockMember" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:type="locator" xlink:label="us-gaap_ClassOfStockDomain" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:type="locator" xlink:label="us-gaap_StatementClassOfStockAxis" />
    <link:loc xlink:href="pten-20200604.xsd#pten_DocumentAndEntityInformationTable" xlink:type="locator" xlink:label="pten_DocumentAndEntityInformationTable" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_CoverAbstract" xlink:type="locator" xlink:label="dei_CoverAbstract" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="pten_DocumentAndEntityInformationTable" order="10020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="pten_DocumentAndEntityInformationTable" xlink:to="us-gaap_StatementClassOfStockAxis" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_StatementClassOfStockAxis" xlink:to="us-gaap_ClassOfStockDomain" order="10060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ClassOfStockDomain" xlink:to="us-gaap_CommonStockMember" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ClassOfStockDomain" xlink:to="pten_PreferredStockPurchaseRightsOneMember" order="10140.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="pten_DocumentAndEntityInformationTable" xlink:to="pten_DocumentAndEntityInformationLineItems" order="10200.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="pten_DocumentAndEntityInformationLineItems" xlink:to="dei_DocumentType" order="10210.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="pten_DocumentAndEntityInformationLineItems" xlink:to="dei_AmendmentFlag" order="10230.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="pten_DocumentAndEntityInformationLineItems" xlink:to="dei_DocumentPeriodEndDate" order="10250.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="pten_DocumentAndEntityInformationLineItems" xlink:to="dei_EntityRegistrantName" order="10270.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="pten_DocumentAndEntityInformationLineItems" xlink:to="dei_EntityCentralIndexKey" order="10290.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="pten_DocumentAndEntityInformationLineItems" xlink:to="dei_EntityEmergingGrowthCompany" order="10310.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="pten_DocumentAndEntityInformationLineItems" xlink:to="dei_EntityFileNumber" order="10330.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="pten_DocumentAndEntityInformationLineItems" xlink:to="dei_EntityIncorporationStateCountryCode" order="10350.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="pten_DocumentAndEntityInformationLineItems" xlink:to="dei_EntityTaxIdentificationNumber" order="10370.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="pten_DocumentAndEntityInformationLineItems" xlink:to="dei_EntityAddressAddressLine1" order="10390.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="pten_DocumentAndEntityInformationLineItems" xlink:to="dei_EntityAddressAddressLine2" order="10410.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="pten_DocumentAndEntityInformationLineItems" xlink:to="dei_EntityAddressCityOrTown" order="10430.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="pten_DocumentAndEntityInformationLineItems" xlink:to="dei_EntityAddressStateOrProvince" order="10450.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="pten_DocumentAndEntityInformationLineItems" xlink:to="dei_EntityAddressPostalZipCode" order="10470.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="pten_DocumentAndEntityInformationLineItems" xlink:to="dei_CityAreaCode" order="10490.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="pten_DocumentAndEntityInformationLineItems" xlink:to="dei_LocalPhoneNumber" order="10510.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="pten_DocumentAndEntityInformationLineItems" xlink:to="dei_WrittenCommunications" order="10530.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="pten_DocumentAndEntityInformationLineItems" xlink:to="dei_SolicitingMaterial" order="10550.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="pten_DocumentAndEntityInformationLineItems" xlink:to="dei_PreCommencementTenderOffer" order="10570.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="pten_DocumentAndEntityInformationLineItems" xlink:to="dei_PreCommencementIssuerTenderOffer" order="10590.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="pten_DocumentAndEntityInformationLineItems" xlink:to="dei_Security12bTitle" order="10610.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="pten_DocumentAndEntityInformationLineItems" xlink:to="dei_TradingSymbol" order="10630.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="pten_DocumentAndEntityInformationLineItems" xlink:to="dei_SecurityExchangeName" order="10650.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="pten_DocumentAndEntityInformationLineItems" xlink:to="dei_NoTradingSymbolFlag" order="10690.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
  </link:presentationLink>
</link:linkbase>
</XBRL>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>6
<FILENAME>report.css
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
/* Updated 2009-11-04 */
/* v2.2.0.24 */

/* DefRef Styles */
..report table.authRefData{
	background-color: #def;
	border: 2px solid #2F4497;
	font-size: 1em;
	position: absolute;
}

..report table.authRefData a {
	display: block;
	font-weight: bold;
}

..report table.authRefData p {
	margin-top: 0px;
}

..report table.authRefData .hide {
	background-color: #2F4497;
	padding: 1px 3px 0px 0px;
	text-align: right;
}

..report table.authRefData .hide a:hover {
	background-color: #2F4497;
}

..report table.authRefData .body {
	height: 150px;
	overflow: auto;
	width: 400px;
}

..report table.authRefData table{
	font-size: 1em;
}

/* Report Styles */
..pl a, .pl a:visited {
	color: black;
	text-decoration: none;
}

/* table */
..report {
	background-color: white;
	border: 2px solid #acf;
	clear: both;
	color: black;
	font: normal 8pt Helvetica, Arial, san-serif;
	margin-bottom: 2em;
}

..report hr {
	border: 1px solid #acf;
}

/* Top labels */
..report th {
	background-color: #acf;
	color: black;
	font-weight: bold;
	text-align: center;
}

..report th.void	{
	background-color: transparent;
	color: #000000;
	font: bold 10pt Helvetica, Arial, san-serif;
	text-align: left;
}

..report .pl {
	text-align: left;
	vertical-align: top;
	white-space: normal;
	width: 200px;
	white-space: normal; /* word-wrap: break-word; */
}

..report td.pl a.a {
	cursor: pointer;
	display: block;
	width: 200px;
	overflow: hidden;
}

..report td.pl div.a {
	width: 200px;
}

..report td.pl a:hover {
	background-color: #ffc;
}

/* Header rows... */
..report tr.rh {
	background-color: #acf;
	color: black;
	font-weight: bold;
}

/* Calendars... */
..report .rc {
	background-color: #f0f0f0;
}

/* Even rows... */
..report .re, .report .reu {
	background-color: #def;
}

..report .reu td {
	border-bottom: 1px solid black;
}

/* Odd rows... */
..report .ro, .report .rou {
	background-color: white;
}

..report .rou td {
	border-bottom: 1px solid black;
}

..report .rou table td, .report .reu table td {
	border-bottom: 0px solid black;
}

/* styles for footnote marker */
..report .fn {
	white-space: nowrap;
}

/* styles for numeric types */
..report .num, .report .nump {
	text-align: right;
	white-space: nowrap;
}

..report .nump {
	padding-left: 2em;
}

..report .nump {
	padding: 0px 0.4em 0px 2em;
}

/* styles for text types */
..report .text {
	text-align: left;
	white-space: normal;
}

..report .text .big {
	margin-bottom: 1em;
	width: 17em;
}

..report .text .more {
	display: none;
}

..report .text .note {
	font-style: italic;
	font-weight: bold;
}

..report .text .small {
	width: 10em;
}

..report sup {
	font-style: italic;
}

..report .outerFootnotes {
	font-size: 1em;
}
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>ZIP
<SEQUENCE>7
<FILENAME>0001564590-20-028390-xbrl.zip
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
begin 644 0001564590-20-028390-xbrl.zip
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M>-!T.]Y!QW4;[M&!=^@=_.JZ^MN*@[_G+-#*3P>U&V[#:[0^ME<JWF#R@$>
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M:*RGRPGFLW(X=[BH#/*)[H 2L[Y>'DW_A))@MXPK@WD+(ZIT6SPJLT')MZT
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M.%7"JPK[:5Z9C\@EN%XA9GVR]FB!V@?]+.WJ&_U//U_Z^3]02P,$%     @
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MC>*]H?7GE%,8+0B9@"6EGW;.1UF2>($(=&J^]$(OZ3<*>Z#PQ<NQ-1=_&]\
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52P4&      4 !0!* 0  W#$

end
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>8
<FILENAME>FilingSummary.xml
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<XML>
<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.20.1</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>3</ContextCount>
  <ElementCount>95</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>false</FootnotesReported>
  <SegmentCount>2</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>0</UnitCount>
  <MyReports>
    <Report instance="pten-8k_20200604.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>100000 - Document - Document and Entity Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.patenergy.com/20200604/taxonomy/role/DocumentDocumentAndEntityInformation</Role>
      <ShortName>Document and Entity Information</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <InputFiles>
    <File doctype="8-K" original="pten-8k_20200604.htm">pten-8k_20200604.htm</File>
    <File>pten-20200604.xsd</File>
    <File>pten-20200604_def.xml</File>
    <File>pten-20200604_lab.xml</File>
    <File>pten-20200604_pre.xml</File>
  </InputFiles>
  <SupplementalFiles/>
  <BaseTaxonomies>
    <BaseTaxonomy>http://xbrl.sec.gov/dei/2019-01-31</BaseTaxonomy>
    <BaseTaxonomy>http://fasb.org/us-gaap/2019-01-31</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>false</HasCalculationLinkbase>
</FilingSummary>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EXCEL
<SEQUENCE>9
<FILENAME>Financial_Report.xlsx
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
begin 644 Financial_Report.xlsx
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MMWF\81AU8\K(XK%T-8943OTJDH\ Q:X831F:3LTXXFBD(3^ G/,6+V2?$9/
M-(X'P"J8%EQV^3O8:W7..7AKQ%/25V^9"CGIYFHQ*/B76_..7+8\#?NW_+""
MWTG] E!+ P04    "  8@,10[V0 8NX    K @  $0   &1O8U!R;W!S+V-O
M<F4N>&ULS9+/:L,P#(=?9?B>R$E&#B;-96.G%@8K;.QF;+4UB_]@:R1]^R5>
MFS*V!]C1TL^?/H$Z%83R$9^C#QC)8+J;[."24&'#3D1! "1U0BM3.2?<W#SX
M:"7-SWB$(-6'/"+4G+=@D:26)&$!%F$ELK[32JB(DGR\X+5:\>$S#AFF%>"
M%ATEJ,H*6+],#.=IZ. &6&"$T:;O NJ5F*M_8G,'V"4Y);.FQG$LQR;GYATJ
M>-MM7_*ZA7&)I%,X_TI&T#G@AETGOS8/C_LGUM>\Y@5O"WZ_KUK!N6CJ]\7U
MA]]-V'IM#N8?&U\%^PY^W47_!5!+ P04    "  8@,10F5R<(Q &  "<)P
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ML((.*^Z0>0Y ,L,6(L4TI3S#W.<):!8!EP"S@F=8^BY LPJX8' %L0S$O@U
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M'E\Q4??TEUG/7H(PK8>_R43]-<#JUV5?4$L#!!0    ( !B Q% +C]@#(0$
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M\@M02P$"% ,4    "  8@,10'R// \     3 @  "P              @ $
M    7W)E;',O+G)E;'-02P$"% ,4    "  8@,10)^B'#H(   "Q    $
M            @ 'I    9&]C4')O<',O87!P+GAM;%!+ 0(4 Q0    ( !B
MQ%#O9 !B[@   "L"   1              "  9D!  !D;V-0<F]P<R]C;W)E
M+GAM;%!+ 0(4 Q0    ( !B Q%"97)PC$ 8  )PG   3              "
M ;8"  !X;"]T:&5M92]T:&5M93$N>&UL4$L! A0#%     @ &(#$4")$P,;S
M @  ,0X  !@              ( !]P@  'AL+W=O<FMS:&5E=',O<VAE970Q
M+GAM;%!+ 0(4 Q0    ( !B Q%!(';:3B (  -X&   4              "
M 2 ,  !X;"]S:&%R9613=')I;F=S+GAM;%!+ 0(4 Q0    ( !B Q%"ZH3F*
MUP$  #(&   -              "  =H.  !X;"]S='EL97,N>&UL4$L! A0#
M%     @ &(#$4!9M(W]# 0  / (   \              ( !W!   'AL+W=O
M<FMB;V]K+GAM;%!+ 0(4 Q0    ( !B Q%#_P"8(O0   (4"   :
M      "  4P2  !X;"]?<F5L<R]W;W)K8F]O:RYX;6PN<F5L<U!+ 0(4 Q0
M   ( !B Q% +C]@#(0$  %<$   3              "  4$3  !;0V]N=&5N
B=%]4>7!E<UTN>&UL4$L%!@     *  H @ (  ),4      $!

end
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>11
<FILENAME>pten-8k_20200604_htm.xml
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<XML>
<?xml version="1.0" encoding="utf-8"?>
<xbrl
  xmlns="http://www.xbrl.org/2003/instance"
  xmlns:dei="http://xbrl.sec.gov/dei/2019-01-31"
  xmlns:link="http://www.xbrl.org/2003/linkbase"
  xmlns:pten="http://www.patenergy.com/20200604"
  xmlns:us-gaap="http://fasb.org/us-gaap/2019-01-31"
  xmlns:xbrldi="http://xbrl.org/2006/xbrldi"
  xmlns:xlink="http://www.w3.org/1999/xlink">
    <link:schemaRef xlink:href="pten-20200604.xsd" xlink:type="simple"/>
    <context id="C_0000889900_20200604_20200604">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000889900</identifier>
        </entity>
        <period>
            <startDate>2020-06-04</startDate>
            <endDate>2020-06-04</endDate>
        </period>
    </context>
    <context id="C_0000889900_us-gaapStatementClassOfStockAxis_us-gaapCommonStockMember_20200604_20200604">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000889900</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementClassOfStockAxis">us-gaap:CommonStockMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2020-06-04</startDate>
            <endDate>2020-06-04</endDate>
        </period>
    </context>
    <context id="C_0000889900_us-gaapStatementClassOfStockAxis_ptenPreferredStockPurchaseRightsOneMember_20200604_20200604">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000889900</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementClassOfStockAxis">pten:PreferredStockPurchaseRightsOneMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2020-06-04</startDate>
            <endDate>2020-06-04</endDate>
        </period>
    </context>
    <dei:AmendmentFlag contextRef="C_0000889900_20200604_20200604" id="F_000001">false</dei:AmendmentFlag>
    <dei:EntityCentralIndexKey contextRef="C_0000889900_20200604_20200604" id="F_000004">0000889900</dei:EntityCentralIndexKey>
    <dei:NoTradingSymbolFlag
      contextRef="C_0000889900_us-gaapStatementClassOfStockAxis_ptenPreferredStockPurchaseRightsOneMember_20200604_20200604"
      id="F_000024">true</dei:NoTradingSymbolFlag>
    <dei:DocumentType contextRef="C_0000889900_20200604_20200604" id="F_000000">8-K</dei:DocumentType>
    <dei:DocumentPeriodEndDate contextRef="C_0000889900_20200604_20200604" id="F_000002">2020-06-04</dei:DocumentPeriodEndDate>
    <dei:EntityRegistrantName contextRef="C_0000889900_20200604_20200604" id="F_000003">Patterson-UTI Energy, Inc.</dei:EntityRegistrantName>
    <dei:EntityIncorporationStateCountryCode contextRef="C_0000889900_20200604_20200604" id="F_000007">DE</dei:EntityIncorporationStateCountryCode>
    <dei:EntityFileNumber contextRef="C_0000889900_20200604_20200604" id="F_000006">1-39270</dei:EntityFileNumber>
    <dei:EntityTaxIdentificationNumber contextRef="C_0000889900_20200604_20200604" id="F_000008">75-2504748</dei:EntityTaxIdentificationNumber>
    <dei:EntityAddressAddressLine1 contextRef="C_0000889900_20200604_20200604" id="F_000009">10713 W. Sam Houston Pkwy N</dei:EntityAddressAddressLine1>
    <dei:EntityAddressAddressLine2 contextRef="C_0000889900_20200604_20200604" id="F_000010">Suite 800</dei:EntityAddressAddressLine2>
    <dei:EntityAddressCityOrTown contextRef="C_0000889900_20200604_20200604" id="F_000011">Houston</dei:EntityAddressCityOrTown>
    <dei:EntityAddressStateOrProvince contextRef="C_0000889900_20200604_20200604" id="F_000012">TX</dei:EntityAddressStateOrProvince>
    <dei:EntityAddressPostalZipCode contextRef="C_0000889900_20200604_20200604" id="F_000013">77064</dei:EntityAddressPostalZipCode>
    <dei:CityAreaCode contextRef="C_0000889900_20200604_20200604" id="F_000014">281</dei:CityAreaCode>
    <dei:LocalPhoneNumber contextRef="C_0000889900_20200604_20200604" id="F_000015">765-7100</dei:LocalPhoneNumber>
    <dei:WrittenCommunications contextRef="C_0000889900_20200604_20200604" id="F_000016">false</dei:WrittenCommunications>
    <dei:SolicitingMaterial contextRef="C_0000889900_20200604_20200604" id="F_000017">false</dei:SolicitingMaterial>
    <dei:PreCommencementTenderOffer contextRef="C_0000889900_20200604_20200604" id="F_000018">false</dei:PreCommencementTenderOffer>
    <dei:PreCommencementIssuerTenderOffer contextRef="C_0000889900_20200604_20200604" id="F_000019">false</dei:PreCommencementIssuerTenderOffer>
    <dei:Security12bTitle
      contextRef="C_0000889900_us-gaapStatementClassOfStockAxis_us-gaapCommonStockMember_20200604_20200604"
      id="F_000020">Common Stock, $0.01 Par Value</dei:Security12bTitle>
    <dei:TradingSymbol
      contextRef="C_0000889900_us-gaapStatementClassOfStockAxis_us-gaapCommonStockMember_20200604_20200604"
      id="F_000021">PTEN</dei:TradingSymbol>
    <dei:SecurityExchangeName
      contextRef="C_0000889900_us-gaapStatementClassOfStockAxis_us-gaapCommonStockMember_20200604_20200604"
      id="F_000022">NASDAQ</dei:SecurityExchangeName>
    <dei:Security12bTitle
      contextRef="C_0000889900_us-gaapStatementClassOfStockAxis_ptenPreferredStockPurchaseRightsOneMember_20200604_20200604"
      id="F_000023">Preferred Stock Purchase Rights</dei:Security12bTitle>
    <dei:SecurityExchangeName
      contextRef="C_0000889900_us-gaapStatementClassOfStockAxis_ptenPreferredStockPurchaseRightsOneMember_20200604_20200604"
      id="F_000025">NASDAQ</dei:SecurityExchangeName>
    <dei:EntityEmergingGrowthCompany contextRef="C_0000889900_20200604_20200604" id="F_000005">false</dei:EntityEmergingGrowthCompany>
</xbrl>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>12
<FILENAME>Show.js
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
// Edgar(tm) Renderer was created by staff of the U.S. Securities and Exchange Commission.  Data and content created by government employees within the scope of their employment are not subject to domestic copyright protection. 17 U.S.C. 105.
var Show={};Show.LastAR=null,Show.showAR=function(a,r,w){if(Show.LastAR)Show.hideAR();var e=a;while(e&&e.nodeName!='TABLE')e=e.nextSibling;if(!e||e.nodeName!='TABLE'){var ref=((window)?w.document:document).getElementById(r);if(ref){e=ref.cloneNode(!0);
e.removeAttribute('id');a.parentNode.appendChild(e)}}
if(e)e.style.display='block';Show.LastAR=e};Show.hideAR=function(){Show.LastAR.style.display='none'};Show.toggleNext=function(a){var e=a;while(e.nodeName!='DIV')e=e.nextSibling;if(!e.style){}else if(!e.style.display){}else{var d,p_;if(e.style.display=='none'){d='block';p='-'}else{d='none';p='+'}
e.style.display=d;if(a.textContent){a.textContent=p+a.textContent.substring(1)}else{a.innerText=p+a.innerText.substring(1)}}}
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>JSON
<SEQUENCE>13
<FILENAME>MetaLinks.json
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
{
 "instance": {
  "pten-8k_20200604.htm": {
   "axisCustom": 0,
   "axisStandard": 1,
   "contextCount": 3,
   "dts": {
    "definitionLink": {
     "local": [
      "pten-20200604_def.xml"
     ],
     "remote": [
      "http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-eedm-def-2019-01-31.xml",
      "http://xbrl.fasb.org/srt/2019/elts/srt-eedm1-def-2019-01-31.xml"
     ]
    },
    "inline": {
     "local": [
      "pten-8k_20200604.htm"
     ]
    },
    "labelLink": {
     "local": [
      "pten-20200604_lab.xml"
     ],
     "remote": [
      "https://xbrl.sec.gov/dei/2019/dei-doc-2019-01-31.xml"
     ]
    },
    "presentationLink": {
     "local": [
      "pten-20200604_pre.xml"
     ]
    },
    "referenceLink": {
     "remote": [
      "https://xbrl.sec.gov/dei/2019/dei-ref-2019-01-31.xml"
     ]
    },
    "schema": {
     "local": [
      "pten-20200604.xsd"
     ],
     "remote": [
      "http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd",
      "http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd",
      "http://www.xbrl.org/2003/xl-2003-12-31.xsd",
      "http://www.xbrl.org/2003/xlink-2003-12-31.xsd",
      "http://www.xbrl.org/2005/xbrldt-2005.xsd",
      "https://xbrl.sec.gov/country/2017/country-2017-01-31.xsd",
      "http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd",
      "https://xbrl.sec.gov/currency/2019/currency-2019-01-31.xsd",
      "https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd",
      "http://www.xbrl.org/dtr/type/numeric-2009-12-16.xsd",
      "https://xbrl.sec.gov/exch/2019/exch-2019-01-31.xsd",
      "http://www.xbrl.org/lrr/arcrole/factExplanatory-2009-12-16.xsd",
      "http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd",
      "http://www.xbrl.org/lrr/role/net-2009-12-16.xsd",
      "https://xbrl.sec.gov/naics/2017/naics-2017-01-31.xsd",
      "https://xbrl.sec.gov/sic/2011/sic-2011-01-31.xsd",
      "http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd",
      "http://www.xbrl.org/2006/ref-2006-02-27.xsd",
      "http://xbrl.fasb.org/srt/2019/elts/srt-types-2019-01-31.xsd",
      "http://xbrl.fasb.org/srt/2019/elts/srt-roles-2019-01-31.xsd",
      "https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd",
      "http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd",
      "http://xbrl.fasb.org/us-gaap/2019/elts/us-roles-2019-01-31.xsd",
      "http://xbrl.fasb.org/us-gaap/2019/elts/us-types-2019-01-31.xsd",
      "http://www.xbrl.org/lrr/role/deprecated-2009-12-16.xsd"
     ]
    }
   },
   "elementCount": 31,
   "entityCount": 1,
   "hidden": {
    "http://xbrl.sec.gov/dei/2019-01-31": 3,
    "total": 3
   },
   "keyCustom": 0,
   "keyStandard": 95,
   "memberCustom": 1,
   "memberStandard": 1,
   "nsprefix": "pten",
   "nsuri": "http://www.patenergy.com/20200604",
   "report": {
    "R1": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "body",
       "html"
      ],
      "baseRef": "pten-8k_20200604.htm",
      "contextRef": "C_0000889900_20200604_20200604",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "dei:DocumentType",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "document",
     "isDefault": "true",
     "longName": "100000 - Document - Document and Entity Information",
     "role": "http://www.patenergy.com/20200604/taxonomy/role/DocumentDocumentAndEntityInformation",
     "shortName": "Document and Entity Information",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "body",
       "html"
      ],
      "baseRef": "pten-8k_20200604.htm",
      "contextRef": "C_0000889900_20200604_20200604",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "dei:DocumentType",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    }
   },
   "segmentCount": 2,
   "tag": {
    "dei_AmendmentFlag": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Boolean flag that is true when the XBRL content amends previously-filed or accepted submission.",
        "label": "Amendment Flag",
        "terseLabel": "Amendment Flag"
       }
      }
     },
     "localname": "AmendmentFlag",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.patenergy.com/20200604/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "booleanItemType"
    },
    "dei_CityAreaCode": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Area code of city",
        "label": "City Area Code",
        "terseLabel": "City Area Code"
       }
      }
     },
     "localname": "CityAreaCode",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.patenergy.com/20200604/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "normalizedStringItemType"
    },
    "dei_CoverAbstract": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Cover page.",
        "label": "Cover [Abstract]"
       }
      }
     },
     "localname": "CoverAbstract",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "xbrltype": "stringItemType"
    },
    "dei_DocumentPeriodEndDate": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The end date of the period reflected on the cover page if a periodic report. For all other reports and registration statements containing historical data, it is the date up through which that historical data is presented.  If there is no historical data in the report, use the filing date. The format of the date is CCYY-MM-DD.",
        "label": "Document Period End Date",
        "terseLabel": "Document Period End Date"
       }
      }
     },
     "localname": "DocumentPeriodEndDate",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.patenergy.com/20200604/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "dateItemType"
    },
    "dei_DocumentType": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.",
        "label": "Document Type",
        "terseLabel": "Document Type"
       }
      }
     },
     "localname": "DocumentType",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.patenergy.com/20200604/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "submissionTypeItemType"
    },
    "dei_EntityAddressAddressLine1": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Address Line 1 such as Attn, Building Name, Street Name",
        "label": "Entity Address Address Line1",
        "terseLabel": "Entity Address Address Line1"
       }
      }
     },
     "localname": "EntityAddressAddressLine1",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.patenergy.com/20200604/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "normalizedStringItemType"
    },
    "dei_EntityAddressAddressLine2": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Address Line 2 such as Street or Suite number",
        "label": "Entity Address Address Line2",
        "terseLabel": "Entity Address, Address Line Two"
       }
      }
     },
     "localname": "EntityAddressAddressLine2",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.patenergy.com/20200604/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "normalizedStringItemType"
    },
    "dei_EntityAddressCityOrTown": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Name of the City or Town",
        "label": "Entity Address City Or Town",
        "terseLabel": "Entity Address City Or Town"
       }
      }
     },
     "localname": "EntityAddressCityOrTown",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.patenergy.com/20200604/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "normalizedStringItemType"
    },
    "dei_EntityAddressPostalZipCode": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Code for the postal or zip code",
        "label": "Entity Address Postal Zip Code",
        "terseLabel": "Entity Address Postal Zip Code"
       }
      }
     },
     "localname": "EntityAddressPostalZipCode",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.patenergy.com/20200604/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "normalizedStringItemType"
    },
    "dei_EntityAddressStateOrProvince": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Name of the state or province.",
        "label": "Entity Address State Or Province",
        "terseLabel": "Entity Address State Or Province"
       }
      }
     },
     "localname": "EntityAddressStateOrProvince",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.patenergy.com/20200604/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "stateOrProvinceItemType"
    },
    "dei_EntityCentralIndexKey": {
     "auth_ref": [
      "r5"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.",
        "label": "Entity Central Index Key",
        "terseLabel": "Entity Central Index Key"
       }
      }
     },
     "localname": "EntityCentralIndexKey",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.patenergy.com/20200604/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "centralIndexKeyItemType"
    },
    "dei_EntityEmergingGrowthCompany": {
     "auth_ref": [
      "r5"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Indicate if registrant meets the emerging growth company criteria.",
        "label": "Entity Emerging Growth Company",
        "terseLabel": "Entity Emerging Growth Company"
       }
      }
     },
     "localname": "EntityEmergingGrowthCompany",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.patenergy.com/20200604/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "booleanItemType"
    },
    "dei_EntityFileNumber": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen.",
        "label": "Entity File Number",
        "terseLabel": "Entity File Number"
       }
      }
     },
     "localname": "EntityFileNumber",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.patenergy.com/20200604/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "fileNumberItemType"
    },
    "dei_EntityIncorporationStateCountryCode": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Two-character EDGAR code representing the state or country of incorporation.",
        "label": "Entity Incorporation State Country Code",
        "terseLabel": "Entity Incorporation State Country Code"
       }
      }
     },
     "localname": "EntityIncorporationStateCountryCode",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.patenergy.com/20200604/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "edgarStateCountryItemType"
    },
    "dei_EntityRegistrantName": {
     "auth_ref": [
      "r5"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.",
        "label": "Entity Registrant Name",
        "terseLabel": "Entity Registrant Name"
       }
      }
     },
     "localname": "EntityRegistrantName",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.patenergy.com/20200604/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "normalizedStringItemType"
    },
    "dei_EntityTaxIdentificationNumber": {
     "auth_ref": [
      "r5"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.",
        "label": "Entity Tax Identification Number",
        "terseLabel": "Entity Tax Identification Number"
       }
      }
     },
     "localname": "EntityTaxIdentificationNumber",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.patenergy.com/20200604/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "employerIdItemType"
    },
    "dei_LocalPhoneNumber": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Local phone number for entity.",
        "label": "Local Phone Number",
        "terseLabel": "Local Phone Number"
       }
      }
     },
     "localname": "LocalPhoneNumber",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.patenergy.com/20200604/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "normalizedStringItemType"
    },
    "dei_NoTradingSymbolFlag": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Boolean flag that is true only for a security having no trading symbol.",
        "label": "No Trading Symbol Flag",
        "terseLabel": "No Trading Symbol Flag"
       }
      }
     },
     "localname": "NoTradingSymbolFlag",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.patenergy.com/20200604/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "booleanItemType"
    },
    "dei_PreCommencementIssuerTenderOffer": {
     "auth_ref": [
      "r2"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act.",
        "label": "Pre Commencement Issuer Tender Offer",
        "terseLabel": "Pre-commencement Issuer Tender Offer"
       }
      }
     },
     "localname": "PreCommencementIssuerTenderOffer",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.patenergy.com/20200604/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "booleanItemType"
    },
    "dei_PreCommencementTenderOffer": {
     "auth_ref": [
      "r3"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act.",
        "label": "Pre Commencement Tender Offer",
        "terseLabel": "Pre-commencement Tender Offer"
       }
      }
     },
     "localname": "PreCommencementTenderOffer",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.patenergy.com/20200604/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "booleanItemType"
    },
    "dei_Security12bTitle": {
     "auth_ref": [
      "r0"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Title of a 12(b) registered security.",
        "label": "Security12b Title",
        "terseLabel": "Title of 12(b) Security"
       }
      }
     },
     "localname": "Security12bTitle",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.patenergy.com/20200604/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "securityTitleItemType"
    },
    "dei_SecurityExchangeName": {
     "auth_ref": [
      "r1"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Name of the Exchange on which a security is registered.",
        "label": "Security Exchange Name",
        "terseLabel": "Security Exchange Name"
       }
      }
     },
     "localname": "SecurityExchangeName",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.patenergy.com/20200604/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "edgarExchangeCodeItemType"
    },
    "dei_SolicitingMaterial": {
     "auth_ref": [
      "r4"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as soliciting material pursuant to Rule 14a-12 under the Exchange Act.",
        "label": "Soliciting Material",
        "terseLabel": "Soliciting Material"
       }
      }
     },
     "localname": "SolicitingMaterial",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.patenergy.com/20200604/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "booleanItemType"
    },
    "dei_TradingSymbol": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Trading symbol of an instrument as listed on an exchange.",
        "label": "Trading Symbol",
        "terseLabel": "Trading Symbol"
       }
      }
     },
     "localname": "TradingSymbol",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.patenergy.com/20200604/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "tradingSymbolItemType"
    },
    "dei_WrittenCommunications": {
     "auth_ref": [
      "r6"
     ],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as written communications pursuant to Rule 425 under the Securities Act.",
        "label": "Written Communications",
        "terseLabel": "Written Communications"
       }
      }
     },
     "localname": "WrittenCommunications",
     "nsuri": "http://xbrl.sec.gov/dei/2019-01-31",
     "presentation": [
      "http://www.patenergy.com/20200604/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "booleanItemType"
    },
    "pten_DocumentAndEntityInformationLineItems": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Document and entity information.",
        "label": "Document And Entity Information [Line Items]",
        "terseLabel": "Document And Entity Information [Line Items]"
       }
      }
     },
     "localname": "DocumentAndEntityInformationLineItems",
     "nsuri": "http://www.patenergy.com/20200604",
     "presentation": [
      "http://www.patenergy.com/20200604/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "stringItemType"
    },
    "pten_DocumentAndEntityInformationTable": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Document and entity information table.",
        "label": "Document And Entity Information [Table]",
        "terseLabel": "Document And Entity Information [Table]"
       }
      }
     },
     "localname": "DocumentAndEntityInformationTable",
     "nsuri": "http://www.patenergy.com/20200604",
     "presentation": [
      "http://www.patenergy.com/20200604/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "stringItemType"
    },
    "pten_PreferredStockPurchaseRightsOneMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Preferred stock purchase rights one.",
        "label": "Preferred Stock Purchase Rights One [Member]",
        "terseLabel": "Preferred Stock Purchase Rights"
       }
      }
     },
     "localname": "PreferredStockPurchaseRightsOneMember",
     "nsuri": "http://www.patenergy.com/20200604",
     "presentation": [
      "http://www.patenergy.com/20200604/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_ClassOfStockDomain": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Class Of Stock [Domain]",
        "terseLabel": "Class of Stock"
       }
      }
     },
     "localname": "ClassOfStockDomain",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.patenergy.com/20200604/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_CommonStockMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Common Stock [Member]",
        "terseLabel": "Common Stock"
       }
      }
     },
     "localname": "CommonStockMember",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.patenergy.com/20200604/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_StatementClassOfStockAxis": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "label": "Statement Class Of Stock [Axis]",
        "terseLabel": "Class of Stock"
       }
      }
     },
     "localname": "StatementClassOfStockAxis",
     "nsuri": "http://fasb.org/us-gaap/2019-01-31",
     "presentation": [
      "http://www.patenergy.com/20200604/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "stringItemType"
    }
   },
   "unitCount": 0
  }
 },
 "std_ref": {
  "r0": {
   "Name": "Exchange Act",
   "Number": "240",
   "Publisher": "SEC",
   "Section": "12",
   "Subsection": "b"
  },
  "r1": {
   "Name": "Exchange Act",
   "Number": "240",
   "Publisher": "SEC",
   "Section": "12",
   "Subsection": "d1-1"
  },
  "r2": {
   "Name": "Exchange Act",
   "Number": "240",
   "Publisher": "SEC",
   "Section": "13e",
   "Subsection": "4c"
  },
  "r3": {
   "Name": "Exchange Act",
   "Number": "240",
   "Publisher": "SEC",
   "Section": "14d",
   "Subsection": "2b"
  },
  "r4": {
   "Name": "Exchange Act",
   "Number": "240",
   "Publisher": "SEC",
   "Section": "14a",
   "Subsection": "12"
  },
  "r5": {
   "Name": "Regulation 12B",
   "Number": "240",
   "Publisher": "SEC",
   "Section": "12",
   "Subsection": "b-2"
  },
  "r6": {
   "Name": "Securities Act",
   "Number": "230",
   "Publisher": "SEC",
   "Section": "425"
  }
 },
 "version": "2.1"
}
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>14
<FILENAME>R1.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
							function toggleNextSibling (e) {
							if (e.nextSibling.style.display=='none') {
							e.nextSibling.style.display='block';
							} else { e.nextSibling.style.display='none'; }
							}</script>
</head>
<body>
<span style="display: none;">v3.20.1</span><table class="report" border="0" cellspacing="2" id="idp6670177920">
<tr>
<th class="tl" colspan="1" rowspan="1"><div style="width: 200px;"><strong>Document and Entity Information<br></strong></div></th>
<th class="th"><div>Jun. 04, 2020</div></th>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_DocumentAndEntityInformationLineItems', window );"><strong>Document And Entity Information [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_DocumentType', window );">Document Type</a></td>
<td class="text">8-K<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_AmendmentFlag', window );">Amendment Flag</a></td>
<td class="text">false<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_DocumentPeriodEndDate', window );">Document Period End Date</a></td>
<td class="text">Jun.  04,  2020<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityRegistrantName', window );">Entity Registrant Name</a></td>
<td class="text">Patterson-UTI Energy, Inc.<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityCentralIndexKey', window );">Entity Central Index Key</a></td>
<td class="text">0000889900<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityEmergingGrowthCompany', window );">Entity Emerging Growth Company</a></td>
<td class="text">false<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityFileNumber', window );">Entity File Number</a></td>
<td class="text">1-39270<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityIncorporationStateCountryCode', window );">Entity Incorporation State Country Code</a></td>
<td class="text">DE<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityTaxIdentificationNumber', window );">Entity Tax Identification Number</a></td>
<td class="text">75-2504748<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityAddressAddressLine1', window );">Entity Address Address Line1</a></td>
<td class="text">10713 W. Sam Houston Pkwy N<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityAddressAddressLine2', window );">Entity Address, Address Line Two</a></td>
<td class="text">Suite 800<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityAddressCityOrTown', window );">Entity Address City Or Town</a></td>
<td class="text">Houston<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityAddressStateOrProvince', window );">Entity Address State Or Province</a></td>
<td class="text">TX<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_EntityAddressPostalZipCode', window );">Entity Address Postal Zip Code</a></td>
<td class="text">77064<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_CityAreaCode', window );">City Area Code</a></td>
<td class="text">281<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_LocalPhoneNumber', window );">Local Phone Number</a></td>
<td class="text">765-7100<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_WrittenCommunications', window );">Written Communications</a></td>
<td class="text">false<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_SolicitingMaterial', window );">Soliciting Material</a></td>
<td class="text">false<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_PreCommencementTenderOffer', window );">Pre-commencement Tender Offer</a></td>
<td class="text">false<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_PreCommencementIssuerTenderOffer', window );">Pre-commencement Issuer Tender Offer</a></td>
<td class="text">false<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StatementClassOfStockAxis=us-gaap_CommonStockMember', window );">Common Stock</a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_DocumentAndEntityInformationLineItems', window );"><strong>Document And Entity Information [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_Security12bTitle', window );">Title of 12(b) Security</a></td>
<td class="text">Common Stock, $0.01 Par Value<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_TradingSymbol', window );">Trading Symbol</a></td>
<td class="text">PTEN<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_SecurityExchangeName', window );">Security Exchange Name</a></td>
<td class="text">NASDAQ<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_us-gaap_StatementClassOfStockAxis=pten_PreferredStockPurchaseRightsOneMember', window );">Preferred Stock Purchase Rights</a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_pten_DocumentAndEntityInformationLineItems', window );"><strong>Document And Entity Information [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_Security12bTitle', window );">Title of 12(b) Security</a></td>
<td class="text">Preferred Stock Purchase Rights<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_SecurityExchangeName', window );">Security Exchange Name</a></td>
<td class="text">NASDAQ<span></span>
</td>
</tr>
<tr class="re">
<td class="pl " style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="top.Show.showAR( this, 'defref_dei_NoTradingSymbolFlag', window );">No Trading Symbol Flag</a></td>
<td class="text">true<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_AmendmentFlag">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Boolean flag that is true when the XBRL content amends previously-filed or accepted submission.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_AmendmentFlag</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:booleanItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_CityAreaCode">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Area code of city</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_CityAreaCode</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_DocumentPeriodEndDate">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The end date of the period reflected on the cover page if a periodic report. For all other reports and registration statements containing historical data, it is the date up through which that historical data is presented.  If there is no historical data in the report, use the filing date. The format of the date is CCYY-MM-DD.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_DocumentPeriodEndDate</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:dateItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_DocumentType">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_DocumentType</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:submissionTypeItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityAddressAddressLine1">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Address Line 1 such as Attn, Building Name, Street Name</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityAddressAddressLine1</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityAddressAddressLine2">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Address Line 2 such as Street or Suite number</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityAddressAddressLine2</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityAddressCityOrTown">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Name of the City or Town</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityAddressCityOrTown</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityAddressPostalZipCode">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Code for the postal or zip code</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityAddressPostalZipCode</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityAddressStateOrProvince">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Name of the state or province.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityAddressStateOrProvince</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:stateOrProvinceItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityCentralIndexKey">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Regulation 12B<br> -Number 240<br> -Section 12<br> -Subsection b-2<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityCentralIndexKey</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:centralIndexKeyItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityEmergingGrowthCompany">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Indicate if registrant meets the emerging growth company criteria.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Regulation 12B<br> -Number 240<br> -Section 12<br> -Subsection b-2<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityEmergingGrowthCompany</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:booleanItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityFileNumber">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityFileNumber</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:fileNumberItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityIncorporationStateCountryCode">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Two-character EDGAR code representing the state or country of incorporation.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityIncorporationStateCountryCode</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:edgarStateCountryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityRegistrantName">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Regulation 12B<br> -Number 240<br> -Section 12<br> -Subsection b-2<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityRegistrantName</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityTaxIdentificationNumber">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Regulation 12B<br> -Number 240<br> -Section 12<br> -Subsection b-2<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityTaxIdentificationNumber</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:employerIdItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_LocalPhoneNumber">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Local phone number for entity.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_LocalPhoneNumber</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_NoTradingSymbolFlag">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Boolean flag that is true only for a security having no trading symbol.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_NoTradingSymbolFlag</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:booleanItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_PreCommencementIssuerTenderOffer">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Exchange Act<br> -Number 240<br> -Section 13e<br> -Subsection 4c<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_PreCommencementIssuerTenderOffer</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:booleanItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_PreCommencementTenderOffer">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Exchange Act<br> -Number 240<br> -Section 14d<br> -Subsection 2b<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_PreCommencementTenderOffer</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:booleanItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_Security12bTitle">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Title of a 12(b) registered security.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Exchange Act<br> -Number 240<br> -Section 12<br> -Subsection b<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_Security12bTitle</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:securityTitleItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_SecurityExchangeName">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Name of the Exchange on which a security is registered.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Exchange Act<br> -Number 240<br> -Section 12<br> -Subsection d1-1<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_SecurityExchangeName</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:edgarExchangeCodeItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_SolicitingMaterial">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as soliciting material pursuant to Rule 14a-12 under the Exchange Act.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Exchange Act<br> -Section 14a<br> -Number 240<br> -Subsection 12<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_SolicitingMaterial</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:booleanItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_TradingSymbol">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Trading symbol of an instrument as listed on an exchange.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_TradingSymbol</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:tradingSymbolItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_WrittenCommunications">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as written communications pursuant to Rule 425 under the Securities Act.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Securities Act<br> -Number 230<br> -Section 425<br></p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_WrittenCommunications</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:booleanItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_pten_DocumentAndEntityInformationLineItems">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Definition</a><div><p>Document and entity information.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">pten_DocumentAndEntityInformationLineItems</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>pten_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StatementClassOfStockAxis=us-gaap_CommonStockMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StatementClassOfStockAxis=us-gaap_CommonStockMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StatementClassOfStockAxis=pten_PreferredStockPurchaseRightsOneMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="top.Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="top.Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StatementClassOfStockAxis=pten_PreferredStockPurchaseRightsOneMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
</div>
</body>
</html>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
