<SEC-DOCUMENT>0001564590-20-024723.txt : 20200512
<SEC-HEADER>0001564590-20-024723.hdr.sgml : 20200512
<ACCEPTANCE-DATETIME>20200512170231
ACCESSION NUMBER:		0001564590-20-024723
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		13
CONFORMED PERIOD OF REPORT:	20200511
ITEM INFORMATION:		Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers
FILED AS OF DATE:		20200512
DATE AS OF CHANGE:		20200512

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:		20869923

	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_20200511.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      : 2020-05-12T19:14:58.0902092+00:00 -->
<!-- Version            : 5.0.1.385 -->
<!-- Package ID         : 488bd2fad71c44698773cf36bcaaa411 -->
<!-- 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/20200511" 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_20200511.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_20200511_20200511">false</ix:nonNumeric>
			<ix:nonNumeric id="F_000004" name="dei:EntityCentralIndexKey" contextRef="C_0000889900_20200511_20200511">0000889900</ix:nonNumeric>
			<ix:nonNumeric id="F_000024" name="dei:NoTradingSymbolFlag" contextRef="C_0000889900_us-gaapStatementClassOfStockAxis_ptenPreferredStockPurchaseRightsMember_20200511_20200511">true</ix:nonNumeric>
		</ix:hidden>
		<ix:references>
			<link:schemaRef xlink:type="simple" xlink:href="pten-20200511.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_20200511_20200511">
				<xbrli:entity>
					<xbrli:identifier scheme="http://www.sec.gov/CIK">0000889900</xbrli:identifier>
				</xbrli:entity>
				<xbrli:period>
					<xbrli:startDate>2020-05-11</xbrli:startDate>
					<xbrli:endDate>2020-05-11</xbrli:endDate>
				</xbrli:period>
			</xbrli:context>
			<xbrli:context id="C_0000889900_us-gaapStatementClassOfStockAxis_us-gaapCommonStockMember_20200511_20200511">
				<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>2020-05-11</xbrli:startDate>
					<xbrli:endDate>2020-05-11</xbrli:endDate>
				</xbrli:period>
			</xbrli:context>
			<xbrli:context id="C_0000889900_us-gaapStatementClassOfStockAxis_ptenPreferredStockPurchaseRightsMember_20200511_20200511">
				<xbrli:entity>
					<xbrli:identifier scheme="http://www.sec.gov/CIK">0000889900</xbrli:identifier>
					<xbrli:segment>
						<xbrldi:explicitMember dimension="us-gaap:StatementClassOfStockAxis">pten:PreferredStockPurchaseRightsMember</xbrldi:explicitMember>
					</xbrli:segment>
				</xbrli:entity>
				<xbrli:period>
					<xbrli:startDate>2020-05-11</xbrli:startDate>
					<xbrli:endDate>2020-05-11</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_20200511_20200511">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_20200511_20200511" format="ixt:datemonthdayyearen">May 11, 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_20200511_20200511">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_20200511_20200511" 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_20200511_20200511">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_20200511_20200511">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_20200511_20200511">10713 W. Sam Houston Pkwy N</ix:nonNumeric>, <ix:nonNumeric id="F_000010" name="dei:EntityAddressAddressLine2" contextRef="C_0000889900_20200511_20200511">Suite 800</ix:nonNumeric>, <ix:nonNumeric id="F_000011" name="dei:EntityAddressCityOrTown" contextRef="C_0000889900_20200511_20200511">Houston</ix:nonNumeric>, <ix:nonNumeric id="F_000012" name="dei:EntityAddressStateOrProvince" contextRef="C_0000889900_20200511_20200511" 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_20200511_20200511">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_20200511_20200511">281</ix:nonNumeric></span>-<ix:nonNumeric id="F_000015" name="dei:LocalPhoneNumber" contextRef="C_0000889900_20200511_20200511">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_20200511_20200511" 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_20200511_20200511" 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_20200511_20200511" 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_20200511_20200511" 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_20200511_20200511">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_20200511_20200511">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_20200511_20200511" 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_ptenPreferredStockPurchaseRightsMember_20200511_20200511">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_ptenPreferredStockPurchaseRightsMember_20200511_20200511" 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_20200511_20200511" 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="text-align:justify;margin-top:6pt;margin-bottom:0pt;text-indent:4.94%;color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">The Compensation Committee (the &#8220;Committee&#8221;) of the Board of Directors of Patterson-UTI Energy, Inc. (the &#8220;Company&#8221;) has approved certain compensatory arrangements for the Company&#8217;s Named Executive Officers.&#160;&#160;As part of the Company&#8217;s standard annual incentive compensation grant cycle, in April 2020 the Committee approved an award to the Company&#8217;s Named Executive Officers of time-based restricted stock units that vest in equal annual installments over three years from the date of grant and an award of performance share units that may vest from 0% to 200% of the target award level based on the Company&#8217;s relative total stockholder return performance compared to a peer group over a three-year performance period ending March 31, 2023 (the &#8220;Performance Period&#8221;), and subject to limitations on payout if the total stockholder return is negative or zero during the Performance Period.&#160;&#160;The Committee added an additional performance condition for the 2020 grant of performance share units that requires the Company&#8217;s total stockholder return for the Performance Period to be equal to or greater than the total stockholder return of the S&#38;P 500 Index for the Performance Period.&#160;&#160;</p>
<p style="text-align:justify;margin-top:6pt;margin-bottom:0pt;text-indent:4.94%;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">With respect to the performance share units, the recipients will receive a target number of shares if the Company&#8217;s total stockholder return during the Performance Period, when compared to the peer group, is at the 55<sup style="font-size:85%;line-height:120%;vertical-align:top">th</sup> percentile. If the Company&#8217;s total stockholder return during the Performance Period, when compared to the peer group, is at the 75<sup style="font-size:85%;line-height:120%;vertical-align:top">th</sup> percentile or higher, then the recipients will receive two times the target number of shares. If the Company&#8217;s total stockholder return during the Performance Period, when compared to the peer group, is at the 25<sup style="font-size:85%;line-height:120%;vertical-align:top">th</sup> percentile, then the recipients will only receive one-half of the target number of shares. If the Company&#8217;s total stockholder return during the Performance Period, when compared to the peer group, is between the 25<sup style="font-size:85%;line-height:120%;vertical-align:top">th</sup> and target percentile, or the target and 75<sup style="font-size:85%;line-height:120%;vertical-align:top">th</sup> percentile, then the shares to be received by the recipients will be determined using linear interpolation for levels of achievement between these points.</p>
<p style="text-align:justify;margin-top:6pt;margin-bottom:0pt;text-indent:4.94%;color:#000000;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">In recognition of the significant decline in the Company&#8217;s stock price during the past year, the Committee desired that the 2020 target long-term incentive compensation value for the Company&#8217;s Named Executive Officers be approximately 75% less than their 2019 target long-term incentive compensation value. </p>
<p style="text-align:justify;margin-top:6pt;margin-bottom:0pt;text-indent:4.94%;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Due to the Company&#8217;s currently depressed stock price, largely as a result of the rapid decline in crude oil prices, including as a result of economic repercussions from the recent COVID-19 pandemic, and the limitations on annual share award issuances under the <span style="color:#000000;">Company&#8217;s Amended and Restated 2014 Long-Term Incentive Plan, as amended (the &#8220;Plan&#8221;), the Committee was not able to provide its desired total 2020 target long-term incentive opportunity to the Company&#8217;s Chief Executive Officer and President, William A. Hendricks, Jr., solely in the form of share-based awards.&#160; Accordingly, on May 11, 2020, the Committee approved a grant of long-term performance-based phantom units for Mr. Hendricks outside of the Plan. Pursuant to this phantom unit grant, Mr. Hendricks may earn from 0% to 200% of a target award of 298,500 phantom units based on the Company&#8217;s achievement of the same performance conditions over the same Performance Period that applies to his 2020 annual award of 72,000 performance share units.&#160;&#160;Earned phantom units, if any, will be settled in 2023, following completion of the three-year Performance Period, in a cash payment equal to the number of earned phantom units multiplied by the Company&#8217;s average trading price per share over the twenty (20) consecutive trading days ending March 31, 2023.&#160;&#160;</span></p>
<p style="text-align:justify;margin-top:6pt;margin-bottom:0pt;text-indent:4.94%;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Accordingly, the <span style="color:#000000;">Company&#8217;s</span> 2020 long-term incentive compensation awards of 356,000 restricted stock units, 72,000 target performance share units, and 298,500 target phantom units to Mr. Hendricks accomplished the Committee&#8217;s goal of reducing 2020 target long-term incentive compensation for Mr. Hendricks by approximately 75% from its 2019 level based on award values as of the date the Committee established Mr. Hendricks&#8217; targeted 2020 long-term incentive compensation value<span style="color:#000000;">.</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="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;">May 12, 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/ C. Andrew Smith</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: C. Andrew Smith</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;Executive Vice&#160;President and Chief Financial Officer</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-20200511.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      : 2020-05-11T20:36:41.5422594+00:00 -->
<!-- Version            : 5.0.1.385 -->
<!-- Package ID         : 488bd2fad71c44698773cf36bcaaa411 -->
<!-- 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/20200511" 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/20200511" 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/20200511/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-20200511_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-20200511_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-20200511_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/20200511/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_PreferredStockPurchaseRightsMember" name="PreferredStockPurchaseRightsMember" 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-20200511_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      : 2020-05-11T20:36:41.5422594+00:00 -->
<!-- Version            : 5.0.1.385 -->
<!-- Package ID         : 488bd2fad71c44698773cf36bcaaa411 -->
<!-- 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-20200511.xsd#TemplateLink" roleURI="http://www.patenergy.com/20200511/role/TemplateLink" />
  <link:roleRef roleURI="http://www.patenergy.com/20200511/taxonomy/role/DocumentDocumentAndEntityInformation" xlink:href="pten-20200511.xsd#Role_DocumentDocumentAndEntityInformation" xlink:type="simple" />
  <link:definitionLink xlink:type="extended" xlink:role="http://www.patenergy.com/20200511/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-20200511.xsd#pten_PreferredStockPurchaseRightsMember" xlink:type="locator" xlink:label="pten_PreferredStockPurchaseRightsMember" />
    <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-20200511.xsd#pten_DocumentAndEntityInformationTable" xlink:type="locator" xlink:label="pten_DocumentAndEntityInformationTable" />
    <link:loc xlink:href="pten-20200511.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_PreferredStockPurchaseRightsMember" 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-20200511_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      : 2020-05-11T20:36:41.5422594+00:00 -->
<!-- Version            : 5.0.1.385 -->
<!-- Package ID         : 488bd2fad71c44698773cf36bcaaa411 -->
<!-- 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-20200511.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-20200511.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-20200511.xsd#pten_PreferredStockPurchaseRightsMember" xlink:type="locator" xlink:label="pten_PreferredStockPurchaseRightsMember" />
    <link:label xml:lang="en-US" xlink:label="pten_PreferredStockPurchaseRightsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation">Preferred stock purchase rights.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="pten_PreferredStockPurchaseRightsMember" xlink:to="pten_PreferredStockPurchaseRightsMember_lbl" />
    <link:label xml:lang="en-US" xlink:label="pten_PreferredStockPurchaseRightsMember_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_PreferredStockPurchaseRightsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Preferred Stock Purchase Rights [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-20200511_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      : 2020-05-11T20:36:41.5422594+00:00 -->
<!-- Version            : 5.0.1.385 -->
<!-- Package ID         : 488bd2fad71c44698773cf36bcaaa411 -->
<!-- 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/20200511/role/TemplateLink" xlink:href="pten-20200511.xsd#TemplateLink" xlink:type="simple" />
  <link:roleRef roleURI="http://www.patenergy.com/20200511/taxonomy/role/DocumentDocumentAndEntityInformation" xlink:href="pten-20200511.xsd#Role_DocumentDocumentAndEntityInformation" xlink:type="simple" />
  <link:presentationLink xlink:type="extended" xlink:role="http://www.patenergy.com/20200511/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-20200511.xsd#pten_DocumentAndEntityInformationLineItems" xlink:type="locator" xlink:label="pten_DocumentAndEntityInformationLineItems" />
    <link:loc xlink:href="pten-20200511.xsd#pten_PreferredStockPurchaseRightsMember" xlink:type="locator" xlink:label="pten_PreferredStockPurchaseRightsMember" />
    <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-20200511.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_PreferredStockPurchaseRightsMember" 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>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>XML
<SEQUENCE>7
<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>9
<FILENAME>0001564590-20-024723-xbrl.zip
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
begin 644 0001564590-20-024723-xbrl.zip
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M[@)?$+#P@LF#M\27.=*("Y2V$+\Y63-''')<SSEQNTL6=+@: "1Z4(+1(YH
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M2"1#^(9F8T1K^7NW\P%R;X.UX&Y)896W2^4G>Y6Q3FJ\JS+XGA#HV[ID._/
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ML3]J$&&^GL=<E\W(9^Y1S^;4)?UXID5 C5TF1ZY++K&9))=,,G'-G++I=:*
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M,#(P,#4Q,5]D968N>&UL4$L! A0#%     @ 3HBL4#G<+WW2"   -&0  !4
M             ( !%0P  '!T96XM,C R,# U,3%?;&%B+GAM;%!+ 0(4 Q0
M   ( $Z(K%!C99G+$08  .H\   5              "  1H5  !P=&5N+3(P
M,C P-3$Q7W!R92YX;6Q02P$"% ,4    " !.B*Q0-+?DG&(5  !AFP  %
M            @ %>&P  <'1E;BTX:U\R,#(P,#4Q,2YH=&U02P4&      4
,!0!* 0  \C

end
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>10
<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="idp6669887232">
<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>May 11, 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">May 11,  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_PreferredStockPurchaseRightsMember', 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_PreferredStockPurchaseRightsMember">
<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_PreferredStockPurchaseRightsMember</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>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>11
<FILENAME>pten-8k_20200511_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/20200511"
  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-20200511.xsd" xlink:type="simple"/>
    <context id="C_0000889900_20200511_20200511">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000889900</identifier>
        </entity>
        <period>
            <startDate>2020-05-11</startDate>
            <endDate>2020-05-11</endDate>
        </period>
    </context>
    <context id="C_0000889900_us-gaapStatementClassOfStockAxis_us-gaapCommonStockMember_20200511_20200511">
        <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>2020-05-11</startDate>
            <endDate>2020-05-11</endDate>
        </period>
    </context>
    <context id="C_0000889900_us-gaapStatementClassOfStockAxis_ptenPreferredStockPurchaseRightsMember_20200511_20200511">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000889900</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:StatementClassOfStockAxis">pten:PreferredStockPurchaseRightsMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2020-05-11</startDate>
            <endDate>2020-05-11</endDate>
        </period>
    </context>
    <dei:AmendmentFlag contextRef="C_0000889900_20200511_20200511" id="F_000001">false</dei:AmendmentFlag>
    <dei:EntityCentralIndexKey contextRef="C_0000889900_20200511_20200511" id="F_000004">0000889900</dei:EntityCentralIndexKey>
    <dei:NoTradingSymbolFlag
      contextRef="C_0000889900_us-gaapStatementClassOfStockAxis_ptenPreferredStockPurchaseRightsMember_20200511_20200511"
      id="F_000024">true</dei:NoTradingSymbolFlag>
    <dei:DocumentType contextRef="C_0000889900_20200511_20200511" id="F_000000">8-K</dei:DocumentType>
    <dei:DocumentPeriodEndDate contextRef="C_0000889900_20200511_20200511" id="F_000002">2020-05-11</dei:DocumentPeriodEndDate>
    <dei:EntityRegistrantName contextRef="C_0000889900_20200511_20200511" id="F_000003">Patterson-UTI Energy, Inc.</dei:EntityRegistrantName>
    <dei:EntityIncorporationStateCountryCode contextRef="C_0000889900_20200511_20200511" id="F_000007">DE</dei:EntityIncorporationStateCountryCode>
    <dei:EntityFileNumber contextRef="C_0000889900_20200511_20200511" id="F_000006">1-39270</dei:EntityFileNumber>
    <dei:EntityTaxIdentificationNumber contextRef="C_0000889900_20200511_20200511" id="F_000008">75-2504748</dei:EntityTaxIdentificationNumber>
    <dei:EntityAddressAddressLine1 contextRef="C_0000889900_20200511_20200511" id="F_000009">10713 W. Sam Houston Pkwy N</dei:EntityAddressAddressLine1>
    <dei:EntityAddressAddressLine2 contextRef="C_0000889900_20200511_20200511" id="F_000010">Suite 800</dei:EntityAddressAddressLine2>
    <dei:EntityAddressCityOrTown contextRef="C_0000889900_20200511_20200511" id="F_000011">Houston</dei:EntityAddressCityOrTown>
    <dei:EntityAddressStateOrProvince contextRef="C_0000889900_20200511_20200511" id="F_000012">TX</dei:EntityAddressStateOrProvince>
    <dei:EntityAddressPostalZipCode contextRef="C_0000889900_20200511_20200511" id="F_000013">77064</dei:EntityAddressPostalZipCode>
    <dei:CityAreaCode contextRef="C_0000889900_20200511_20200511" id="F_000014">281</dei:CityAreaCode>
    <dei:LocalPhoneNumber contextRef="C_0000889900_20200511_20200511" id="F_000015">765-7100</dei:LocalPhoneNumber>
    <dei:WrittenCommunications contextRef="C_0000889900_20200511_20200511" id="F_000016">false</dei:WrittenCommunications>
    <dei:SolicitingMaterial contextRef="C_0000889900_20200511_20200511" id="F_000017">false</dei:SolicitingMaterial>
    <dei:PreCommencementTenderOffer contextRef="C_0000889900_20200511_20200511" id="F_000018">false</dei:PreCommencementTenderOffer>
    <dei:PreCommencementIssuerTenderOffer contextRef="C_0000889900_20200511_20200511" id="F_000019">false</dei:PreCommencementIssuerTenderOffer>
    <dei:Security12bTitle
      contextRef="C_0000889900_us-gaapStatementClassOfStockAxis_us-gaapCommonStockMember_20200511_20200511"
      id="F_000020">Common Stock, $0.01 Par Value</dei:Security12bTitle>
    <dei:TradingSymbol
      contextRef="C_0000889900_us-gaapStatementClassOfStockAxis_us-gaapCommonStockMember_20200511_20200511"
      id="F_000021">PTEN</dei:TradingSymbol>
    <dei:SecurityExchangeName
      contextRef="C_0000889900_us-gaapStatementClassOfStockAxis_us-gaapCommonStockMember_20200511_20200511"
      id="F_000022">NASDAQ</dei:SecurityExchangeName>
    <dei:Security12bTitle
      contextRef="C_0000889900_us-gaapStatementClassOfStockAxis_ptenPreferredStockPurchaseRightsMember_20200511_20200511"
      id="F_000023">Preferred Stock Purchase Rights</dei:Security12bTitle>
    <dei:SecurityExchangeName
      contextRef="C_0000889900_us-gaapStatementClassOfStockAxis_ptenPreferredStockPurchaseRightsMember_20200511_20200511"
      id="F_000025">NASDAQ</dei:SecurityExchangeName>
    <dei:EntityEmergingGrowthCompany contextRef="C_0000889900_20200511_20200511" id="F_000005">false</dei:EntityEmergingGrowthCompany>
</xbrl>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>JSON
<SEQUENCE>12
<FILENAME>MetaLinks.json
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
{
 "instance": {
  "pten-8k_20200511.htm": {
   "axisCustom": 0,
   "axisStandard": 1,
   "contextCount": 3,
   "dts": {
    "definitionLink": {
     "local": [
      "pten-20200511_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_20200511.htm"
     ]
    },
    "labelLink": {
     "local": [
      "pten-20200511_lab.xml"
     ],
     "remote": [
      "https://xbrl.sec.gov/dei/2019/dei-doc-2019-01-31.xml"
     ]
    },
    "presentationLink": {
     "local": [
      "pten-20200511_pre.xml"
     ]
    },
    "referenceLink": {
     "remote": [
      "https://xbrl.sec.gov/dei/2019/dei-ref-2019-01-31.xml"
     ]
    },
    "schema": {
     "local": [
      "pten-20200511.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/20200511",
   "report": {
    "R1": {
     "firstAnchor": {
      "ancestors": [
       "p",
       "body",
       "html"
      ],
      "baseRef": "pten-8k_20200511.htm",
      "contextRef": "C_0000889900_20200511_20200511",
      "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/20200511/taxonomy/role/DocumentDocumentAndEntityInformation",
     "shortName": "Document and Entity Information",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "p",
       "body",
       "html"
      ],
      "baseRef": "pten-8k_20200511.htm",
      "contextRef": "C_0000889900_20200511_20200511",
      "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/20200511/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/20200511/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/20200511/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/20200511/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/20200511/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/20200511/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/20200511/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/20200511/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/20200511/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/20200511/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/20200511/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/20200511/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/20200511/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/20200511/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/20200511/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/20200511/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/20200511/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/20200511/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/20200511/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/20200511/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/20200511/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/20200511/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/20200511/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/20200511/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/20200511",
     "presentation": [
      "http://www.patenergy.com/20200511/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/20200511",
     "presentation": [
      "http://www.patenergy.com/20200511/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "xbrltype": "stringItemType"
    },
    "pten_PreferredStockPurchaseRightsMember": {
     "auth_ref": [],
     "lang": {
      "en-US": {
       "role": {
        "documentation": "Preferred stock purchase rights.",
        "label": "Preferred Stock Purchase Rights [Member]",
        "terseLabel": "Preferred Stock Purchase Rights"
       }
      }
     },
     "localname": "PreferredStockPurchaseRightsMember",
     "nsuri": "http://www.patenergy.com/20200511",
     "presentation": [
      "http://www.patenergy.com/20200511/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/20200511/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/20200511/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/20200511/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>13
<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_20200511.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/20200511/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_20200511.htm">pten-8k_20200511.htm</File>
    <File>pten-20200511.xsd</File>
    <File>pten-20200511_def.xml</File>
    <File>pten-20200511_lab.xml</File>
    <File>pten-20200511_pre.xml</File>
  </InputFiles>
  <SupplementalFiles/>
  <BaseTaxonomies>
    <BaseTaxonomy>http://fasb.org/us-gaap/2019-01-31</BaseTaxonomy>
    <BaseTaxonomy>http://xbrl.sec.gov/dei/2019-01-31</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>false</HasCalculationLinkbase>
</FilingSummary>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EXCEL
<SEQUENCE>14
<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?$9/
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M_>%W$?;1NJW[Q\9GP;:!7W?1?@%02P,$%     @ 3HBL4)E<G",0!@  G"<
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M.AQG0GS/]O:1I24RS^_Y"NM./&<?5I:P7<_/Y)Z,<B.[W?98??9/1VXCUZG
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M3K11D)6 E_FU;F4MG\NR\+LV_0]02P,$%     @ 3HBL4+JA.8K7 0  ,@8
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M[^?6T/!!XG-8\1S,Z6Y_"B]-\K!EG3>*G.[V9ZC%H-[.!?>_1/$#4$L#!!0
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M!   $P   %M#;VYT96YT7U1Y<&5S72YX;6RU5$U/PS ,_2M3KVC-X, !;;L
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M4$L! A0#%     @ 3HBL4!\CSP/     $P(   L              ( !
M %]R96QS+RYR96QS4$L! A0#%     @ 3HBL4"?HAPZ"    L0   !
M         ( !Z0   &1O8U!R;W!S+V%P<"YX;6Q02P$"% ,4    " !.B*Q0
ME-Z/KN\    K @  $0              @ &9 0  9&]C4')O<',O8V]R92YX
M;6Q02P$"% ,4    " !.B*Q0F5R<(Q &  "<)P  $P              @ &W
M @  >&PO=&AE;64O=&AE;64Q+GAM;%!+ 0(4 Q0    ( $Z(K% B1,#&\P(
M #$.   8              "  ?@(  !X;"]W;W)K<VAE971S+W-H965T,2YX
M;6Q02P$"% ,4    " !.B*Q07G32VH4"  #=!@  %               @ $A
M#   >&PO<VAA<F5D4W1R:6YG<RYX;6Q02P$"% ,4    " !.B*Q0NJ$YBM<!
M   R!@  #0              @ '8#@  >&PO<W1Y;&5S+GAM;%!+ 0(4 Q0
M   ( $Z(K% 6;2-_0P$  #P"   /              "  =H0  !X;"]W;W)K
M8F]O:RYX;6Q02P$"% ,4    " !.B*Q0_\ F"+T   "% @  &@
M    @ %*$@  >&PO7W)E;',O=V]R:V)O;VLN>&UL+G)E;'-02P$"% ,4
M" !.B*Q0"X_8 R$!  !7!   $P              @ $_$P  6T-O;G1E;G1?
@5'EP97-=+GAM;%!+!08     "@ * ( "  "1%      !

end
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
