<SEC-DOCUMENT>0001193125-15-026709-index.html : 20150130
<SEC-HEADER>0001193125-15-026709.hdr.sgml : 20150130
<ACCEPTANCE-DATETIME>20150130091152
ACCESSION NUMBER:		0001193125-15-026709
CONFORMED SUBMISSION TYPE:	SC 13G/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20150130
DATE AS OF CHANGE:		20150130

SUBJECT COMPANY:	

	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:		SC 13G/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-44095
		FILM NUMBER:		15560913

	BUSINESS ADDRESS:	
		STREET 1:		4510 LAMESA HWY
		STREET 2:		P O DRAWER 1416
		CITY:			SNYDER
		STATE:			TX
		ZIP:			79549
		BUSINESS PHONE:		9155731104

	MAIL ADDRESS:	
		STREET 1:		P O DRAWER 1416
		CITY:			SNYDER
		STATE:			TX
		ZIP:			79550

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	PATTERSON ENERGY INC
		DATE OF NAME CHANGE:	19940228

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Artisan Partners Limited Partnership
		CENTRAL INDEX KEY:			0001466153
		IRS NUMBER:				300551775
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G/A

	BUSINESS ADDRESS:	
		STREET 1:		875 E WISCONSIN AVE
		STREET 2:		STE 800
		CITY:			MILWAUKEE
		STATE:			WI
		ZIP:			53202
		BUSINESS PHONE:		(414) 390-6100

	MAIL ADDRESS:	
		STREET 1:		875 E WISCONSIN AVE
		STREET 2:		STE 800
		CITY:			MILWAUKEE
		STATE:			WI
		ZIP:			53202
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13G/A
<SEQUENCE>1
<FILENAME>d858610dsc13ga.txt
<DESCRIPTION>PATTERSON-UTI ENERGY INC
<TEXT>
Document 1 - file: d858610dsc13ga.txt

</DOCUMENT>
</SEC-DOCUMENT>