    <SEC-DOCUMENT>0001564590-21-018518-index.html : 20210412
    <SEC-HEADER>0001564590-21-018518.hdr.sgml : 20210412
    <ACCEPTANCE-DATETIME>20210412165756
    ACCESSION NUMBER:		0001564590-21-018518
    CONFORMED SUBMISSION TYPE:	DEFA14A
    PUBLIC DOCUMENT COUNT:		3
    FILED AS OF DATE:		20210412
    DATE AS OF CHANGE:		20210412

    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:		DEFA14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-39270
    		FILM NUMBER:		21821269

    	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>DEFA14A
    <SEQUENCE>1
    <FILENAME>pten-defa14a_20210412.htm
    <DESCRIPTION>DEFA14A
    <TEXT>
    Document 1 - file: pten-defa14a_20210412.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>2
    <FILENAME>gjdmszz4uxm5000002.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 2 - file: gjdmszz4uxm5000002.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>gjdmszz4uxm5000001.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 3 - file: gjdmszz4uxm5000001.jpg

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    </SEC-DOCUMENT>