UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A INFORMATION

Proxy Statement Pursuant to Section 14(a) of the

Securities Exchange Act of 1934

(Amendment No.     )

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PATTERSON-UTI ENERGY, INC.

(Name of registrant as specified in its charter)

(Name of person(s) filing proxy statement, if other than the registrant)

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See the reverse side of this notice to obtain proxy materials and voting instructions.*** Exercise Your Right to Vote ***Important Notice Regarding the Availability of Proxy Materials for the Stockholder Meeting to Be Held on <mtgdate>.You are receiving this communication because you hold shares in the above named company. This is not a ballot. You cannot use this notice to vote these shares. This communication presents only an overview of the more complete proxy materials that areavailable to you on the Internet. You may view the proxymaterials online at www.proxyvote.com or easily request a paper copy (see reverse side).We encourage you to access and review all of the important information contained in the proxy materials before voting. Meeting Information Meeting Type:<mtgtype>For holders as of:<recdate>Date: Time: <mtgtime>Location:0000377189_1 R1.0.1.17PATTERSON-UTI ENERGY, INC.PATTERSON-UTI ENERGY, INC.10713 W. SAM HOUSTON PARKWAY NORTHSUITE 800HOUSTON, TX 77064Annual Meeting April 16, 2018June 14, 2018June 14, 201810:00 AM CDTCorporate Headquarters10713 W. Sam Houston Pkwy North Suite 125 Houston, TX 77064

Please Choose One of the Following Voting MethodsVote In Person: Many stockholder meetings have attendance requirements including, but not limited to, the possession of an attendance ticket issued by the entity holding the meeting. Please check the meeting materials for any special requirements for meeting attendance. At the meeting, you will need to request a ballot to vote these shares.Vote By Internet: To vote now by Internet, go to www.proxyvote.com. Have the information that is printed in the boxmarked by the arrow available and follow the instructions.Vote By Mail: You can vote by mail by requesting a paper copy of the materials, which will include a proxy card.How To Vote.....Before You VoteHow to Access the Proxy Materials Proxy Materials Available to VIEW or RECEIVE:How to View Online:Have the information that is printed in the box marked by the arrow (located on the following page) and visit: www.proxyvote.com.How to Request and Receive a PAPER or E-MAIL Copy:If you want to receive a paper or e-mail copy of these documents, you must request one. There is NO charge for requesting a copy. Please choose one of the following methods to make your request:1)BY INTERNET:www.proxyvote.com2)BY TELEPHONE:1-800-579-16393)BY E-MAIL*:sendmaterial@proxyvote.com*If requesting materials by e-mail, please send a blank e-mail with the information that is printed in the box marked by the arrow (located on the following page) in the subject line...........0000377189_2 R1.0.1.171. Annual Report 2. Notice & Proxy Statement Requests, instructions and other inquiries sent to this e-mail address will NOT be forwarded to your investment advisor. Please make the request as instructed above on or before May 31, 2018 to facilitate timely delivery.

Voting items0000377189_3 R1.0.1.17The Board of Directors recommends you vote FOR the following:1. Election of Directors Nominees01 Mark S. Siegel02 Charles O. Buckner03 Tiffany (TJ) Thom Cepak04 Michael W. Conlon05 William A. Hendricks Jr06 Curtis W. Huff07 Terry H. Hunt08 Janeen S. JudahThe Board of Directors recommends you vote FOR proposals 2, 3 and 4.2. Approval of amendment of Patterson-UTI's Restated Certificate of Incorporation.3. Ratification of the selection of PricewaterhouseCoopers LLP as the independent registered public accounting firm of Patterson-UTI for the fiscal year ending December 31, 2018.4. Approval of an advisory resolution on Patterson-UTI's compensation of its named executive officers. NOTE: Such other business as may properly come before the meeting or any adjournment thereof.

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