Patterson-UTI and ADNOC Drilling Sign Agreements To Formalize The Previously Announced JV In The UAE; Patterson-UTI Will Hold A 15% Minority Equity Interest In Turnwell Industries LLC OPC; The ADNOC Drilling Subsidiary Will Hold A 55% Majority Stake, While SLB Will Hold A 30% Interest

PATTERSON-UTI ENERGY, INC. (NASDAQ:PTEN) ("Patterson-UTI" or "the Company") today announced that its subsidiary, Patterson-UTI TW Holdings LLC, has signed the previously announced joint venture agreement with a subsidiary of ADNOC Drilling, the largest national drilling contractor in the Middle East and the sole provider of drilling rig services in the Emirate of Abu Dhabi. As part of the agreement, Patterson-UTI will hold a 15% minority equity interest in Turnwell Industries LLC OPC ("Turnwell"), a company recently formed by ADNOC Drilling. Turnwell has been awarded a contract to drill and complete 144 unconventional wells for Abu Dhabi National Oil Company (ADNOC). The ADNOC Drilling subsidiary will hold a 55% majority stake, while SLB will hold a 30% interest.

In exchange for the minority equity interest, Patterson-UTI will provide unconventional drilling and completion expertise to Turnwell, as well as a limited cash contribution to fund our portion of working capital.