On the Record · Patterson UTI Energy
Patterson UTI Energy subsidiaries, as it lists them
The subsidiaries Patterson UTI Energy lists in its latest annual report, with the jurisdiction of each, linked to the filing.
Subsidiaries it lists
| Subsidiary | Jurisdiction |
|---|---|
| Ambar Lone Star Fluid Services LLC | Texas |
| Black Gold Oilfield Services | Ecuador |
| BEP Ulterra Holdings, Inc. | Delaware |
| BEP Ulterra Intermediate Holdings, Inc. | Delaware |
| Current Power Solutions, Inc. | Texas |
| Drilling Technologies 1 LLC | Delaware |
| Drilling Technologies 2 LLC | Delaware |
| ESP Completion Technologies, LLC | Texas |
| ESP Completion Technologies SA | Panama |
| Great Plains Oilfield Rental, L.L.C. | Oklahoma |
| Keane Group Holdings, LLC | Delaware |
| Keane International Holdings, LLC | Delaware |
| Keystone Rock & Excavation, L.L.C. | Oklahoma |
| KGH Intermediate Holdco I, LLC | Delaware |
| KGH Intermediate Holdco II, LLC | Delaware |
| Mobile Data Technologies Ltd. | Alberta, Canada |
| MS Directional, LLC | Texas |
| NexTier Completion Solutions Inc. | Delaware |
| NexTier Holding Co. | Delaware |
| NexTier Integrated Services LLC | Delaware |
| NexTier International LLC | Delaware |
| NexTier Oilfield Solutions LLC | Delaware |
| Patterson Petroleum LLC | Texas |
| Patterson-UTI Drilling Canada Limited | Nova Scotia, Canada |
| Patterson-UTI Drilling Company LLC | Texas |
| Patterson-UTI Drilling International, Inc. | Delaware |
| Patterson-UTI Holding Company LLC | Delaware |
| Patterson-UTI International Arabian Gulf Oil & Gas Investment – L.L.C. – S.P.C | Abu Dhabi |
| Patterson-UTI International (Argentina) S.R.L. | Argentina |
| Patterson-UTI International (Colombia) Ltda. S. de R.L. | Panama |
| Patterson - UTI International (Colombia) Ltda. S. de R.L. Sucursal Colombia | Colombia |
| Patterson-UTI International (Ecuador) S.A.S. | Ecuador |
| Patterson-UTI International Holdings, Inc | Delaware |
| Patterson-UTI International (Kuwait) Limited | British Virgin Islands |
| Patterson-UTI International Resources LLC | Delaware |
| Patterson-UTI TW Holdings LLC | Delaware |
| Patterson-UTI TW Services LLC | Delaware |
| Patterson-UTI Management Services, LLC | Delaware |
| Penny Global Leasing Sarl | Luxembourg |
| Pioneer Coiled Tubing Services, LLC | Delaware |
| Pioneer Drilling Services, LLC | Texas |
| Pioneer Energy Services LLC | Delaware |
| Pioneer Fishing & Rental Services, LLC | Delaware |
| Pioneer Global Holdings, Inc. | Delaware |
| Pioneer Latina Group SDAD, Ltda. | Panama |
| Pioneer Production Services, Inc. | Delaware |
| Pioneer Services Holdings, LLC | Delaware |
| Proveedora Internacional de Taladros S.A.S | Colombia |
| Seventy Seven Energy LLC | Delaware |
| Seventy Seven Land Company LLC | Oklahoma |
| Seventy Seven Operating LLC | Oklahoma |
| Superior QC, LLC | Delaware |
| Texair Aviation LLC | Delaware |
| UDT GP, LLC | Delaware |
| Ulterra Arabia LLC (Joint Venture) | Saudi Arabia |
| Ulterra Australia Pty Ltd | Australia |
| Ulterra Canada ULC | Alberta, Canada |
| Ulterra Drilling Europe LTD | United Kingdom |
| Ulterra Drilling Technologies Brazil LTDA | Brazil |
| Ulterra Drilling Technologies, L.P. | Texas |
| Ulterra Drilling Technologies, L.P. (Iraq Branch) | Iraq |
| Ulterra Drilling Technologies, S.R.L. | Argentina |
| Ulterra International S.A. | Ecuador |
| Ulterra International Subsidiaries, LLC | Texas |
| Ulterra GEC Ltd. | Cayman Islands |
| Ulterra GP Ltd. | Alberta, Canada |
| Ulterra Holdings, Inc. | Delaware |
| Ulterra Latin America LLC | Texas |
| Ulterra Latin America LLC (Colombia Branch) | Colombia |
| Ulterra, LP | Alberta, Canada |
| Ulterra Middle East LLC | Texas |
| Ulterra Muscat LLC | Oman |
| Ulterra Parent LLC | Delaware |
| Ulterra, S. de R.L. de C.V. | Mexico |
| Ulterra Ukraine LLC | Ukraine |
| Utechnology Services México S de RL de CV | Mexico |
| Warrior Rig Technologies Limited | British Columbia, Canada |
From Exhibit 21 of the 10-K for 2025. Companies must list their significant subsidiaries there and may leave out smaller ones, so this is the company’s own list, not every entity it owns.
Read from Patterson UTI Energy’s annual reports (10-K for 2025, 10-K for 2024, 10-K for 2023) and the financial data it files with the SEC, as of 2026-02-10. Every quotation is word for word from the filing linked beside it; how these pages are built and checked. The full record is in its company data sheet.