Exhibit 21.1
Subsidiaries of the Registrant
Entity | State/Country |
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 (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 (BVI) Limited | British Virgin Islands |
Patterson-UTI International Holdings, Inc. | Delaware |
Patterson-UTI International Holdings (Netherlands) One B.V. | The Netherlands |
Patterson-UTI International Holdings (Netherlands) Two B.V. | The Netherlands |
Patterson-UTI International (India) B.V. | The Netherlands |
Patterson-UTI International (Kuwait) Limited | British Virgin Islands |
Patterson-UTI International (Netherlands) B.V. | The Netherlands |
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, 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, 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 |
Warrior Rig Technologies US LLC | Delaware |
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