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 |
|
|