| | |
Subsidiary
| | State of Incorporation or Organization
|
ALPHA Transmission Company | | Oklahoma |
Blue Moon Holdings, L.L.C. | | Delaware |
Compañia Nacional de Gas S.A. de C.V. | | Mexico |
Construcciones, Instalaciones y Asesorías, S.A. de C.V. | | Mexico |
Energia Estrella de Sur, S.A. de C.V. | | Mexico |
Fox Plant, L.L.C. | | Delaware |
Gas Servicios Del Norte de Mexico S. De R.L. De C.V. | | Mexico |
Kansas Gas Marketing Company | | Kansas |
Kansas Gas Service Company | | Kansas |
Kansas Gas Supply Corporation | | Delaware |
Materiales y Aparatos, S.A. de C.V. (48%) | | Mexico |
Mercado Gas Services Inc. | | Delaware |
Mid Continent Market Center, Inc. | | Kansas |
Oasis Acquisition Corporation | | California |
Oklahoma Natural Energy Services Company | | Oklahoma |
OkTex Pipeline Company | | Delaware |
ONEOK Bushton Processing, Inc. | | Delaware |
ONEOK Energy International, Inc. | | Delaware |
ONEOK Energy Marketing and Trading Company, II | | Delaware |
ONEOK Energy Marketing and Trading Company, L.P. | | Texas |
ONEOK Energy Marketing Company | | Oklahoma |
ONEOK Energy Marketing Holdings, Inc. | | Oklahoma |
ONEOK Energy Resources Company | | Delaware |
ONEOK Energy Resources Holdings, Inc. | | Delaware |
ONEOK Energy Services Canada, Ltd. | | Canada |
ONEOK Field Services Company | | Oklahoma |
ONEOK Field Services Holdings, Inc. | | Oklahoma |
ONEOK Gas Gathering, L.L.C. | | Oklahoma |
ONEOK Gas Processing, L.L.C. | | Oklahoma |
ONEOK Gas Storage Holdings, Inc. | | Delaware |
ONEOK Gas Storage, L.L.C. | | Oklahoma |
ONEOK Gas Transportation, L.L.C. | | Oklahoma |
ONEOK International, Inc. | | Delaware |
ONEOK International Investments, Inc. | | Delaware |
ONEOK Kansas Company | | Kansas |
ONEOK Leasing Company | | Delaware |
ONEOK Midstream Gas Supply, L.L.C. | | Oklahoma |
ONEOK NGL Marketing, L.P. | | Texas |
ONEOK Palo Duro Pipeline Company, Inc. | | Delaware |
ONEOK Parking Company | | Delaware |
| | |
ONEOK Propane Company | | Delaware |
ONEOK Sayre Storage Company | | Delaware |
ONEOK Services Company | | Oklahoma |
ONEOK Technology Company | | Delaware |
ONEOK Texas Energy Holdings, LLC | | Delaware |
ONEOK Texas Energy Resources, L.P. | | Delaware |
ONEOK Texas Field Services, L.P. | | Texas |
ONEOK Texas Gas Storage, L.P. | | Texas |
ONEOK Texas Resources, Inc. | | Delaware |
ONEOK WesTex Gas Pipeline, Inc. | | Oklahoma |
ONEOK WesTex Transmission, L.P. | | Delaware |
ONEOK Transmission Company | | Delaware |
Potato Hills Gas Gathering System (joint venture) | | Oklahoma |
Salart, S.A. de C.V. | | Mexico |
Servicios Corporativos Phenix, S.C. | | Mexico |
Sycamore Gas System (general partnership) | | Oklahoma |
TGS Rio, L.L.C. | | Delaware |
In addition to the interests of the Company in the Subsidiaries set forth above, the Company also directly or indirectly holds various interests in oil and gas wells and related projects and holds various undivided interests in gasoline plants and other facilities relating to the oil and gas business and holds minority interests in various other entities and ventures.
