| 28901 | Totalfinaelf E&P USA Inc | Houston, TX 77024 | Oil & Gas Operator | Jul 2007 |
| 28902 | Toto Energy, LLC | Spring, TX 77380 | Oil & Gas Operator | Dec 2019 |
| 28903 | Totten Resources | | Oil Operator | Sep 2007 |
| 28904 | Touchstone Properties, Inc. | | Oil Operator | Mar 1988 |
| 28905 | Touchstone Resources USA, Inc. | Houston, TX 77002 | Oil & Gas Operator | Oct 2006 |
| 28906 | Touchstone Trading & Transportation Inc | | Oil Operator | Dec 2023 |
| 28907 | Tower Drilling Corporation | | Oil & Gas Operator | Dec 2021 |
| 28908 | Tower Energy Corporation | Sapulpa, OK 74067-0837 | Oil & Gas Operator | Mar 2015 |
| 28909 | Tower Oil & Gas Company, Inc. | Englewood, CO 80111 | Oil & Gas Operator | May 2001 |
| 28910 | Tower Resources Inc | Conroe, TX 77304 | Oil & Gas Operator | May 2024 |
| 28911 | Tower Wanda L Nations | Oklahoma City, OK 73123 | Oil & Gas Operator | Aug 1996 |
| 28912 | Town Of Aurora | East Aurora, NY 14052 | Gas Operator | Dec 2022 |
| 28913 | Town Of Chautauqua | Mayville, NY 14757 | Gas Operator | Dec 2022 |
| 28914 | Town Of Newstead | Akron, NY 14001 | Gas Operator | Dec 2022 |
| 28915 | Town Of West Seneca | West Seneca, NY 14224 | Gas Operator | Dec 2022 |
| 28916 | Town Oil Company | Paola, KS 66071 | Oil & Gas Operator | Dec 2023 |
| 28917 | Towne Exploration Company LP | | Oil & Gas Operator | Mar 2024 |
| 28918 | Townes, Don | Clarksville, TX 75426 | Oil & Gas Operator | May 2024 |
| 28919 | Townsend Company | Abilene, TX 79608 | Oil & Gas Operator | Dec 2021 |
| 28920 | Townsend Operating Company | | Oil & Gas Operator | Jan 2008 |
| 28921 | Townsend V E | Ada, OK 74820 | Oil & Gas Operator | May 2013 |
| 28922 | Townsend, R. F. Trustee | Dallas, TX 75201 | Oil & Gas Operator | Dec 1994 |
| 28923 | TPC Exploration, LLC | May, TX 76857 | Oil & Gas Operator | May 2024 |
| 28924 | TPC Operating Inc. | | Oil & Gas Operator | Feb 2024 |
| 28925 | Tpet Management Inc. | Dallas, TX 75204 | Oil & Gas Operator | Dec 1997 |
| 28926 | Tpet, Inc. | Dallas, TX 75204 | Oil & Gas Operator | Mar 2008 |
| 28927 | TR Crude LLC | Independence, KS 67301 | Oil Operator | Oct 2023 |
| 28928 | TR Offshore, LLC | Corpus Chrsti, TX 78413 | Oil & Gas Operator | May 2024 |
| 28929 | TR Operating LLC | Graham, TX 76450 | Oil Operator | Mar 2024 |
| 28930 | Trace Energy Management Inc | Weatherford, TX 76086 | Oil & Gas Operator | May 2024 |
| 28931 | Trace Oil & Gas LP | Cement, OK 73017-0563 | Oil & Gas Operator | Feb 2024 |
| 28932 | Trace Operating Co & R Hudson | Pawhuska, OK 74056 | Oil & Gas Operator | Aug 2013 |
| 28933 | Trace Operating, LLC | Fort Worth, TX 76116 | Oil & Gas Operator | May 2024 |
| 28934 | Trace Operators, Inc. | | Oil & Gas Operator | Nov 2023 |
| 28935 | Tracer Energy, Inc. | Graham, TX 76450 | Oil & Gas Operator | Nov 1998 |
| 28936 | Tracer Operating, Inc. | Graham, TX 76450 | Oil & Gas Operator | May 2024 |
| 28937 | Trachtenberg Daniel S | Houston, TX 77071-2608 | Oil Operator | Jan 2024 |
| 28938 | Tracker Mineral | Clyde, TX 79510 | Oil & Gas Operator | May 2024 |
| 28939 | Tracker Oil & Gas, Inc. | Bastrop, TX 78602 | Oil & Gas Operator | May 2024 |
| 28940 | Tracker Resource Dev III, LLC | Englewood, CO 80112 | Oil & Gas Operator | Jul 2021 |
| 28941 | Tracker Resource Development II, LLC | | Oil & Gas Operator | Feb 2011 |
| 28942 | Trackstar Energies LLC | Colorado Springs, CO 80919 | Oil Operator | Mar 2023 |
| 28943 | Tracy & Associates Inc | Ada, OK 74820 | Oil & Gas Operator | Apr 2014 |
| 28944 | Tracy Co. | Rockdale, TX 76567 | Oil & Gas Operator | Mar 2022 |
| 28945 | Tracy Operating Co., LLC | Rockdale, TX 76567 | Oil & Gas Operator | May 2024 |
| 28946 | Tracy Production | Lindale, TX 75771 | Oil & Gas Operator | May 2024 |
| 28947 | Trade & Development Corp | | Oil & Gas Operator | Nov 1996 |
| 28948 | Tradestar Energy, Inc. | Hot Springs, AR 71913 | Oil Operator | Feb 2021 |
| 28949 | Tradition Resources LLC | Houston, TX 77002 | Oil & Gas Operator | Jan 2014 |
| 28950 | Tradition Resources Oper, LLC | Houston, TX 77002 | Oil & Gas Operator | Jul 2017 |
| 28951 | Trafalgar House Oil & Gas Inc. | Houston, TX 77002-7346 | Oil & Gas Operator | Jan 1992 |
| 28952 | Trahan Petroleum Inc | | Oil Operator | Dec 2023 |
| 28953 | Trail Mountain, Inc. | Artesia, NM 88210 | Oil & Gas Operator | Jan 2016 |
| 28954 | Trail Ridge Energy Partners, LLC | Grapevine, TX 76051 | Oil & Gas Operator | Feb 2024 |
| 28955 | Trail Ridge Energy PRTNS II LLC | Grapevine, TX 76051 | Oil & Gas Operator | Jun 2017 |
| 28956 | Trailblazer Energy LLC | Plano, TX 75075 | Oil & Gas Operator | Feb 2024 |
| 28957 | Trailblazer Energy Resources, LLC | Tulsa, OK 74136 | Oil & Gas Operator | May 2024 |
| 28958 | Trailhead Exploration LLC | | Oil & Gas Operator | Feb 2024 |
| 28959 | Traillour Oil Co. | | Oil & Gas Operator | Mar 1990 |
| 28960 | Trans Atlantic Ener Corp | Caldwell, OH 43724 | Oil & Gas Operator | Dec 1993 |
| 28961 | Trans Atlantic Resource Corp | Tulsa, OK 74136-5709 | Oil & Gas Operator | Nov 1998 |
| 28962 | Trans Energy, Inc. | St. Marys, WV 26170 | Oil & Gas Operator | Dec 2017 |
| 28963 | Trans Ocean Oil, Inc. | Houston, TX 77252 | Oil & Gas Operator | Oct 1980 |
| 28964 | Trans Oil Marketing LLC | Abilene, TX 79602 | Oil Operator | Aug 2023 |
| 28965 | Trans Pacific Oi | | Oil & Gas Operator | May 1995 |
| 28966 | Trans Pacific Oil Corporation | Wichita, KS 67202 | Oil & Gas Operator | Feb 2024 |
| 28967 | Trans Resource D | | Oil Operator | May 1991 |
| 28968 | Trans Terra Corp., International | Amarillo, TX 79159 | Oil & Gas Operator | Feb 2009 |
| 28969 | Trans Texas Minerals Company | Austin, TX 78714 | Oil & Gas Operator | Aug 1999 |
| 28970 | Trans-Gulf Petroleum Corp | | Oil & Gas Operator | Sep 1999 |
| 28971 | Trans-Pacific Oil & Gas Inc. | | Oil & Gas Operator | Mar 1982 |
| 28972 | Trans-Pecos Resources, Inc. | Houston, TX 77056 | Oil & Gas Operator | May 2024 |
| 28973 | Trans-Sabine Pipeline Corp | | Oil Operator | Mar 2009 |
| 28974 | Trans-Texas Energy Group LLC | Mineral Wells, TX 76068 | Oil & Gas Operator | Jul 2015 |
| 28975 | Trans-Western Expl. Inc. | Dallas, TX 75240 | Oil & Gas Operator | Mar 1993 |
| 28976 | Trans-Western Operating Company | Golden, CO 80402 | Oil Operator | Dec 2023 |
| 28977 | Transamerica Energy Corp. | Atlanta, GA 30356 | Oil & Gas Operator | May 2024 |
| 28978 | Transamerica Oil | | Oil & Gas Operator | Sep 1992 |
| 28979 | Transamerica Oil Corporation | Hutchinson, KS 67504 | Gas Operator | Jan 2024 |
| 28980 | Transamerican Energy/Toce Oil | | Oil & Gas Operator | Dec 1994 |
| 28981 | Transamerican Natural Gas Corp. | Houston, TX 77032 | Oil & Gas Operator | Aug 2000 |
| 28982 | Transamerican-Swepi-Toce Oil | | Oil & Gas Operator | Apr 1990 |
| 28983 | Transatlantic Petr (USA) Corp. | Dallas, TX 75206 | Oil & Gas Operator | May 2024 |
| 28984 | Transco Exploration Company | | Oil & Gas Operator | Jul 1989 |
| 28985 | Transco Oil & Gas Inc. | | Gas Operator | Dec 1992 |
| 28986 | Transcoastal Operating LLC | Dallas, TX 75252-5646 | Oil & Gas Operator | Mar 2015 |
| 28987 | Transcontinental Company | Fort Worth, TX 76161-1804 | Oil & Gas Operator | Feb 2024 |
| 28988 | Transcontinental Gas P/L Corp. | | Oil & Gas Operator | Dec 2009 |
| 28989 | Transcontinental Gas Pipeline Co LLC | | Oil Operator | Jan 2024 |
| 28990 | Transcontinental Minerals Corp. | The Woodlands, TX 77380 | Oil & Gas Operator | Dec 2008 |
| 28991 | Transcontinental Oil & Gas Inc | Aurora, OH 44202 | Oil & Gas Operator | Dec 2023 |
| 28992 | Transcontinental Oil Corp. | | Oil & Gas Operator | Sep 1985 |
| 28993 | Transcontinental Shale L.L.C. | Austin, TX 78717 | Oil & Gas Operator | Feb 2016 |
| 28994 | Transfuel Resources Co | Houston, TX 77215 | Oil & Gas Operator | Aug 2013 |
| 28995 | Transglobe Oil & Gas Corporation | Littleton, CO 801222710 | Oil & Gas Operator | Dec 1999 |
| 28996 | Transhorizon Energy Inc | Cheyenne, WY 82003 | Oil & Gas Operator | Jul 2023 |
| 28997 | Transit Energy Inc | West Salem, OH 44287 | Oil & Gas Operator | Dec 2023 |
| 28998 | Transoil, Inc. | Oklahoma City, OK 73129 | Oil & Gas Operator | May 2024 |
| 28999 | Transok LLC | Oklahoma City, OK 73124-0300 | Oil & Gas Operator | Jul 2020 |
| 29000 | Transpac Petroleum Inc. | | Oil & Gas Operator | Dec 1995 |