| 28801 | TDT Production, Inc. | Capitola, CA 95010 | Oil & Gas Operator | Aug 2003 |
| 28802 | TDX Energy, LLC | Shreveport, LA 71101 | Oil & Gas Operator | Dec 2024 |
| 28803 | Te-Pe Oil & Gas | | Oil & Gas Operator | Mar 2025 |
| 28804 | Te-Ray Energy, Inc. | Oklahoma City, OK 73108 | Oil & Gas Operator | Apr 2025 |
| 28805 | Te-Ray Resources, Inc. | Oklahoma City, OK 73108 | Oil & Gas Operator | Mar 2015 |
| 28806 | Te-Ray Resources, LLC | Oklahoma City, OK 73142 | Oil & Gas Operator | Jul 2025 |
| 28807 | Teaco | Snyder, TX 79550 | Oil & Gas Operator | Jan 1998 |
| 28808 | Teafatiller Limuel & Rita | Marietta, OK 73448-0321 | Oil & Gas Operator | Feb 2002 |
| 28809 | Teagarden David W | Glenford, OH 43739 | Oil & Gas Operator | Dec 2020 |
| 28810 | Teague Operating Co. | Mabank, TX 75147 | Oil & Gas Operator | Jul 1995 |
| 28811 | Teague, J. V. & Robinson, E. W. | Olney, TX 76374 | Oil & Gas Operator | May 1996 |
| 28812 | Teakwood Operating LLC | Midland, TX 79701 | Oil & Gas Operator | Nov 2019 |
| 28813 | Teal Energy USA, Inc. | Houston, TX 77057 | Oil & Gas Operator | Jul 2025 |
| 28814 | Teal Exploration, LLC | Abilene, TX 79602 | Oil Operator | Jul 2025 |
| 28815 | Teal Operating, LLC | Dallas, TX 75225 | Oil & Gas Operator | Oct 2021 |
| 28816 | Teal Petroleum Co. | | Oil & Gas Operator | Sep 1978 |
| 28817 | Teale F William | Tulsa, OK 74136-1017 | Oil & Gas Operator | Jun 2000 |
| 28818 | Team Operating, L.L.C. | Pinehurst, TX 77362 | Oil & Gas Operator | Jul 2025 |
| 28819 | Teamco Operating LLC | Houston, TX 77042 | Oil & Gas Operator | Oct 2002 |
| 28820 | Teapot Oil & Refining Company | Billings, MT 59101 | Oil & Gas Operator | Mar 2012 |
| 28821 | Teavee Oil & Gas, Inc. | Charleston, WV 25301-0000 | Oil & Gas Operator | Dec 2021 |
| 28822 | Tebco Oil & Gas | | Oil & Gas Operator | Sep 1996 |
| 28823 | Tec Drilling Com | | Oil Operator | Feb 1982 |
| 28824 | Tec Resources, L.L.C. | Tulsa, OK 74128 | Oil & Gas Operator | May 2013 |
| 28825 | Tech American Re | | Oil Operator | Sep 1985 |
| 28826 | Tech Resources, Inc. | Georgetown, TX 78628 | Oil & Gas Operator | Dec 2001 |
| 28827 | Technical Energy Services, Inc. | Norman, OK 73070 | Oil & Gas Operator | Apr 2025 |
| 28828 | Technology & Engr. Careers Inc. | Houston, TX 77063 | Oil Operator | Dec 2017 |
| 28829 | Techsys Resources LLC | Houston, TX 77224 | Gas Operator | Aug 2015 |
| 28830 | Teco Oil & Gas, Inc. | Tampa, FL 33601 | Oil & Gas Operator | Nov 1997 |
| 28831 | Teco Operating Company | Athens, TX 75751 | Oil & Gas Operator | Jun 2001 |
| 28832 | Tecolote Energy Operating, LLC | Fort Worth, TX 76107 | Oil & Gas Operator | Jan 2024 |
| 28833 | Tecolote Petroleum Corp.,Inc. | Friendswood, TX 77546 | Oil & Gas Operator | Mar 2011 |
| 28834 | Tecpetrol Operating LLC | Houston, TX 77027 | Oil & Gas Operator | Dec 2015 |
| 28835 | Tecton Energy Operating LLC | | Oil Operator | Apr 2009 |
| 28836 | Ted Koble Operator | | Oil & Gas Operator | Nov 2007 |
| 28837 | Tedco | | Gas Operator | Nov 1988 |
| 28838 | Tedik Limited Partnership | Williamson, WV 25661-0000 | Gas Operator | Dec 2021 |
| 28839 | Tee Cee'S Inc | Drumright, OK 74030 | Oil & Gas Operator | May 2025 |
| 28840 | Tee Operating Company | | Oil & Gas Operator | Jun 1989 |
| 28841 | Teel 78 A | | Gas Operator | Dec 1980 |
| 28842 | Teepee Oil & Gas Inc | Yukon, OK 73085 | Oil Operator | Dec 2006 |
| 28843 | Teg Midcontinent, Inc. | Aurora, CO 80014 | Oil Operator | Jul 2013 |
| 28844 | Tega Operating Co. | Dallas, TX 75201 | Oil & Gas Operator | Nov 2012 |
| 28845 | Tehi Illinois, LLC | Olney, IL 62450 | Oil & Gas Operator | Feb 2019 |
| 28846 | Teichgraeber Oil | | Oil Operator | Nov 1995 |
| 28847 | Teichgraeber Oil Co. | | Oil Operator | Dec 1994 |
| 28848 | Teichgraeber Oil, Inc. | Eureka, KS 67045 | Oil & Gas Operator | Dec 2024 |
| 28849 | Tej Ventures | | Oil & Gas Operator | Dec 2002 |
| 28850 | Tejas Gas Corp | | Oil & Gas Operator | Dec 1974 |
| 28851 | Tejas Gas Pipeline Company | Houston, TX 77010 | Oil & Gas Operator | Apr 1998 |
| 28852 | Tejas Gas Pipeline, L.P. | Houston, TX 77002 | Oil & Gas Operator | Feb 2002 |
| 28853 | Tejas Jack Sales, Inc. | Big Lake, TX 76932 | Oil & Gas Operator | Jul 2025 |
| 28854 | Tejas Operating Company, Inc. | Houston, TX 77257 | Oil & Gas Operator | May 1995 |
| 28855 | Tejas Operating LLC | Houston, TX 77056 | Oil & Gas Operator | Jul 2025 |
| 28856 | Tejas Operators, Inc. | Midland, TX 79702 | Oil & Gas Operator | Aug 2003 |
| 28857 | Tejas Permian Operating, LLC | Midland, TX 79702 | Oil & Gas Operator | Jul 2025 |
| 28858 | Tejas Petroleum Resources, LLC | Aubrey, TX 76227 | Oil & Gas Operator | Jul 2025 |
| 28859 | Tejas Production Company | | Oil Operator | Nov 1979 |
| 28860 | Tejas Trucking, Inc. | Andrews, TX 79714 | Oil & Gas Operator | Jul 2025 |
| 28861 | Tejas Western Corp. | Granbury, TX 76048 | Oil & Gas Operator | Jul 2018 |
| 28862 | Tejones Operating Corporation | San Antonio, TX 78217 | Oil & Gas Operator | Jul 2025 |
| 28863 | Teke Production LLC | Houston, TX 77269 | Oil Operator | Jul 2025 |
| 28864 | Tekenergy, Inc. | Oklahoma City, OK 73112 | Oil & Gas Operator | Mar 2015 |
| 28865 | Tekna Synergy Corporation | Midland, TX 79702 | Oil & Gas Operator | Jul 2025 |
| 28866 | Teko Oil & Gas I | | Oil Operator | Aug 1992 |
| 28867 | Teleo Operating, LLC | Dallas, TX 75219 | Oil & Gas Operator | Apr 2009 |
| 28868 | Telesis Operating Co. | Fort Worth, TX 76116 | Oil & Gas Operator | Jul 2025 |
| 28869 | Telico Minerals, L.L.C. | | Oil & Gas Operator | Oct 2019 |
| 28870 | Tellurian Operating LLC | | Oil & Gas Operator | Jun 2024 |
| 28871 | Tellus Energy, LLC | | Oil & Gas Operator | Dec 2024 |
| 28872 | Tellus Operating Group, LLC | | Oil & Gas Operator | Apr 2025 |
| 28873 | Tema Oil And Gas Company | Houston, TX 77084 | Oil & Gas Operator | Jul 2025 |
| 28874 | Tema Oil And Gas, LLC | Houston, TX 77040 | Oil & Gas Operator | Apr 2000 |
| 28875 | Tema Oil Company | Amarillo, TX 79101 | Oil & Gas Operator | Jun 2009 |
| 28876 | Temagami Oil & Gas LTD | | Oil & Gas Operator | May 2007 |
| 28877 | Tember Oil Company | Holliday, TX 76366 | Oil & Gas Operator | Jul 2025 |
| 28878 | Temblor Petroleum Co. LLC | | Oil & Gas Operator | Apr 2025 |
| 28879 | Temescal Resources LLC | | Oil & Gas Operator | May 2025 |
| 28880 | Temex Energy, Inc. | Oklahoma City, OK 73101 | Oil & Gas Operator | Feb 2002 |
| 28881 | Tempel Contracting, Inc. | Joplin, MT 59531 | Gas Operator | Feb 2025 |
| 28882 | Tempest Energy Resources, LP | Houston, TX 77251 | Oil & Gas Operator | Jun 2013 |
| 28883 | Tempest Oil Company, Inc. | | Oil & Gas Operator | Jul 1978 |
| 28884 | Templar Operating LLC | Oklahoma City, OK 73142 | Oil & Gas Operator | Apr 2025 |
| 28885 | Temple Oil & Gas Co | Crooksville, OH 43731 | Oil & Gas Operator | Dec 2024 |
| 28886 | Temple Oil Co | | Oil & Gas Operator | Oct 1992 |
| 28887 | Temple Resources LLC | | Oil Operator | Apr 2025 |
| 28888 | Templeton Energy Inc | | Oil & Gas Operator | Jul 1987 |
| 28889 | Templeton Oil, Inc. | Houston, TX 77002 | Oil & Gas Operator | Nov 1994 |
| 28890 | Tempo Energy, Inc. | Midland, TX 79702 | Oil & Gas Operator | Jul 2025 |
| 28891 | Tempo Resources GP, LLC | Mineral Wells, TX 76068 | Oil & Gas Operator | Apr 2013 |
| 28892 | Ten A Coal Company | Bridgeport, WV 26330 | Oil & Gas Operator | Dec 2020 |
| 28893 | Ten Grand Energy Company Inc | Nachogdoches, TX 75963-1880 | Oil Operator | Mar 2011 |
| 28894 | Tenaska Res LLC | Canonsburg, PA 15317 | Gas Operator | May 2020 |
| 28895 | Tend Oil Inc. | Tyler, TX 75703 | Oil & Gas Operator | Jul 1995 |
| 28896 | Tender Equity Corporation | Marietta, OH 45750 | Oil & Gas Operator | Dec 2007 |
| 28897 | Tenex Corporation | Houston, TX 77227 | Oil & Gas Operator | Dec 2007 |
| 28898 | Tenex Oil Corpor | | Oil Operator | May 1991 |
| 28899 | Tenexco Inc | Oakbrook Terrace, IL 60181 | Gas Operator | Dec 1998 |
| 28900 | Tengasco, Inc. | Houston, TX 77063 | Oil & Gas Operator | Apr 2024 |