| 29001 | Tdot Oil, Inc. | Sedan, KS 67361 | Oil Operator | Jan 2025 |
| 29002 | TDR Construction, Inc. | Wellsville, KS 66092 | Oil Operator | Jan 2025 |
| 29003 | TDT Production, Inc. | Capitola, CA 95010 | Oil & Gas Operator | Aug 2003 |
| 29004 | TDX Energy, LLC | Shreveport, LA 71101 | Oil & Gas Operator | Dec 2024 |
| 29005 | Te-Pe Oil & Gas | | Oil & Gas Operator | Jan 2025 |
| 29006 | Te-Ray Energy, Inc. | Oklahoma City, OK 73108 | Oil & Gas Operator | Feb 2025 |
| 29007 | Te-Ray Resources, Inc. | Oklahoma City, OK 73108 | Oil & Gas Operator | Mar 2015 |
| 29008 | Te-Ray Resources, LLC | Oklahoma City, OK 73142 | Oil & Gas Operator | May 2025 |
| 29009 | Teaco | Snyder, TX 79550 | Oil & Gas Operator | Jan 1998 |
| 29010 | Teafatiller Limuel & Rita | Marietta, OK 73448-0321 | Oil & Gas Operator | Feb 2002 |
| 29011 | Teagarden David W | Glenford, OH 43739 | Oil & Gas Operator | Dec 2020 |
| 29012 | Teague Operating Co. | Mabank, TX 75147 | Oil & Gas Operator | Jul 1995 |
| 29013 | Teague, J. V. & Robinson, E. W. | Olney, TX 76374 | Oil & Gas Operator | May 1996 |
| 29014 | Teakwood Operating LLC | Midland, TX 79701 | Oil & Gas Operator | Nov 2019 |
| 29015 | Teal Energy USA, Inc. | Houston, TX 77057 | Oil & Gas Operator | May 2025 |
| 29016 | Teal Exploration, LLC | Abilene, TX 79602 | Oil Operator | May 2025 |
| 29017 | Teal Operating, LLC | Dallas, TX 75225 | Oil & Gas Operator | Oct 2021 |
| 29018 | Teal Petroleum Co. | | Oil & Gas Operator | Sep 1978 |
| 29019 | Teale F William | Tulsa, OK 74136-1017 | Oil & Gas Operator | Jun 2000 |
| 29020 | Team Operating, L.L.C. | Pinehurst, TX 77362 | Oil & Gas Operator | May 2025 |
| 29021 | Teamco Operating LLC | Houston, TX 77042 | Oil & Gas Operator | Oct 2002 |
| 29022 | Teapot Oil & Refining Company | Billings, MT 59101 | Oil & Gas Operator | Mar 2012 |
| 29023 | Teavee Oil & Gas, Inc. | Charleston, WV 25301-0000 | Oil & Gas Operator | Dec 2021 |
| 29024 | Tebco Oil & Gas | | Oil & Gas Operator | Sep 1996 |
| 29025 | Tec Drilling Com | | Oil Operator | Feb 1982 |
| 29026 | Tec Resources, L.L.C. | Tulsa, OK 74128 | Oil & Gas Operator | May 2013 |
| 29027 | Tech American Re | | Oil Operator | Sep 1985 |
| 29028 | Tech Resources, Inc. | Georgetown, TX 78628 | Oil & Gas Operator | Dec 2001 |
| 29029 | Technical Energy Services, Inc. | Norman, OK 73070 | Oil & Gas Operator | Feb 2025 |
| 29030 | Technology & Engr. Careers Inc. | Houston, TX 77063 | Oil Operator | Dec 2017 |
| 29031 | Techsys Resources LLC | Houston, TX 77224 | Gas Operator | Aug 2015 |
| 29032 | Teco Oil & Gas, Inc. | Tampa, FL 33601 | Oil & Gas Operator | Nov 1997 |
| 29033 | Teco Operating Company | Athens, TX 75751 | Oil & Gas Operator | Jun 2001 |
| 29034 | Tecolote Energy Operating, LLC | Fort Worth, TX 76107 | Oil & Gas Operator | Jan 2024 |
| 29035 | Tecolote Petroleum Corp.,Inc. | Friendswood, TX 77546 | Oil & Gas Operator | Mar 2011 |
| 29036 | Tecpetrol Operating LLC | Houston, TX 77027 | Oil & Gas Operator | Dec 2015 |
| 29037 | Tecton Energy Operating LLC | | Oil Operator | Apr 2009 |
| 29038 | Ted Koble Operator | | Oil & Gas Operator | Nov 2007 |
| 29039 | Tedco | | Gas Operator | Nov 1988 |
| 29040 | Tedik Limited Partnership | Williamson, WV 25661-0000 | Gas Operator | Dec 2021 |
| 29041 | Tee Cee'S Inc | Drumright, OK 74030 | Oil & Gas Operator | Jan 2025 |
| 29042 | Tee Operating Company | | Oil & Gas Operator | Jun 1989 |
| 29043 | Teel 78 A | | Gas Operator | Dec 1980 |
| 29044 | Teepee Oil & Gas Inc | Yukon, OK 73085 | Oil Operator | Dec 2006 |
| 29045 | Teg Midcontinent, Inc. | Aurora, CO 80014 | Oil Operator | Jul 2013 |
| 29046 | Tega Operating Co. | Dallas, TX 75201 | Oil & Gas Operator | Nov 2012 |
| 29047 | Tehi Illinois, LLC | Olney, IL 62450 | Oil & Gas Operator | Feb 2019 |
| 29048 | Teichgraeber Oil | | Oil Operator | Nov 1995 |
| 29049 | Teichgraeber Oil Co. | | Oil Operator | Dec 1994 |
| 29050 | Teichgraeber Oil, Inc. | Eureka, KS 67045 | Oil & Gas Operator | Dec 2024 |
| 29051 | Tej Ventures | | Oil & Gas Operator | Dec 2002 |
| 29052 | Tejas Gas Corp | | Oil & Gas Operator | Dec 1974 |
| 29053 | Tejas Gas Pipeline Company | Houston, TX 77010 | Oil & Gas Operator | Apr 1998 |
| 29054 | Tejas Gas Pipeline, L.P. | Houston, TX 77002 | Oil & Gas Operator | Feb 2002 |
| 29055 | Tejas Jack Sales, Inc. | Big Lake, TX 76932 | Oil & Gas Operator | May 2025 |
| 29056 | Tejas Operating Company, Inc. | Houston, TX 77257 | Oil & Gas Operator | May 1995 |
| 29057 | Tejas Operating LLC | Houston, TX 77056 | Oil & Gas Operator | May 2025 |
| 29058 | Tejas Operators, Inc. | Midland, TX 79702 | Oil & Gas Operator | Aug 2003 |
| 29059 | Tejas Permian Operating, LLC | Midland, TX 79702 | Oil & Gas Operator | May 2025 |
| 29060 | Tejas Petroleum Resources, LLC | Aubrey, TX 76227 | Oil & Gas Operator | May 2025 |
| 29061 | Tejas Production Company | | Oil Operator | Nov 1979 |
| 29062 | Tejas Trucking, Inc. | Andrews, TX 79714 | Oil & Gas Operator | May 2025 |
| 29063 | Tejas Western Corp. | Granbury, TX 76048 | Oil & Gas Operator | Jul 2018 |
| 29064 | Tejones Operating Corporation | San Antonio, TX 78217 | Oil & Gas Operator | May 2025 |
| 29065 | Teke Production LLC | Houston, TX 77269 | Oil Operator | May 2025 |
| 29066 | Tekenergy, Inc. | Oklahoma City, OK 73112 | Oil & Gas Operator | Mar 2015 |
| 29067 | Tekna Synergy Corporation | Midland, TX 79702 | Oil & Gas Operator | May 2025 |
| 29068 | Teko Oil & Gas I | | Oil Operator | Aug 1992 |
| 29069 | Teleo Operating, LLC | Dallas, TX 75219 | Oil & Gas Operator | Apr 2009 |
| 29070 | Telesis Operating Co. | Fort Worth, TX 76116 | Oil & Gas Operator | May 2025 |
| 29071 | Telico Minerals, L.L.C. | | Oil & Gas Operator | Oct 2019 |
| 29072 | Tellurian Operating LLC | | Oil & Gas Operator | Jun 2024 |
| 29073 | Tellus Energy, LLC | | Oil & Gas Operator | Dec 2024 |
| 29074 | Tellus Operating Group, LLC | | Oil & Gas Operator | Mar 2025 |
| 29075 | Tema Oil And Gas Company | Houston, TX 77084 | Oil & Gas Operator | May 2025 |
| 29076 | Tema Oil And Gas, LLC | Houston, TX 77040 | Oil & Gas Operator | Apr 2000 |
| 29077 | Tema Oil Company | Amarillo, TX 79101 | Oil & Gas Operator | Jun 2009 |
| 29078 | Temagami Oil & Gas LTD | | Oil & Gas Operator | May 2007 |
| 29079 | Tember Oil Company | Holliday, TX 76366 | Oil & Gas Operator | May 2025 |
| 29080 | Temblor Petroleum Co. LLC | | Oil & Gas Operator | Feb 2025 |
| 29081 | Temescal Resources LLC | | Oil & Gas Operator | Mar 2025 |
| 29082 | Temex Energy, Inc. | Oklahoma City, OK 73101 | Oil & Gas Operator | Feb 2002 |
| 29083 | Tempel Contracting, Inc. | Joplin, MT 59531 | Gas Operator | Feb 2025 |
| 29084 | Tempest Energy Resources, LP | Houston, TX 77251 | Oil & Gas Operator | Jun 2013 |
| 29085 | Tempest Oil Company, Inc. | | Oil & Gas Operator | Jul 1978 |
| 29086 | Templar Operating LLC | Oklahoma City, OK 73142 | Oil & Gas Operator | Feb 2025 |
| 29087 | Temple Oil & Gas Co | Crooksville, OH 43731 | Oil & Gas Operator | Dec 2023 |
| 29088 | Temple Oil Co | | Oil & Gas Operator | Oct 1992 |
| 29089 | Templeton Energy Inc | | Oil & Gas Operator | Jul 1987 |
| 29090 | Templeton Oil, Inc. | Houston, TX 77002 | Oil & Gas Operator | Nov 1994 |
| 29091 | Tempo Energy, Inc. | Midland, TX 79702 | Oil & Gas Operator | May 2025 |
| 29092 | Tempo Resources GP, LLC | Mineral Wells, TX 76068 | Oil & Gas Operator | Apr 2013 |
| 29093 | Ten A Coal Company | Bridgeport, WV 26330 | Oil & Gas Operator | Dec 2020 |
| 29094 | Ten Grand Energy Company Inc | Nachogdoches, TX 75963-1880 | Oil Operator | Mar 2011 |
| 29095 | Tenaska Res LLC | Canonsburg, PA 15317 | Gas Operator | May 2020 |
| 29096 | Tend Oil Inc. | Tyler, TX 75703 | Oil & Gas Operator | Jul 1995 |
| 29097 | Tender Equity Corporation | Marietta, OH 45750 | Oil & Gas Operator | Dec 2007 |
| 29098 | Tenex Corporation | Houston, TX 77227 | Oil & Gas Operator | Dec 2007 |
| 29099 | Tenex Oil Corpor | | Oil Operator | May 1991 |
| 29100 | Tenexco Inc | Oakbrook Terrace, IL 60181 | Gas Operator | Dec 1998 |