| 28201 | Teco Oil & Gas, Inc. | Tampa, FL 33601 | Oil & Gas Operator | Nov 1997 |
| 28202 | Teco Operating Company | Athens, TX 75751 | Oil & Gas Operator | Jun 2001 |
| 28203 | Tecolote Energy Operating, LLC | Fort Worth, TX 76107 | Oil & Gas Operator | Jan 2024 |
| 28204 | Tecolote Petroleum Corp.,Inc. | Friendswood, TX 77546 | Oil & Gas Operator | Mar 2011 |
| 28205 | Tecpetrol Operating LLC | Houston, TX 77027 | Oil & Gas Operator | Dec 2015 |
| 28206 | Tecton Energy Operating LLC | | Oil Operator | Apr 2009 |
| 28207 | Ted Koble Operator | | Oil & Gas Operator | Nov 2007 |
| 28208 | Tedco | | Gas Operator | Nov 1988 |
| 28209 | Tee Cee'S Inc | Drumright, OK 74030 | Oil & Gas Operator | Mar 2026 |
| 28210 | Tee Operating Company | | Oil & Gas Operator | Jun 1989 |
| 28211 | Teel 78 A | | Gas Operator | Dec 1980 |
| 28212 | Teepee Oil & Gas Inc | Yukon, OK 73085 | Oil Operator | Dec 2006 |
| 28213 | Teg Midcontinent, Inc. | Aurora, CO 80014 | Oil Operator | Jul 2013 |
| 28214 | Tega Operating Co. | Dallas, TX 75201 | Oil & Gas Operator | Nov 2012 |
| 28215 | Tehi Illinois, LLC | Olney, IL 62450 | Oil & Gas Operator | Feb 2019 |
| 28216 | Teichgraeber Oil | | Oil Operator | Nov 1995 |
| 28217 | Teichgraeber Oil Co. | | Oil Operator | Dec 1994 |
| 28218 | Teichgraeber Oil, Inc. | Eureka, KS 67045 | Oil & Gas Operator | Dec 2024 |
| 28219 | Tej Ventures | | Oil & Gas Operator | Dec 2002 |
| 28220 | Tejas Gas Pipeline Company | Houston, TX 77010 | Oil & Gas Operator | Apr 1998 |
| 28221 | Tejas Gas Pipeline, L.P. | Houston, TX 77002 | Oil & Gas Operator | Feb 2002 |
| 28222 | Tejas Jack Sales, Inc. | Big Lake, TX 76932 | Oil & Gas Operator | May 2026 |
| 28223 | Tejas Operating Company, Inc. | Houston, TX 77257 | Oil & Gas Operator | May 1995 |
| 28224 | Tejas Operating LLC | Houston, TX 77056 | Oil & Gas Operator | May 2026 |
| 28225 | Tejas Operators, Inc. | Midland, TX 79702 | Oil & Gas Operator | Aug 2003 |
| 28226 | Tejas Permian Operating, LLC | Midland, TX 79702 | Oil & Gas Operator | May 2026 |
| 28227 | Tejas Petroleum Resources, LLC | Aubrey, TX 76227 | Oil & Gas Operator | May 2026 |
| 28228 | Tejas Production Company | | Oil Operator | Nov 1979 |
| 28229 | Tejas Trucking, Inc. | Andrews, TX 79714 | Oil & Gas Operator | May 2026 |
| 28230 | Tejas Western Corp. | Granbury, TX 76048 | Oil & Gas Operator | Jul 2018 |
| 28231 | Tejones Operating Corporation | San Antonio, TX 78217 | Oil & Gas Operator | May 2026 |
| 28232 | Teke Production LLC | Houston, TX 77269 | Oil Operator | May 2026 |
| 28233 | Tekenergy Inc | Oklahoma City, OK 73112 | Oil & Gas Operator | Mar 2015 |
| 28234 | Tekna Synergy Corporation | Midland, TX 79702 | Oil & Gas Operator | May 2026 |
| 28235 | Teko Oil & Gas I | | Oil Operator | Aug 1992 |
| 28236 | Teleo Operating, LLC | Dallas, TX 75219 | Oil & Gas Operator | Apr 2009 |
| 28237 | Telesis Operating Co. | Fort Worth, TX 76116 | Oil & Gas Operator | May 2026 |
| 28238 | Telico Minerals, L.L.C. | | Oil & Gas Operator | Oct 2019 |
| 28239 | Tellurian Operating LLC | | Oil & Gas Operator | Jun 2024 |
| 28240 | Tellus Energy, LLC | | Oil & Gas Operator | Dec 2024 |
| 28241 | Tellus Operating Group, LLC | | Oil & Gas Operator | Mar 2026 |
| 28242 | Tema Oil And Gas Company | Houston, TX 77084 | Oil & Gas Operator | May 2026 |
| 28243 | Tema Oil And Gas, LLC | Houston, TX 77040 | Oil & Gas Operator | Apr 2000 |
| 28244 | Tema Oil Company | Amarillo, TX 79101 | Oil & Gas Operator | Jun 2009 |
| 28245 | Temagami Oil & Gas LTD | | Oil & Gas Operator | May 2007 |
| 28246 | Tember Oil Company | Holliday, TX 76366 | Oil & Gas Operator | May 2026 |
| 28247 | Temblor Petroleum Co. LLC | | Oil & Gas Operator | Dec 2025 |
| 28248 | Temescal Resources LLC | | Oil & Gas Operator | Mar 2026 |
| 28249 | Temex Energy Inc | Oklahoma City, OK 73101 | Oil & Gas Operator | Feb 2002 |
| 28250 | Tempest Energy Resources, LP | Houston, TX 77251 | Oil & Gas Operator | Jun 2013 |
| 28251 | Tempest Oil Company, Inc. | | Oil & Gas Operator | Jul 1978 |
| 28252 | Templar Operating LLC | Oklahoma City, OK 73142 | Oil & Gas Operator | Feb 2026 |
| 28253 | Temple Oil & Gas Co | Crooksville, OH 43731 | Oil & Gas Operator | Dec 2024 |
| 28254 | Temple Oil Co | | Oil & Gas Operator | Oct 1992 |
| 28255 | Templeton Energy Inc | | Oil & Gas Operator | Jul 1987 |
| 28256 | Templeton Oil, Inc. | Houston, TX 77002 | Oil & Gas Operator | Nov 1994 |
| 28257 | Tempo Energy, Inc. | Midland, TX 79702 | Oil & Gas Operator | May 2026 |
| 28258 | Tempo Resources GP, LLC | Mineral Wells, TX 76068 | Oil & Gas Operator | Apr 2013 |
| 28259 | Ten A Coal Company | Bridgeport, WV 26330 | Oil & Gas Operator | Dec 2020 |
| 28260 | Ten Grand Energy Company Inc | Nachogdoches, TX 75963-1880 | Oil Operator | Mar 2011 |
| 28261 | Tenaska Res LLC | Canonsburg, PA 15317 | Gas Operator | May 2020 |
| 28262 | Tend Oil Inc. | Tyler, TX 75703 | Oil & Gas Operator | Jul 1995 |
| 28263 | Tender Equity Corporation | Marietta, OH 45750 | Oil & Gas Operator | Dec 2007 |
| 28264 | Tenex Corporation | Houston, TX 77227 | Oil & Gas Operator | Dec 2007 |
| 28265 | Tenex Oil Corpor | | Oil Operator | May 1991 |
| 28266 | Tenexco Inc | Oakbrook Terrace, IL 60181 | Gas Operator | Dec 1998 |
| 28267 | Tengasco, Inc. | Houston, TX 77063 | Oil & Gas Operator | Jan 2026 |
| 28268 | Tenison Oil Comp | | Oil Operator | Jan 1993 |
| 28269 | Tenison Oil Company | Abilene, TX 79605 | Oil & Gas Operator | Feb 2026 |
| 28270 | Tenk, Lawrence O. | Ottawa, KS 66067 | Oil & Gas Operator | Oct 1998 |
| 28271 | Tenmile Land Limited Liability Company | Bridgeport, WV 26330 | Oil & Gas Operator | Dec 2021 |
| 28272 | Tenneco Inc. | | Oil & Gas Operator | Jun 1989 |
| 28273 | Tenneco Oil Comp | | Oil & Gas Operator | Aug 1995 |
| 28274 | Tenneco Oil Company | Oklahoma City, OK 73125 | Oil & Gas Operator | Dec 2025 |
| 28275 | Tenneco Ventures Corporation | | Oil & Gas Operator | Feb 1996 |
| 28276 | Tenneco West, Inc. | | Oil & Gas Operator | Dec 1983 |
| 28277 | Tennessee Gas Pipeline Company | | Oil & Gas Operator | Dec 2011 |
| 28278 | Tennessee Gas Pipeline Company, LLC | | Oil Operator | Dec 2024 |
| 28279 | Tennessee Properties, Inc | | Oil Operator | Dec 2014 |
| 28280 | Tennyson Oil & Gas | Muskogee, OK 74401 | Oil Operator | Feb 2026 |
| 28281 | Tenpas, Bruce | Clymer, NY 14724 | Gas Operator | Dec 2024 |
| 28282 | Tensas Delta Expl Co., LLC | Shreveport, LA 71101-5323 | Oil & Gas Operator | Jul 2021 |
| 28283 | Tensas Delta Explo. Co., LLC | Shreveport, LA 71101 | Oil & Gas Operator | Dec 2011 |
| 28284 | Tensas Delta Land Company | | Oil & Gas Operator | Apr 2002 |
| 28285 | Teocali Energy LLC | Denver, CO 80202 | Oil & Gas Operator | Mar 2026 |
| 28286 | Teocalli Exploration LLC | Kingfisher, OK 73750 | Oil & Gas Operator | Mar 2026 |
| 28287 | Teon Management, LLC | Midland, TX 79704 | Oil & Gas Operator | Mar 2020 |
| 28288 | Tep Barnett USA, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | May 2026 |
| 28289 | Tepco Resources, Inc. | Houston, TX 77027 | Oil & Gas Operator | Sep 2004 |
| 28290 | Tepco, Inc. | Houston, TX 77002 | Oil & Gas Operator | Oct 1999 |
| 28291 | Tepee Petroleum Company, Inc. | Houston, TX 77098 | Oil & Gas Operator | Feb 2014 |
| 28292 | Ter Ex Inc | Butler, PA 16002-8638 | Gas Operator | Dec 1994 |
| 28293 | Terex Energy Corporation | Casper, WY 82602 | Oil & Gas Operator | Aug 2019 |
| 28294 | Terhune Harry C | Bartlesville, OK 74003 | Oil Operator | Feb 1997 |
| 28295 | Terhune Opal S | Bartlesville, OK 74006-0472 | Oil Operator | Apr 2025 |
| 28296 | Term Energy Corp. | Harrisville, WV 26362-0000 | Oil & Gas Operator | Dec 2021 |
| 28297 | Termo Company Of Texas | | Oil & Gas Operator | Dec 1986 |
| 28298 | Terra Energy Co LLC | | Oil & Gas Operator | Apr 2018 |
| 28299 | Terra Energy LTD | | Oil & Gas Operator | Apr 2018 |
| 28300 | Terra Energy LTD And Miller Energy Inc And Mille | | Gas Operator | Dec 1998 |