| 4301 | Sydson D'Oro Expl. Co. | Houston, TX 77079 | Oil & Gas Operator | Jan 1992 |
| 4302 | Sylvan Energy, LLC | Pittsburgh, PA 15211 | Oil & Gas Operator | Apr 2024 |
| 4303 | Synergy Oil & Gas, Inc. | Houston, TX 77024 | Oil & Gas Operator | Nov 2019 |
| 4304 | Synergy Oil & Gas, L.P. | Houston, TX 77024 | Oil & Gas Operator | May 2012 |
| 4305 | T & B Resources | | Oil & Gas Operator | Jul 1990 |
| 4306 | T & F Oil Company | | Oil Operator | Jan 2024 |
| 4307 | T & F Oil Company, LLC | | Oil Operator | Oct 2011 |
| 4308 | T & L Oil Production | | Oil Operator | Jan 2024 |
| 4309 | T & L Production Company | | Oil Operator | Feb 1984 |
| 4310 | T & M Gauging | | Oil Operator | Oct 2006 |
| 4311 | T & R Oil | Mapleton, KS 66754 | Oil & Gas Operator | May 2018 |
| 4312 | T, F & B Oil Company, LLC | | Oil Operator | Jan 2013 |
| 4313 | T-M Well Service | Jefferson, TX 75657 | Oil & Gas Operator | Sep 2004 |
| 4314 | T-M Well Service, L.L.C. | Jefferson, TX 75657 | Oil & Gas Operator | Dec 2023 |
| 4315 | T. And M. Production | Oil City, LA 71061 | Oil & Gas Operator | Apr 2024 |
| 4316 | T. C. Morrow Oil Co. | | Oil & Gas Operator | Apr 1991 |
| 4317 | T. D. Tedder | | Oil Operator | Dec 1991 |
| 4318 | T. J. Guido | | Oil & Gas Operator | Oct 1998 |
| 4319 | T. J. Lundy | | Oil Operator | Jan 2024 |
| 4320 | T. J. Operating Co., Inc. | | Oil & Gas Operator | Aug 1998 |
| 4321 | T. L. James & Co., Inc. | | Oil & Gas Operator | Oct 1992 |
| 4322 | T. M. Hopkins | | Oil & Gas Operator | Aug 2007 |
| 4323 | T. N. T. Energy Co. | | Oil Operator | May 1991 |
| 4324 | T. O. Kimbrell, LLC | | Oil & Gas Operator | Feb 2024 |
| 4325 | T. W. McGuire & Associates, Inc. | | Oil & Gas Operator | Nov 2018 |
| 4326 | T. West Bullock, SR. | | Oil & Gas Operator | Mar 1989 |
| 4327 | T.B. Lanford Et Al | | Oil Operator | Apr 1987 |
| 4328 | T.O. Greer Productions | | Oil & Gas Operator | Aug 2013 |
| 4329 | T.O.I. | Midland, TX 79710 | Oil & Gas Operator | Mar 2001 |
| 4330 | Tabco Exploration Inc. | New Orleans, LA 70131 | Oil & Gas Operator | Dec 1998 |
| 4331 | Tabco Producing Co. | | Oil & Gas Operator | Jan 1998 |
| 4332 | Tadlock Properites | | Oil & Gas Operator | Jan 1994 |
| 4333 | Taggart Oil Co., Inc. | | Oil Operator | Oct 1992 |
| 4334 | Tahoe Corporation | | Gas Operator | Feb 2023 |
| 4335 | Talco Midstream Assets, LTD. | | Oil Operator | May 2017 |
| 4336 | Talley Resources, Inc. | | Oil & Gas Operator | Apr 1993 |
| 4337 | Tallgrass Production Company LLC | Santa Anna, TX 76878 | Oil & Gas Operator | Mar 2014 |
| 4338 | Talos Energy Offshore LLC | | Oil & Gas Operator | Dec 2023 |
| 4339 | Talos Ert LLC | | Oil & Gas Operator | Nov 2023 |
| 4340 | Talos Gulf Coast Onshore LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2023 |
| 4341 | Talos Third Coast LLC | | Oil & Gas Operator | Dec 2023 |
| 4342 | Tammany Oil & Gas LLC | | Oil & Gas Operator | Feb 2005 |
| 4343 | Tana Exploration Company LLC | Dallas, TX 75219 | Oil & Gas Operator | Aug 2021 |
| 4344 | Tanner Oil, Inc | | Oil & Gas Operator | Nov 2023 |
| 4345 | Tanos Exploration II, LLC | Tyler, TX 75701 | Oil & Gas Operator | Sep 2023 |
| 4346 | Targa Midstream Services LLC | Houston, TX 77002 | Oil Operator | Mar 2023 |
| 4347 | Target Oil & Gas, Inc. | | Oil & Gas Operator | Nov 2011 |
| 4348 | Tarpon Oil Of Texas | | Oil & Gas Operator | Aug 1994 |
| 4349 | Tatco, Inc. | | Oil & Gas Operator | May 1991 |
| 4350 | Taurus Exploration U.S.A., Inc. | Midland, TX 79705 | Oil & Gas Operator | Nov 1998 |
| 4351 | Taurus Petr-Fieldcrest Petr | | Oil & Gas Operator | Apr 1989 |
| 4352 | Taurus Petroleum | | Oil & Gas Operator | Jul 1987 |
| 4353 | Taylor Energy Co. | | Oil & Gas Operator | May 1991 |
| 4354 | Taylor-McIlhenny Oper. Co., Inc. | Lewisville, TX 75029 | Oil & Gas Operator | Jan 1996 |
| 4355 | TBR Operating Company Inc. | | Gas Operator | Dec 2023 |
| 4356 | Tchefuncte Natural Resources, L.L.C. | | Oil & Gas Operator | Aug 2011 |
| 4357 | TD & Associates, Inc. | | Oil & Gas Operator | Jun 1998 |
| 4358 | TDC Energy Corporation | | Oil & Gas Operator | Dec 2001 |
| 4359 | TDX Energy, LLC | Shreveport, LA 71101 | Oil & Gas Operator | Dec 2023 |
| 4360 | Teal Petroleum Co. | | Oil & Gas Operator | Sep 1978 |
| 4361 | Team Operating, L.L.C. | Pinehurst, TX 77362 | Oil & Gas Operator | Apr 2024 |
| 4362 | Tebco Oil & Gas | | Oil & Gas Operator | Sep 1996 |
| 4363 | Tecpetrol Operating LLC | Houston, TX 77027 | Oil & Gas Operator | Dec 2015 |
| 4364 | Tedco | | Gas Operator | Nov 1988 |
| 4365 | Tee Operating Company | | Oil & Gas Operator | Jun 1989 |
| 4366 | Tejas Production Company | | Oil Operator | Nov 1979 |
| 4367 | Telico Minerals, L.L.C. | | Oil & Gas Operator | Sep 2019 |
| 4368 | Tellurian Operating LLC | | Oil & Gas Operator | Dec 2023 |
| 4369 | Tellus Energy, LLC | | Oil & Gas Operator | Dec 2023 |
| 4370 | Tellus Operating Group, LLC | | Oil & Gas Operator | Jan 2024 |
| 4371 | Tema Oil And Gas Company | Houston, TX 77084 | Oil & Gas Operator | Apr 2024 |
| 4372 | Tema Oil And Gas, LLC | Houston, TX 77040 | Oil & Gas Operator | Apr 2000 |
| 4373 | Temex Energy, Inc. | Oklahoma City, OK 73101 | Oil & Gas Operator | Feb 2002 |
| 4374 | Tempest Oil Company, Inc. | | Oil & Gas Operator | Jul 1978 |
| 4375 | Templeton Energy Inc | | Oil & Gas Operator | Jul 1987 |
| 4376 | Tenison Oil Company | Abilene, TX 79605 | Oil & Gas Operator | Apr 2024 |
| 4377 | Tenneco Inc. | | Oil & Gas Operator | Jun 1989 |
| 4378 | Tenneco Oil Company | Oklahoma City, OK 73125 | Oil & Gas Operator | Nov 2023 |
| 4379 | Tenneco Ventures Corporation | | Oil & Gas Operator | Feb 1996 |
| 4380 | Tennessee Gas Pipeline Company | Houston, TX 77252 | Oil & Gas Operator | Dec 2011 |
| 4381 | Tennessee Gas Pipeline Company, LLC | | Oil Operator | Dec 2023 |
| 4382 | Tensas Delta Exploration Company, LLC | Shreveport, LA 71101-5323 | Oil & Gas Operator | Jul 2021 |
| 4383 | Tensas Delta Land Company | | Oil & Gas Operator | Apr 2002 |
| 4384 | Tepco Resources, Inc. | Houston, TX 77027 | Oil & Gas Operator | Oct 2004 |
| 4385 | Tepco, Inc. | Houston, TX 77002 | Oil & Gas Operator | Oct 1999 |
| 4386 | Tepee Petroleum Company, Inc. | Houston, TX 77098 | Oil & Gas Operator | Feb 2014 |
| 4387 | Termo Co. Of Texas | | Oil & Gas Operator | Dec 1986 |
| 4388 | Terra Resources, Inc. | Casper, WY 82601 | Oil & Gas Operator | Jun 1990 |
| 4389 | Terral D Hinds | | Oil Operator | Mar 2012 |
| 4390 | Terrier Oil Company | | Oil & Gas Operator | Feb 2015 |
| 4391 | Terrier Oil Company, LLC | | Oil & Gas Operator | Jan 2024 |
| 4392 | Terronne Petroleum Corporation | | Oil & Gas Operator | Dec 2023 |
| 4393 | Terry Development, Inc. | | Oil & Gas Operator | Aug 1992 |
| 4394 | Tervita, LLC | | Oil Operator | May 2021 |
| 4395 | Tesla Resources, Inc. | | Oil & Gas Operator | Aug 1996 |
| 4396 | Tesoro E&P Company, L.P. | San Antonio, TX 78216 | Oil & Gas Operator | Jan 2000 |
| 4397 | Tesoro Petroleum Corporation | | Oil & Gas Operator | May 1982 |
| 4398 | Tex/Con Oil & Gas Company | Houston, TX 77074 | Oil & Gas Operator | Feb 2001 |
| 4399 | Texaco E & P Inc | Houston, TX 77099 | Oil & Gas Operator | Apr 2024 |
| 4400 | Texaco Inc | Kingfisher, OK 73750 | Oil & Gas Operator | Dec 2017 |