| 11401 | Top O'Texas Production, Inc. | Odessa, TX 79764 | Oil & Gas Operator | Feb 1997 |
| 11402 | Top Op, L.L.C. | Houston, TX 77077 | Oil & Gas Operator | May 2020 |
| 11403 | Topat Oil Corporation | Midland, TX 79701 | Oil & Gas Operator | Sep 2017 |
| 11404 | Topaz Oil Company | Diboll, TX 75941 | Oil & Gas Operator | Apr 1994 |
| 11405 | Topper Oil Company | Borger, TX 79007 | Oil & Gas Operator | Dec 2025 |
| 11406 | Tor Energy, LLC | Temple, TX 76501 | Oil & Gas Operator | Dec 2025 |
| 11407 | Torch Energy Services, Inc. | Houston, TX 77010 | Oil & Gas Operator | Sep 2011 |
| 11408 | Torch Oil & Gas Company | Houston, TX 77010 | Oil & Gas Operator | Aug 1997 |
| 11409 | Torch Operating Company | Houston, TX 77010 | Oil & Gas Operator | Mar 2015 |
| 11410 | Torch Operating LLC | Fort Worth, TX 76135 | Oil & Gas Operator | Oct 2020 |
| 11411 | Toreador Exploration & Prod Inc | Dallas, TX 75240 | Oil & Gas Operator | Feb 2008 |
| 11412 | Torrent Oil LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2025 |
| 11413 | Tortuga Operating Company | Houston, TX 77055 | Oil & Gas Operator | Dec 2025 |
| 11414 | Total E&P USA, Inc. | Houston, TX 77210 | Oil & Gas Operator | May 2025 |
| 11415 | Total Minatome Corporation | Houston, TX 77210 | Oil & Gas Operator | Dec 1998 |
| 11416 | Totalfinaelf E&P USA Inc | Houston, TX 77024 | Oil & Gas Operator | Jul 2007 |
| 11417 | Touchstone Resources USA, Inc. | Houston, TX 77002 | Oil & Gas Operator | Oct 2006 |
| 11418 | Tower Resources Inc | Conroe, TX 77304 | Oil & Gas Operator | Dec 2025 |
| 11419 | Townes, Don | Clarksville, TX 75426 | Oil & Gas Operator | Dec 2025 |
| 11420 | Townsend Company | Abilene, TX 79608 | Oil & Gas Operator | Dec 2021 |
| 11421 | Townsend, R. F. Trustee | Dallas, TX 75201 | Oil & Gas Operator | Dec 1994 |
| 11422 | TPC Exploration, LLC | May, TX 76857 | Oil & Gas Operator | Dec 2025 |
| 11423 | Tpet Management Inc. | Dallas, TX 75204 | Oil & Gas Operator | Dec 1997 |
| 11424 | Tpet, Inc. | Dallas, TX 75204 | Oil & Gas Operator | Mar 2008 |
| 11425 | TPR - Texas Petroleum Res. Inc | Dallas, TX 75201 | Oil & Gas Operator | Dec 2025 |
| 11426 | TR Offshore, LLC | Corpus Chrsti, TX 78413 | Oil & Gas Operator | Dec 2025 |
| 11427 | TR Operating LLC | Graham, TX 76450 | Oil Operator | Oct 2025 |
| 11428 | Trace Energy Management Inc | Weatherford, TX 76086 | Oil & Gas Operator | Dec 2025 |
| 11429 | Trace Operating, LLC | Fort Worth, TX 76116 | Oil & Gas Operator | Dec 2025 |
| 11430 | Tracer Energy, Inc. | Graham, TX 76450 | Oil & Gas Operator | Nov 1998 |
| 11431 | Tracer Operating, Inc. | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 11432 | Tracker Mineral | Clyde, TX 79510 | Oil & Gas Operator | Dec 2025 |
| 11433 | Tracker Oil & Gas, Inc. | Bastrop, TX 78602 | Oil & Gas Operator | Dec 2025 |
| 11434 | Tracker Resource Dev III, LLC | Englewood, CO 80112 | Oil & Gas Operator | Jul 2021 |
| 11435 | Trackstar Energies LLC | Colorado Springs, CO 80919-3233 | Oil Operator | Mar 2023 |
| 11436 | Tracy Co. | Rockdale, TX 76567 | Oil & Gas Operator | Mar 2022 |
| 11437 | Tracy Operating Co., LLC | Rockdale, TX 76567 | Oil & Gas Operator | Dec 2025 |
| 11438 | Tracy Production | Lindale, TX 75771 | Oil & Gas Operator | Dec 2025 |
| 11439 | Tradestar Energy, Inc. | Hot Springs, AR 71913 | Oil Operator | Feb 2021 |
| 11440 | Tradition Resources LLC | Houston, TX 77002 | Oil & Gas Operator | Jan 2014 |
| 11441 | Tradition Resources Oper, LLC | Houston, TX 77002 | Oil & Gas Operator | Jul 2017 |
| 11442 | Trail Mountain, Inc. | Artesia, NM 88210 | Oil & Gas Operator | Jan 2016 |
| 11443 | Trail Ridge Energy Partners, LLC | Grapevine, TX 76051 | Oil & Gas Operator | Sep 2025 |
| 11444 | Trail Ridge Energy PRTNS II LLC | Grapevine, TX 76051 | Oil & Gas Operator | Jun 2017 |
| 11445 | Trailblazer Energy LLC | Plano, TX 75075 | Oil & Gas Operator | Sep 2025 |
| 11446 | Trailblazer Energy Resources, LLC | Tulsa, OK 74136 | Oil & Gas Operator | Dec 2025 |
| 11447 | Trailblazer Oil & Gas LLC | Goliad, TX 77963 | Oil & Gas Operator | Dec 2025 |
| 11448 | Trailhead Exploration, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2025 |
| 11449 | Trans Terra Corp., International | Amarillo, TX 79159 | Oil & Gas Operator | Feb 2009 |
| 11450 | Trans Texas Minerals Company | Austin, TX 78714 | Oil & Gas Operator | Aug 1999 |
| 11451 | Trans-Pecos Resources, Inc. | Houston, TX 77056 | Oil & Gas Operator | Dec 2025 |
| 11452 | Trans-Tex Operating LLC | Dallas, TX 75367 | Oil & Gas Operator | Dec 2025 |
| 11453 | Trans-Texas Energy Group LLC | Mineral Wells, TX 76068 | Oil & Gas Operator | Jul 2015 |
| 11454 | Transamerica Energy Corp. | Atlanta, GA 30356 | Oil & Gas Operator | Dec 2025 |
| 11455 | Transamerican Natural Gas Corp. | Houston, TX 77032 | Oil & Gas Operator | Aug 2000 |
| 11456 | Transatlantic Petr (USA) Corp. | Dallas, TX 75206 | Oil & Gas Operator | Dec 2025 |
| 11457 | Transcontinental Minerals Corp. | The Woodlands, TX 77380 | Oil & Gas Operator | Dec 2008 |
| 11458 | Transcontinental Shale L.L.C. | Austin, TX 78717 | Oil & Gas Operator | Feb 2016 |
| 11459 | Transfuel Resources Co | Houston, TX 77215 | Oil & Gas Operator | Aug 2013 |
| 11460 | Transoil, Inc. | Oklahoma City, OK 73129 | Oil & Gas Operator | Dec 2025 |
| 11461 | Transpacific Energy, LLC | Katy, TX 77450 | Oil & Gas Operator | Dec 2025 |
| 11462 | Transpetco I | Shreveport, LA 71101 | Oil & Gas Operator | May 2009 |
| 11463 | Transtexas Gas Corporation | Houston, TX 77265 | Oil & Gas Operator | Aug 2005 |
| 11464 | Trap Rock Oil Company | Cambridge, MA 02138 | Oil & Gas Operator | Nov 2005 |
| 11465 | Trap Rock Oil, LTD. | Houston, TX 77005 | Oil & Gas Operator | Dec 2025 |
| 11466 | Traton Operating Company | Kingwood, TX 77339 | Oil & Gas Operator | Mar 2019 |
| 11467 | Travelers Oil Company | Amarillo, TX 79102 | Oil & Gas Operator | Dec 2025 |
| 11468 | Travers Resources, Inc. | Houston, TX 77056 | Oil & Gas Operator | Dec 2025 |
| 11469 | Travis | Houston, TX 77057 | Oil Operator | Dec 2025 |
| 11470 | Travis Operating, LLC | Kingwood, TX 77345 | Oil & Gas Operator | Dec 2025 |
| 11471 | Travis, J. J., Trustee | Rockport, TX 78382 | Oil & Gas Operator | Dec 1996 |
| 11472 | Treadaway Oil Co. | Balmorhea, TX 79718 | Oil & Gas Operator | Dec 2025 |
| 11473 | Treadstone Energy Partners, LLC | Houston, TX 77070 | Oil & Gas Operator | Jun 2016 |
| 11474 | Treadstone Energy PRTNR Op, LLC | Katy, TX 77494 | Oil & Gas Operator | Dec 2025 |
| 11475 | Treco Oil Company | Albany, TX 76430 | Oil & Gas Operator | Dec 2025 |
| 11476 | Tree Operating, LLC | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 11477 | Trejim Operators, LLC | Pampa, TX 79065 | Oil & Gas Operator | Dec 2025 |
| 11478 | Trek Aec, LLC | Wichita, KS 67202 | Oil & Gas Operator | Jun 2025 |
| 11479 | Trek Exploration, Inc. | Pampa, TX 79065 | Oil & Gas Operator | Dec 2025 |
| 11480 | Trek Oil & Gas, Inc | Houston, TX 77002 | Oil Operator | Mar 1998 |
| 11481 | Trek Petroleum Company, Inc. | Midland, TX 79707 | Oil & Gas Operator | Dec 2025 |
| 11482 | Trek Resources, Inc. | Dallas, TX 75207 | Oil & Gas Operator | Dec 2025 |
| 11483 | Tren Energy LLC | El Paso, TX 79912 | Oil & Gas Operator | Dec 2025 |
| 11484 | Trend Exploration Company | Midland, TX 79701 | Oil & Gas Operator | Mar 2008 |
| 11485 | Trend Exploration I LLC | Midland, TX 79701 | Oil & Gas Operator | May 2011 |
| 11486 | Trenna Oil Inc. | Midland, TX 79702 | Oil & Gas Operator | Dec 2013 |
| 11487 | Tres Azores Oil & Gas, Inc. | Fort Worth, TX 76185 | Oil & Gas Operator | Aug 2003 |
| 11488 | Tres Operating Co., LLC | Katy, TX 77494 | Oil Operator | Dec 2025 |
| 11489 | Tres Piedras, Inc. | Wichita Falls, TX 76301 | Oil & Gas Operator | Apr 1999 |
| 11490 | Tres Roughneckas WTX LLC | MC Camey, TX 79752 | Oil Operator | Dec 2025 |
| 11491 | Tresami, Inc. | Jacksboro, TX 76458 | Oil & Gas Operator | Dec 2025 |
| 11492 | Trestle Creek Properties, LLC | Manchaca, TX 78652 | Oil & Gas Operator | Dec 2025 |
| 11493 | Trey Exploration, Inc. | San Angelo, TX 76901 | Oil & Gas Operator | Dec 2020 |
| 11494 | Trey Operating Company | MC Camey, TX 79752 | Oil Operator | Jan 2016 |
| 11495 | Trey Resources Inc. | Midland, TX 79710 | Oil & Gas Operator | Aug 2025 |
| 11496 | Trey Services, Inc. | Midland, TX 79711 | Oil & Gas Operator | Dec 1996 |
| 11497 | Tri "M" Oil & Gas | Muenster, TX 76252 | Oil & Gas Operator | Dec 2025 |
| 11498 | Tri City Oil Co., LLC | Kountze, TX 77625 | Oil Operator | Dec 2025 |
| 11499 | Tri Energy Resources, Inc. | Norman, OK 73070 | Oil Operator | Dec 2025 |
| 11500 | Tri Sportsmen Energy, Inc. | Austin, TX 78746 | Oil & Gas Operator | Dec 2025 |