| 11301 | Thunderbird (Texas) Resources LP | Edmond, OK 73025 | Oil & Gas Operator | Apr 2019 |
| 11302 | Thunderbird Drilling, Inc. | Wichita, KS 67207 | Oil Operator | Oct 2008 |
| 11303 | Thunderbird Energy, Inc. | Norman, OK 73069 | Oil & Gas Operator | Apr 2025 |
| 11304 | Thunderbird Operating, L.L.C. | Graham, TX 76450 | Oil & Gas Operator | Apr 2025 |
| 11305 | Thunderbolt Oil & Gas, Inc. | Abilene, TX 79605 | Oil & Gas Operator | Feb 2004 |
| 11306 | Thunderbolt Petroleum Co. LLC | Midland, TX 79702 | Oil & Gas Operator | Apr 2011 |
| 11307 | Thurston Texas Operating Co LLC | Dallas, TX 75219 | Oil Operator | Apr 2025 |
| 11308 | Tiara Resources, Inc. | Fort Worth, TX 76179 | Oil & Gas Operator | Apr 1998 |
| 11309 | Tiburon Oil & Gas, Inc. | Midland, TX 79701 | Oil & Gas Operator | Aug 2000 |
| 11310 | Tidal Petroleum, Inc. | Schertz, TX 78154 | Oil & Gas Operator | Apr 2025 |
| 11311 | Tide West Oil Company | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2021 |
| 11312 | Tidelands Gas Corporation | Flower Mound, TX 75028 | Oil & Gas Operator | Sep 2000 |
| 11313 | Tidelands Oil Corporation | Crystal City, TX 78839 | Oil & Gas Operator | Aug 2003 |
| 11314 | Tidemark Exploration Inc | Tulsa, OK 74120 | Oil & Gas Operator | Apr 2019 |
| 11315 | Tidemark Petroleum, Inc. | San Antonio, TX 78209 | Oil & Gas Operator | Jul 2002 |
| 11316 | Tidewater Minerals Corporation | Orange Grove, TX 78372 | Oil & Gas Operator | Apr 2025 |
| 11317 | Tidewater Resources Corporation | Memphis, TN 38138 | Gas Operator | Feb 2025 |
| 11318 | Tidlow | Santa Fe, NM 87508 | Oil & Gas Operator | Dec 2007 |
| 11319 | Tidmore, Ann | Albany, TX 76430 | Oil & Gas Operator | Apr 2025 |
| 11320 | Tidwell Production Company | Sonora, TX 76950 | Oil & Gas Operator | Apr 2025 |
| 11321 | Tierra Mineral Development, L.C. | Dallas, TX 75244 | Oil & Gas Operator | Oct 1994 |
| 11322 | Tiger Resources, L.L.C. | Houston, TX 77070 | Oil & Gas Operator | Feb 2004 |
| 11323 | Tightrock Enterprises, Inc. | Trinidad, TX 75163 | Oil Operator | Apr 2025 |
| 11324 | Tigrett, Robert L. Oil & Gas Co. | Pampa, TX 79065 | Oil & Gas Operator | Dec 2013 |
| 11325 | Tiki Oil & Gas, LLC | Cisco, TX 76437 | Oil Operator | Apr 2025 |
| 11326 | Tilley Oil & Gas, Inc. | Oklahoma City, OK 73172 | Oil & Gas Operator | Apr 2025 |
| 11327 | Tillman, Jack Equipment Co. | Holliday, TX 76366 | Oil & Gas Operator | Sep 2004 |
| 11328 | Tilmon Oil Co. | Luling, TX 78648 | Oil & Gas Operator | Sep 2012 |
| 11329 | Timber Creek Operating LLC | Granbury, TX 76049 | Oil & Gas Operator | Apr 2025 |
| 11330 | Timberwolf Energy, Inc. | Houston, TX 77042 | Oil & Gas Operator | Apr 2025 |
| 11331 | Timn Oil Co. | Lubbock, TX 79424 | Oil & Gas Operator | Aug 1997 |
| 11332 | Tindle Petroleum LLC | Midland, TX 79701 | Oil & Gas Operator | Jan 2023 |
| 11333 | Tipco Operating Co. | Marshall, TX 75671 | Oil & Gas Operator | Apr 2025 |
| 11334 | Tipperary Oil & Gas Corp | Denver, CO 80202 | Oil & Gas Operator | May 2014 |
| 11335 | Titan Allen Dome LLC | Houston, TX 77056 | Oil Operator | Feb 2015 |
| 11336 | Titan Energy Operating LLC | Houston, TX 77056 | Oil Operator | Jan 2016 |
| 11337 | Titan Energy, Inc. | Austin, TX 78703 | Oil & Gas Operator | Apr 2025 |
| 11338 | Titan Exploration LLC | Denver, CO 80202 | Oil & Gas Operator | Feb 2025 |
| 11339 | Titan Operating, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Jun 2012 |
| 11340 | Titan Petroleum, Inc. | Tomball, TX 77375 | Oil & Gas Operator | Nov 2004 |
| 11341 | Titan Resources I, Inc. | Midland, TX 79701 | Oil & Gas Operator | Jun 2000 |
| 11342 | Titan Rock E&P, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Jan 2024 |
| 11343 | Titus Liberty Multi Well 2, LLC | Irving, TX 75063 | Oil & Gas Operator | Apr 2025 |
| 11344 | Titus Oil & Gas Production, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Sep 2022 |
| 11345 | Tiza Energy, Inc. | Austin, TX 78715 | Oil & Gas Operator | Apr 2025 |
| 11346 | Tiza Operating Company | Austin, TX 78716 | Oil & Gas Operator | Jan 2000 |
| 11347 | TJ Oil Company | Borger, TX 79008 | Oil & Gas Operator | Apr 2025 |
| 11348 | TK Drilling Corp. | Tulsa, OK 74133 | Oil & Gas Operator | Jan 2025 |
| 11349 | TK Operating | Cross Plains, TX 76443 | Oil & Gas Operator | Apr 2025 |
| 11350 | TKL Oil Properties Inc | Konawa, OK 74849 | Oil & Gas Operator | Dec 2024 |
| 11351 | TKP Petroleum, Inc. | Lubbock, TX 79464 | Oil & Gas Operator | Apr 2025 |
| 11352 | TLH Production LLC | Abilene, TX 79602 | Oil & Gas Operator | Apr 2025 |
| 11353 | TMBR/Sharp Drilling, Inc. | Midland, TX 79703 | Oil & Gas Operator | Feb 2004 |
| 11354 | TMR Exploration, Inc. | Bossier City, LA 71171 | Oil & Gas Operator | Apr 2025 |
| 11355 | TNC Energy, LLC | Lubbock, TX 79401 | Oil & Gas Operator | Nov 2016 |
| 11356 | TNCH, LLC | Colorado City, TX 79512 | Oil Operator | Apr 2025 |
| 11357 | TNR Petroleum, Inc. | Austin, TX 78747 | Oil & Gas Operator | Sep 1999 |
| 11358 | TNT Energy Inc. | Brownwood, TX 76801 | Oil & Gas Operator | May 2013 |
| 11359 | TNT Oil Co. | Hamlin, TX 79520 | Oil & Gas Operator | Apr 2025 |
| 11360 | TNT Petroleum Company, Inc. | Corpus Chrsti, TX 78473 | Oil & Gas Operator | Feb 1996 |
| 11361 | Toc Energy Resources, LLC | Fort Worth, TX 76107 | Oil & Gas Operator | Apr 2025 |
| 11362 | Todd, J R Oil & Investments, Inc | Dallas, TX 75206 | Oil & Gas Operator | Jun 2002 |
| 11363 | Toklan Oil And Gas Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Feb 2025 |
| 11364 | Tola Production Company | Dallas, TX 75367 | Oil & Gas Operator | Apr 2025 |
| 11365 | Tollett Oil | Graham, TX 76450 | Oil Operator | Apr 2025 |
| 11366 | Tom Coble Oil & Gas LP | Amarillo, TX 79105 | Oil & Gas Operator | Apr 2025 |
| 11367 | Tom E. Johnson Exploration LLC | Midland, TX 79702 | Oil & Gas Operator | Dec 2019 |
| 11368 | Tom Operating And Minerals LLC | Andrews, TX 79714 | Gas Operator | Apr 2025 |
| 11369 | Tom-Tom Operating, LLC | Dallas, TX 75209 | Oil Operator | Apr 2025 |
| 11370 | Toma Oil & Gas, Inc. | Corpus Chrsti, TX 78411 | Oil & Gas Operator | Oct 1997 |
| 11371 | Tomar Petroleum Inc | Dallas, TX 75225 | Oil & Gas Operator | Mar 2001 |
| 11372 | Tomco Oil & Gas Inc. | Comanche, TX 76442 | Oil & Gas Operator | Apr 2025 |
| 11373 | Tomel Production, LLC | Dallas, TX 75360 | Oil & Gas Operator | Apr 2025 |
| 11374 | Tomlinson, John Oil Operator | Batson, TX 77519 | Oil & Gas Operator | Mar 2008 |
| 11375 | Tomlinson, Thomas K. Inc. | Port Lavaca, TX 77979 | Oil & Gas Operator | Jul 2003 |
| 11376 | Tompkins, Kevin D. | Kilgore, TX 75663 | Oil Operator | Apr 2025 |
| 11377 | Tomsha LLC | Bryson, TX 76427 | Oil Operator | Apr 2025 |
| 11378 | Toney, W.L. | Borger, TX 79007 | Oil & Gas Operator | Oct 2012 |
| 11379 | Tong Petrotech Inc. | Houston, TX 77079 | Oil & Gas Operator | Apr 2025 |
| 11380 | Tonk Creek Oil Company | Aspermont, TX 79502 | Oil & Gas Operator | Apr 2025 |
| 11381 | Tonto Petroleum Corporation | Post, TX 79356 | Oil & Gas Operator | Jan 2007 |
| 11382 | Toomey Oil Company Inc | Tulsa, OK 74120 | Oil & Gas Operator | Feb 2025 |
| 11383 | Top O'Texas Energy, L.P. | Pampa, TX 79066 | Oil & Gas Operator | Apr 2025 |
| 11384 | Top O'Texas Production Co. | Pampa, TX 79065 | Oil & Gas Operator | May 2024 |
| 11385 | Top O'Texas Production, Inc. | Odessa, TX 79764 | Oil & Gas Operator | Feb 1997 |
| 11386 | Top Op, L.L.C. | Houston, TX 77077 | Oil & Gas Operator | May 2020 |
| 11387 | Topat Oil Corporation | Midland, TX 79701 | Oil & Gas Operator | Sep 2017 |
| 11388 | Topaz Oil Company | Diboll, TX 75941 | Oil & Gas Operator | Apr 1994 |
| 11389 | Topper Oil Company | Borger, TX 79007 | Oil & Gas Operator | Apr 2025 |
| 11390 | Tor Energy, LLC | Temple, TX 76501 | Oil & Gas Operator | Apr 2025 |
| 11391 | Torch Energy Services, Inc. | Houston, TX 77010 | Oil & Gas Operator | Sep 2011 |
| 11392 | Torch Oil & Gas Company | Houston, TX 77010 | Oil & Gas Operator | Aug 1997 |
| 11393 | Torch Operating Company | Houston, TX 77010 | Oil & Gas Operator | Mar 2015 |
| 11394 | Torch Operating LLC | Fort Worth, TX 76135 | Oil & Gas Operator | Oct 2020 |
| 11395 | Toreador Exploration & Prod Inc | Dallas, TX 75240 | Oil & Gas Operator | Feb 2008 |
| 11396 | Torrent Oil LLC | Houston, TX 77002 | Oil & Gas Operator | Apr 2025 |
| 11397 | Tortuga Operating Company | Houston, TX 77055 | Oil & Gas Operator | Apr 2025 |
| 11398 | Total E&P USA, Inc. | Houston, TX 77210 | Oil & Gas Operator | Nov 2011 |
| 11399 | Total Minatome Corporation | Houston, TX 77210 | Oil & Gas Operator | Dec 1998 |
| 11400 | Totalfinaelf E&P USA Inc | Houston, TX 77024 | Oil & Gas Operator | Jul 2007 |