| 30301 | Trivium Operating, LLC | Fort Worth, TX 76107 | Oil & Gas Operator | May 2025 |
| 30302 | Trojan Oil And Gas | White Deer, TX 79097 | Oil & Gas Operator | Dec 1994 |
| 30303 | Trojan Oil Company, LLC | Big Lake, TX 76932 | Oil Operator | May 2025 |
| 30304 | Trojan Resources LLC | Sapulpa, OK 74066-8095 | Oil Operator | Feb 2025 |
| 30305 | Trolz Glynn And Associates Inc | | Oil & Gas Operator | Apr 1995 |
| 30306 | Troubadour Operating, LLC | Houston, TX 77019 | Oil & Gas Operator | May 2025 |
| 30307 | Troup Oil & Gas, LLC | Oklahoma City, OK 73112 | Oil Operator | May 2025 |
| 30308 | Trousil & Associates, Inc. | Steamboat SPG, CO 80477 | Oil & Gas Operator | Dec 2006 |
| 30309 | Trout Disposal Well Inc | Hammon, OK 73650 | Oil & Gas Operator | Jan 2025 |
| 30310 | Trout Kye Jr | | Oil & Gas Operator | Dec 2010 |
| 30311 | Trout Oil Company, Inc. | Odessa, TX 79762 | Oil & Gas Operator | May 2025 |
| 30312 | Troy E. Boyd | | Oil Operator | Oct 1998 |
| 30313 | Troy Energy Operating LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | Mar 2025 |
| 30314 | Troy Jaco, Inc. | Sherman, TX 75091 | Oil Operator | Dec 2018 |
| 30315 | Troy Resources C | | Oil Operator | Jun 1990 |
| 30316 | Troyer Energies Inc | Waterford, PA 16441-2809 | Gas Operator | Dec 2014 |
| 30317 | Troyer Gas & Oil | Waterford, PA 16441-2843 | Gas Operator | Dec 2001 |
| 30318 | Troyer Howard E | Tulsa, OK 74133-8016 | Oil & Gas Operator | Dec 2014 |
| 30319 | Troyer, Marvin | Clymer, NY 14724 | Gas Operator | Dec 2023 |
| 30320 | Troyer, Walter, Jr. | Clymer, NY 14724 | Gas Operator | Dec 2023 |
| 30321 | Troyer, Wayne A. | Galva, KS 67443 | Oil Operator | Jun 1997 |
| 30322 | Troyer, William W. | Clymer, NY 14724 | Gas Operator | Dec 2023 |
| 30323 | TRP Operating LLC | Houston, TX 77024 | Oil & Gas Operator | May 2025 |
| 30324 | TRP-Ok Properties LLC | Norman, OK 73072 | Oil & Gas Operator | Mar 2025 |
| 30325 | Tru Operating LLC | Denton, TX 76201 | Oil & Gas Operator | Apr 2023 |
| 30326 | Truckers Disposal Inc | Skiatook, OK 74070 | Oil & Gas Operator | Mar 2025 |
| 30327 | True Oil Company | Casper, WY 82602 | Oil & Gas Operator | Aug 2003 |
| 30328 | True Oil Company LLC | Midland, TX 79701 | Oil & Gas Operator | Mar 2016 |
| 30329 | True Oil LLC | Casper, WY 82602 | Oil & Gas Operator | Apr 2025 |
| 30330 | True Performance Administrators LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Feb 2025 |
| 30331 | True Wolf Operating, LLC | Iowa Park, TX 76367 | Oil Operator | May 2025 |
| 30332 | Trueblood Resources, Inc. | Denver, CO 80222 | Oil & Gas Operator | May 2025 |
| 30333 | Truevine Gas Company | Ada, OK 74821-1422 | Oil & Gas Operator | Feb 2025 |
| 30334 | Truevine Operating LLC | Ada, OK 74821-1422 | Oil & Gas Operator | Jan 2025 |
| 30335 | Truluck Enterprises LLC | Wichita Falls, TX 76308-4454 | Oil & Gas Operator | Apr 2015 |
| 30336 | Trumart Oil Comp | | Oil Operator | May 1990 |
| 30337 | Trumart Oil Company | Ellis, KS 67637 | Oil Operator | Dec 2000 |
| 30338 | Trumbull Resources | Mineral Ridge, OH 44440 | Oil & Gas Operator | Dec 2016 |
| 30339 | Trump Energy | Austin, TX 78734 | Oil & Gas Operator | Mar 2008 |
| 30340 | Trumter Petroleum Corporation | Fort Worth, TX 76185 | Oil & Gas Operator | Aug 1998 |
| 30341 | Trunkline Gas Company | | Oil Operator | Mar 2008 |
| 30342 | Trust Oil Co. | Pine, CO 80470 | Oil & Gas Operator | May 2025 |
| 30343 | Trustar Operating Company Inc. | Austin, TX 78750 | Oil Operator | May 2025 |
| 30344 | Trutex Operating, LLC | Haltom City, TX 76117 | Oil & Gas Operator | May 2025 |
| 30345 | Tryall, Inc | Porter, TX 77365 | Oil & Gas Operator | May 2025 |
| 30346 | Tryco Exploration, LLC | Plano, TX 75026 | Oil & Gas Operator | Nov 2006 |
| 30347 | Tryma Operating | Borger, TX 79008 | Oil & Gas Operator | May 2025 |
| 30348 | Tryvest, Inc. | | Oil & Gas Operator | Sep 1991 |
| 30349 | TS & T Drilling, Inc. | Wichita Falls, TX 76301 | Oil & Gas Operator | Mar 2016 |
| 30350 | TS Leasing Operations Inc. | | Oil & Gas Operator | Mar 2025 |
| 30351 | Tsalta Corporation | Oklahoma City, OK 73116 | Oil & Gas Operator | Nov 1998 |
| 30352 | Tsar Energy, LLC | Dallas, TX 75205 | Oil & Gas Operator | May 2025 |
| 30353 | Tsar Operating Company | Fort Worth, TX 76116 | Oil & Gas Operator | Jul 2021 |
| 30354 | Tschoepe, Arthur J. | Leakey, TX 78873 | Oil & Gas Operator | Jun 2001 |
| 30355 | TSF Operating | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 30356 | Tsoco | Tuleta, TX 78162 | Oil & Gas Operator | Apr 2017 |
| 30357 | Tsoco & W. M. Null | Pettus, TX 78146 | Oil & Gas Operator | Aug 2002 |
| 30358 | TSR Enterprises, LLC | Harrisville, WV 26362-7631 | Oil & Gas Operator | Dec 2021 |
| 30359 | TSW Oil & Gas, LLC | Abilene, TX 79602 | Oil & Gas Operator | Jan 2016 |
| 30360 | TSW Oil LLC | Dixon, KY 42409 | Oil Operator | Dec 2023 |
| 30361 | TT Operating, LLC | Kilgore, TX 75663 | Oil & Gas Operator | May 2025 |
| 30362 | TTK Energy LLC | Kilgore, TX 75663 | Oil Operator | May 2025 |
| 30363 | TTL Energy Resources, Inc. | Borger, TX 79008 | Oil & Gas Operator | Aug 2013 |
| 30364 | Tubbs Patrick | Neodesha, KS 66757 | Oil Operator | Sep 2008 |
| 30365 | Tuckco Petroleum Corporation | Andrews, TX 79714 | Oil & Gas Operator | May 2025 |
| 30366 | Tucker Drilling Company, Inc. | San Angelo, TX 76903 | Oil & Gas Operator | Jul 1996 |
| 30367 | Tucker Gary & Deedee | Jennings, OK 74038 | Oil & Gas Operator | Oct 2024 |
| 30368 | Tucker Operating Co., Inc. | Victoria, TX 77903 | Oil & Gas Operator | May 2025 |
| 30369 | Tucker Petroleum, Inc. | Corpus Chrsti, TX 78468 | Oil & Gas Operator | May 2025 |
| 30370 | Tucker Resources, Inc. | Wichita Falls, TX 76301 | Oil & Gas Operator | Aug 2003 |
| 30371 | Tucker Ron & Co | Norman, OK 73069-8511 | Gas Operator | Sep 2017 |
| 30372 | Tucker, Carl H., Jr. | Independence, KS 67301 | Oil Operator | Jul 1996 |
| 30373 | Tucker, Gene | | Oil & Gas Operator | Dec 2011 |
| 30374 | Tucker, Stephen A. | Independence, KS 67301 | Oil Operator | Feb 2009 |
| 30375 | Tucker, Timothy R | | Oil Operator | Feb 2025 |
| 30376 | Tucson Oil & Gas Inc | | Oil & Gas Operator | Aug 1994 |
| 30377 | Tudex Petroleum Inc | | Oil & Gas Operator | Sep 2019 |
| 30378 | Tug Fork Development | Catlettsburg, KY 41129 | Gas Operator | Dec 2021 |
| 30379 | Tug Hill Operating, LLC | Fort Worth, TX 76107 | Oil & Gas Operator | Dec 2021 |
| 30380 | Tug Oil & Gas, L.L.C. | Breckenridge, TX 76424 | Oil & Gas Operator | May 2025 |
| 30381 | Tularosa Operating Company | Kerrville, TX 78029 | Oil & Gas Operator | Mar 2024 |
| 30382 | Tuleta Energy Partners, LLC | Norman, OK 73072 | Oil & Gas Operator | May 2025 |
| 30383 | Tulip Industries, Inc. | | Oil & Gas Operator | Feb 2024 |
| 30384 | Tully Drilling Company | | Gas Operator | Dec 2021 |
| 30385 | Tulsa Energy Inc | Tulsa, OK 74133 | Oil & Gas Operator | May 2013 |
| 30386 | Tulsa Energy Partners LLC | Tulsa, OK 74103-4461 | Oil & Gas Operator | Mar 2025 |
| 30387 | Tulsa Minerals Inc | Tulsa, OK 74136-1045 | Oil & Gas Operator | May 2013 |
| 30388 | Tulum Corporation | Oklahoma City, OK 73101-0125 | Oil & Gas Operator | Jan 2025 |
| 30389 | Tumble Weed Production Co. | Borger, TX 79008 | Oil & Gas Operator | Dec 1994 |
| 30390 | Tumbleweed Energy Limited | Midland, TX 79704 | Oil & Gas Operator | Dec 2022 |
| 30391 | Tundra Energy | | Oil Operator | Jan 2025 |
| 30392 | Tundra Operating LLC | Spring, TX 77386 | Oil Operator | May 2017 |
| 30393 | Turkey Run LLC | Arcade, NY 14009 | Gas Operator | Dec 2023 |
| 30394 | Turm Oil Inc | Butler, PA 16002-0471 | Oil & Gas Operator | Dec 2024 |
| 30395 | Turnbow Drilling Co. | Holliday, TX 76366 | Oil & Gas Operator | May 2025 |
| 30396 | Turnbow John R Company | Tulsa, OK 74120-2420 | Oil & Gas Operator | Aug 2006 |
| 30397 | Turnbull Gas, LLC | North Collins, NY 14111 | Gas Operator | Dec 2023 |
| 30398 | Turnco Drilling, Inc. | Portland, OR 97208 | Oil & Gas Operator | Dec 2009 |
| 30399 | Turner Jeff | Marlow, OK 73055 | Oil & Gas Operator | Apr 2007 |
| 30400 | Turner John O | Drumright, OK 74030-1216 | Oil & Gas Operator | Feb 1998 |