| 11501 | Tri-Union Development Corp. | Houston, TX 77002 | Oil & Gas Operator | Apr 2025 |
| 11502 | Tri-W Oil | Luling, TX 78648 | Oil Operator | Apr 2025 |
| 11503 | Tri-W Oil, Inc. | Luling, TX 78648 | Oil Operator | Apr 2007 |
| 11504 | Triad Energy Corporation | Houston, TX 77057 | Oil & Gas Operator | Oct 2011 |
| 11505 | Triad O&G, LLC | Dallas, TX 75225 | Oil & Gas Operator | Apr 2025 |
| 11506 | Triag Energy Operating, Inc. | Midland, TX 79701 | Oil & Gas Operator | Jun 2014 |
| 11507 | Triangle Development Co | Mahtomedi, MN 55115 | Gas Operator | Feb 1982 |
| 11508 | Triangle Energy Co. | Pampa, TX 79066 | Oil & Gas Operator | Nov 2000 |
| 11509 | Triangle P Development Corp. | Bronte, TX 76933 | Oil & Gas Operator | Apr 2025 |
| 11510 | Triangle Three Resources L.L.C. | Dallas, TX 75240 | Oil & Gas Operator | Apr 2025 |
| 11511 | Triax Energy LLC | Kilgore, TX 75663 | Oil & Gas Operator | Dec 2018 |
| 11512 | Trich Production, Inc. | Longview, TX 75606 | Oil & Gas Operator | Jan 2025 |
| 11513 | Trico Energy LLC | Hager Hill, KY 41222 | Oil Operator | Dec 2018 |
| 11514 | Trico Oil & Gas Inc. | Kilgore, TX 75662 | Oil & Gas Operator | Apr 2025 |
| 11515 | Trident Corporation | Woodsboro, TX 78393 | Oil & Gas Operator | Apr 2025 |
| 11516 | Triesco, Inc. | Midland, TX 79702 | Oil & Gas Operator | Jun 1996 |
| 11517 | Trigeo Energy, LLC | Addison, TX 75001 | Oil & Gas Operator | Apr 2025 |
| 11518 | Trigo Oil And Gas, LLC | Amarillo, TX 79101 | Oil & Gas Operator | Mar 2022 |
| 11519 | Trilogy Operating, Inc. | Midland, TX 79708 | Oil & Gas Operator | Apr 2025 |
| 11520 | Trinidad Energy, LLC | Midland, TX 79708 | Oil & Gas Operator | Apr 2025 |
| 11521 | Trinidad Exploration, Inc. | Tyler, TX 75703 | Oil & Gas Operator | Mar 2008 |
| 11522 | Trinidad Petroleum, Inc. | Austin, TX 78711 | Oil & Gas Operator | Apr 2025 |
| 11523 | Trinidad Resources, LLC | San Antonio, TX 78217 | Oil & Gas Operator | Apr 2025 |
| 11524 | Trinity Bay Oil & Gas, Inc. | Lubbock, TX 79416 | Oil & Gas Operator | Apr 2025 |
| 11525 | Trinity Eor, LLC | Midland, TX 79701 | Oil & Gas Operator | Jan 2019 |
| 11526 | Trinity Gas Corporation | Edmond, OK 73003 | Oil & Gas Operator | Apr 2025 |
| 11527 | Trinity Gas Storage, LLC | Flower Mound, TX 75028 | Oil & Gas Operator | Apr 2025 |
| 11528 | Trinity Minerals&Operating Corp. | Abilene, TX 79605 | Oil & Gas Operator | Dec 1995 |
| 11529 | Trinity Operating & Prod., Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 11530 | Trinity Operating (Usg), LLC | Houston, TX 77002 | Oil & Gas Operator | Apr 2025 |
| 11531 | Trinity Resources, Inc. | Houston, TX 77277 | Oil & Gas Operator | May 2020 |
| 11532 | Trinity River Energy Oper, LLC | Houston, TX 77008 | Oil & Gas Operator | May 2018 |
| 11533 | Trinity River Energy, LLC | Houston, TX 77094 | Oil & Gas Operator | Aug 2015 |
| 11534 | Trinity River Operating Company | Oklahoma City, OK 73147 | Oil & Gas Operator | Apr 2025 |
| 11535 | Trio Consulting & Management,LLC | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 2025 |
| 11536 | Trio Operating Company, Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 2006 |
| 11537 | Trio Production Company, LLC | Stephens, AR 71764 | Oil Operator | Jan 2025 |
| 11538 | Triple "B" Production DRLG Inc | Poynor, TX 75782 | Oil & Gas Operator | Sep 2022 |
| 11539 | Triple "G" Oil Company | Clyde, TX 79510 | Oil & Gas Operator | Apr 1999 |
| 11540 | Triple "N" Services, Inc. | Midland, TX 79702 | Oil & Gas Operator | Apr 2025 |
| 11541 | Triple "S" Gas, Inc. | Louisville, KY 40255 | Oil & Gas Operator | Apr 2025 |
| 11542 | Triple "S" Resources Inc | Sapulpa, OK 74066 | Oil & Gas Operator | Jun 1995 |
| 11543 | Triple "W" Oil Company | Graham, TX 76450 | Oil & Gas Operator | Apr 2025 |
| 11544 | Triple 'A' Energy, Inc. | Boerne, TX 78006 | Oil & Gas Operator | Apr 2025 |
| 11545 | Triple C Oil Inc. | Lockhart, TX 78644 | Oil Operator | Aug 2019 |
| 11546 | Triple Crown Resources, LLC | Dallas, TX 75201 | Oil & Gas Operator | Apr 2025 |
| 11547 | Triple D Oil & Gas Co., Inc. | Brownwood, TX 76801 | Oil & Gas Operator | Apr 2025 |
| 11548 | Triple G Oil & Gas | Sonora, TX 76950 | Oil & Gas Operator | Oct 2022 |
| 11549 | Triple G Well Service, Inc. | Muenster, TX 76252 | Oil & Gas Operator | Apr 2025 |
| 11550 | Triple H Production | Stockdale, TX 78160 | Oil Operator | Apr 2025 |
| 11551 | Triple J Investments Inc | Longview, TX 75606 | Oil & Gas Operator | Feb 2023 |
| 11552 | Triple J Oil Co. | Pampa, TX 79065 | Oil & Gas Operator | Aug 1996 |
| 11553 | Triple L Oil Company | Corpus Chrsti, TX 78469 | Oil & Gas Operator | Jan 1998 |
| 11554 | Triple L Operating Company LLC | Kilgore, TX 75663 | Oil Operator | Apr 2025 |
| 11555 | Triple M Saltwater Disposal, LP | Kilgore, TX 75663 | Oil Operator | Apr 2025 |
| 11556 | Triple Singleton, Inc. | Santa Fe, TX 77510 | Oil & Gas Operator | Dec 2020 |
| 11557 | Triple T Resources, LP | Dallas, TX 75205 | Oil & Gas Operator | Dec 2024 |
| 11558 | Tripledee Drilling Co Inc | Ardmore, OK 73402-1888 | Oil & Gas Operator | Dec 2015 |
| 11559 | Tripod Oil And Gas 3 LLC | Tulsa, OK 74152 | Oil Operator | Apr 2025 |
| 11560 | Tripower Resources LLC | Ardmore, OK 73402 | Oil & Gas Operator | Apr 2025 |
| 11561 | Tripower Resources, Inc. | Ardmore, OK 73402 | Oil & Gas Operator | Mar 2020 |
| 11562 | Tripp & Sons, LLC | Odessa, TX 79768 | Oil & Gas Operator | Apr 2025 |
| 11563 | Tripp Oil Company Inc | Houston, TX 77023 | Oil & Gas Operator | Jan 1992 |
| 11564 | Tristar Exploration, Inc | Pflugerville, TX 78660 | Oil & Gas Operator | Apr 2025 |
| 11565 | Tristar Oil & Gas | Freer, TX 78357 | Oil & Gas Operator | Apr 2025 |
| 11566 | Tritex Production Co. | Iowa Park, TX 76367 | Oil & Gas Operator | Jan 2013 |
| 11567 | Tritex Resources, L.L.C. | Kilgore, TX 75663 | Oil & Gas Operator | Dec 2009 |
| 11568 | Triton Energy LLC | Wortham, TX 76693 | Oil & Gas Operator | Apr 2025 |
| 11569 | Triton Oil & Gas Corp. | Houston, TX 77002 | Oil & Gas Operator | Nov 2014 |
| 11570 | Triton Operating LLC | Wichita Falls, TX 76310 | Oil & Gas Operator | Apr 2025 |
| 11571 | Trium Energy, Inc. | Laredo, TX 78041 | Gas Operator | Jul 2011 |
| 11572 | Trium, LTD. | Laredo, TX 78041 | Oil Operator | Apr 2025 |
| 11573 | Triumph Exploration, Inc. | Midland, TX 79702 | Oil & Gas Operator | Apr 2025 |
| 11574 | Triumph Oil Company | Dallas, TX 75201 | Oil & Gas Operator | Jun 1994 |
| 11575 | Trivestco Energy Company | Ponca City, OK 74601 | Oil & Gas Operator | Feb 2025 |
| 11576 | Trivista Operating LLC | Giddings, TX 78942 | Oil & Gas Operator | Apr 2025 |
| 11577 | Trivium Operating, LLC | Fort Worth, TX 76107 | Oil & Gas Operator | Apr 2025 |
| 11578 | Trojan Oil And Gas | White Deer, TX 79097 | Oil & Gas Operator | Dec 1994 |
| 11579 | Trojan Oil Company, LLC | Big Lake, TX 76932 | Oil Operator | Apr 2025 |
| 11580 | Troubadour Operating, LLC | Houston, TX 77019 | Oil & Gas Operator | Apr 2025 |
| 11581 | Troup Oil & Gas, LLC | Oklahoma City, OK 73112 | Oil Operator | Apr 2025 |
| 11582 | Trousil & Associates, Inc. | Steamboat SPG, CO 80477 | Oil & Gas Operator | Dec 2006 |
| 11583 | Trout Oil Company, Inc. | Odessa, TX 79762 | Oil & Gas Operator | Apr 2025 |
| 11584 | TRP Operating LLC | Houston, TX 77024 | Oil & Gas Operator | Apr 2025 |
| 11585 | True Oil Company | Casper, WY 82602 | Oil & Gas Operator | Aug 2003 |
| 11586 | True Oil Company LLC | Midland, TX 79701 | Oil & Gas Operator | Mar 2016 |
| 11587 | True Wolf Operating, LLC | Iowa Park, TX 76367 | Oil Operator | Apr 2025 |
| 11588 | Trueblood Resources, Inc. | Denver, CO 80222 | Oil & Gas Operator | Apr 2025 |
| 11589 | Trump Energy | Austin, TX 78734 | Oil & Gas Operator | Mar 2008 |
| 11590 | Trumter Petroleum Corporation | Fort Worth, TX 76185 | Oil & Gas Operator | Aug 1998 |
| 11591 | Trust Oil Co. | Pine, CO 80470 | Oil & Gas Operator | Apr 2025 |
| 11592 | Trustar Operating Company Inc. | Austin, TX 78750 | Oil Operator | Apr 2025 |
| 11593 | Trutex Operating, LLC | Haltom City, TX 76117 | Oil & Gas Operator | Apr 2025 |
| 11594 | Truth Resources LP | Houston, TX 77090 | Oil Operator | Sep 2021 |
| 11595 | Tryall, Inc | Porter, TX 77365 | Oil & Gas Operator | Apr 2025 |
| 11596 | Tryco Exploration, LLC | Plano, TX 75026 | Oil & Gas Operator | Nov 2006 |
| 11597 | Tryma Operating | Borger, TX 79008 | Oil & Gas Operator | Apr 2025 |
| 11598 | TS & T Drilling, Inc. | Wichita Falls, TX 76301 | Oil & Gas Operator | Mar 2016 |
| 11599 | Tsar Energy, LLC | Dallas, TX 75205 | Oil & Gas Operator | Apr 2025 |
| 11600 | Tsar Operating Company | Fort Worth, TX 76116 | Oil & Gas Operator | Jul 2021 |