| 10501 | T & I Petroleum Co., Inc. | Graham, TX 76450 | Oil & Gas Operator | Apr 2005 |
| 10502 | T & J Oil Production, L.L.C. | Lone Grove, OK 73443 | Oil & Gas Operator | Feb 2024 |
| 10503 | T & M Oil Company | Midlothian, TX 76065 | Oil & Gas Operator | May 2024 |
| 10504 | T & R Investments, Inc. | Borger, TX 79008 | Oil & Gas Operator | Nov 1995 |
| 10505 | T & S Oil & Gas, LLC | Stephenville, TX 76401 | Gas Operator | May 2024 |
| 10506 | T & T Oil Co. | San Antonio, TX 78205 | Oil & Gas Operator | Dec 2002 |
| 10507 | T & T Production Co. | Victoria, TX 77902 | Oil & Gas Operator | Feb 1995 |
| 10508 | T - C Oil Company | Refugio, TX 78377 | Oil & Gas Operator | Jan 2012 |
| 10509 | T Dozer D Oil Co. | Goree, TX 76363 | Oil & Gas Operator | May 2024 |
| 10510 | T M Hopkins Operating Co | Kilgore, TX 75663 | Oil & Gas Operator | Oct 2002 |
| 10511 | T W Clemons Operating Co., LLC | Minden, LA 71055 | Oil & Gas Operator | May 2024 |
| 10512 | T&T Energy LLC | Wooster, OH 44691 | Oil & Gas Operator | Dec 2023 |
| 10513 | T-Bar-X Limited Company | Houston, TX 77057 | Oil & Gas Operator | Dec 2005 |
| 10514 | T-C Oil Company, LLC | Refugio, TX 78377 | Oil & Gas Operator | May 2024 |
| 10515 | T-M Well Service | Jefferson, TX 75657 | Oil & Gas Operator | Sep 2004 |
| 10516 | T-M Well Service, L.L.C. | Jefferson, TX 75657 | Oil & Gas Operator | Dec 2023 |
| 10517 | T-N-T Engineering, Inc. | Fort Worth, TX 76107 | Oil & Gas Operator | May 2024 |
| 10518 | T-Square Petroleum Co. | Rising Star, TX 76471 | Oil & Gas Operator | May 2024 |
| 10519 | T-Y Development Corp | Perryton, TX 79070 | Oil & Gas Operator | May 2024 |
| 10520 | T. And M. Production | Oil City, LA 71061 | Oil & Gas Operator | May 2024 |
| 10521 | T. J. Oil And Gas, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Oct 2002 |
| 10522 | T. L. J. Incorporated | Big Lake, TX 76932 | Oil & Gas Operator | Dec 1998 |
| 10523 | T. R. Production, Inc. | Pilot Point, TX 76258 | Oil & Gas Operator | Jul 2021 |
| 10524 | T. W. Drilling Co. | Abilene, TX 79601 | Oil & Gas Operator | Aug 2002 |
| 10525 | T.D. Operating Company, Inc. | New Braunfels, TX 78130 | Oil & Gas Operator | Nov 1999 |
| 10526 | T.F. Well Service, L.L.C. | Iowa Park, TX 76367 | Oil Operator | May 2024 |
| 10527 | T.G.B., Inc. | Midland, TX 79702 | Oil & Gas Operator | May 2024 |
| 10528 | T.L.S. Oil Co. | Hawley, TX 79525 | Oil & Gas Operator | May 2024 |
| 10529 | T.O.I. | Midland, TX 79710 | Oil & Gas Operator | Mar 2001 |
| 10530 | Tab Operating, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | May 2024 |
| 10531 | Tabbs Bay Production Company | Houston, TX 77019 | Oil Operator | May 2024 |
| 10532 | Tabco Exploration Inc. | New Orleans, LA 70131 | Oil & Gas Operator | Dec 1998 |
| 10533 | Taber, Alan R. | La Vernia, TX 78121 | Oil Operator | May 2024 |
| 10534 | Tabor Creek Oil Company | Albany, TX 76430 | Oil & Gas Operator | May 2024 |
| 10535 | Tabula Rasa Energy, LLC | Allen, TX 75013 | Oil & Gas Operator | Dec 2020 |
| 10536 | Tacor Resources Inc | Midland, TX 79701 | Oil & Gas Operator | May 2024 |
| 10537 | Tactical Oil & Gas, LLC | Odessa, TX 79768 | Oil & Gas Operator | May 2024 |
| 10538 | Tactical Operating Company, LLC | Houston, TX 77042 | Oil & Gas Operator | May 2024 |
| 10539 | Taft Investment Co., Inc. | Taft, TX 78390 | Oil Operator | May 2024 |
| 10540 | Tag Enterprises Inc | Shelocta, PA 15774-0310 | Gas Operator | Dec 2016 |
| 10541 | Tag Operating Company, Inc. | Houston, TX 77092 | Oil & Gas Operator | May 2024 |
| 10542 | Tahiti PTRS Enrgy Solutions Corp | Long Beach, CA 90807 | Oil Operator | May 2024 |
| 10543 | Tahoe Energy, Inc. | Midland, TX 79703 | Oil & Gas Operator | Jul 1996 |
| 10544 | Tahoe Exploration Inc. | Abilene, TX 79608 | Oil & Gas Operator | Mar 2016 |
| 10545 | Talaria Oil & Gas LLC | Denver, CO 80203 | Oil Operator | May 2024 |
| 10546 | Talbert, Eugene Operating Co,Inc | Tyler, TX 75702 | Oil & Gas Operator | Dec 1997 |
| 10547 | Talbott, Stan C. | Midland, TX 79701 | Oil & Gas Operator | Feb 2005 |
| 10548 | Taleeho Energy Co. | Normangee, TX 77871 | Oil & Gas Operator | Jun 2003 |
| 10549 | Talisman Energy USA Inc. | The Woodlands, TX 77381 | Oil & Gas Operator | May 2016 |
| 10550 | Talisman Resources, Inc. | Argyle, TX 76226 | Oil & Gas Operator | Mar 1995 |
| 10551 | Tall City Operations III LLC | Midland, TX 79702 | Oil & Gas Operator | Jun 2023 |
| 10552 | Tall City Operations LLC | Midland, TX 79702 | Oil & Gas Operator | Feb 2016 |
| 10553 | Tall Dune Resources, LLC | Boerne, TX 78006 | Oil & Gas Operator | May 2024 |
| 10554 | Talley, Don R. | Holliday, TX 76366 | Oil & Gas Operator | Jun 2002 |
| 10555 | Talley, W.T. | Olney, TX 76374 | Oil & Gas Operator | May 2005 |
| 10556 | Tallgrass Energy, L.L.C. | Tulsa, OK 74136 | Oil & Gas Operator | May 2024 |
| 10557 | Tallgrass Production Company LLC | Santa Anna, TX 76878 | Oil & Gas Operator | Mar 2014 |
| 10558 | Talon Development Company | Boerne, TX 78006 | Oil & Gas Operator | Sep 2007 |
| 10559 | Talon Oil & Gas LLC | Dallas, TX 75243 | Oil & Gas Operator | Dec 2010 |
| 10560 | Talon Production, Inc. | Wichita Falls, TX 76301 | Oil & Gas Operator | May 2024 |
| 10561 | Talos Gulf Coast Onshore LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2023 |
| 10562 | Talus Inc | Graham, TX 76450-1210 | Oil & Gas Operator | Feb 2017 |
| 10563 | Tam2 Squared Energy Services,LLC | Ranger, TX 76470 | Oil Operator | May 2024 |
| 10564 | Tam2 Squared Operating, LLC | Ranger, TX 76470 | Oil & Gas Operator | May 2024 |
| 10565 | Tamarack Petroleum Company, Inc. | Midland, TX 79701 | Oil & Gas Operator | May 2024 |
| 10566 | Tamarron Resources, Inc. | Azle, TX 76020 | Oil & Gas Operator | May 2024 |
| 10567 | Tamer Oil & Gas | Seminole, TX 79360 | Oil & Gas Operator | May 2024 |
| 10568 | Tampke Service Co. | Devine, TX 78016 | Oil Operator | May 2024 |
| 10569 | Tana Exploration Company LLC | Dallas, TX 75219 | Oil & Gas Operator | Aug 2021 |
| 10570 | Tana Oil And Gas Corporation | Irving, TX 75062 | Oil & Gas Operator | Mar 2000 |
| 10571 | Tandem Energy Corporation | Houston, TX 77056 | Oil & Gas Operator | May 2024 |
| 10572 | Tanglehead Operating, LLC | San Antonio, TX 78209 | Oil Operator | May 2024 |
| 10573 | Tanglewood Oil & Gas Co. | Gouldbusk, TX 76845 | Oil & Gas Operator | May 2024 |
| 10574 | Tanglewood Oil & Gas LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Oct 2017 |
| 10575 | Tankersley, D. C. | Abilene, TX 79601 | Oil & Gas Operator | Sep 2002 |
| 10576 | Tanos Exploration II, LLC | Tyler, TX 75701 | Oil & Gas Operator | Sep 2023 |
| 10577 | Tanos Exploration, LLC | Houston, TX 77010 | Oil & Gas Operator | Oct 2018 |
| 10578 | Tanos Production, Inc. | Houston, TX 77077 | Oil & Gas Operator | Aug 2003 |
| 10579 | Taos Resources Operating Co LLC | Houston, TX 77037 | Oil & Gas Operator | Dec 2019 |
| 10580 | Tap Operating Company, Inc. | Mexia, TX 76667 | Oil & Gas Operator | May 1995 |
| 10581 | Tap Rock Operating, LLC | Golden, CO 80401 | Oil & Gas Operator | May 2024 |
| 10582 | Tapstone Energy LLC | Oklahoma City, OK 73101 | Oil & Gas Operator | Feb 2024 |
| 10583 | Tara Company, The | Wichita Falls, TX 76301 | Oil Operator | Sep 2003 |
| 10584 | Tara Operating Co. | Lamesa, TX 79331 | Oil & Gas Operator | Aug 2003 |
| 10585 | Tare Resources, LLC | Corpus Chrsti, TX 78426 | Oil & Gas Operator | May 2024 |
| 10586 | Targa Midstream Services LLC | Houston, TX 77002 | Oil Operator | Mar 2023 |
| 10587 | Targa Pipeline Mid-Continent LLC | Sulphur, LA 70665 | Oil & Gas Operator | Jun 2018 |
| 10588 | Targo Oil & Gas, Inc. | Abilene, TX 79608 | Oil & Gas Operator | May 2024 |
| 10589 | Tarpon Oil & Gas Co. | Fort Worth, TX 76147 | Oil & Gas Operator | May 2024 |
| 10590 | Tarpon Oil Company | Fort Worth, TX 76107 | Oil & Gas Operator | Mar 2017 |
| 10591 | Tarrant Operators, Inc. | Fort Worth, TX 76107 | Oil & Gas Operator | Feb 1994 |
| 10592 | Tartan Resources Corporation | Houston, TX 77251 | Oil & Gas Operator | Oct 1995 |
| 10593 | Tasca Exploration Company | Houston, TX 77257 | Oil & Gas Operator | Jun 2002 |
| 10594 | Tascosa Petroleum Corporation | Amarillo, TX 79105 | Oil & Gas Operator | May 2024 |
| 10595 | Tat, Inc. | Oklahoma City, OK 73127 | Oil & Gas Operator | Feb 2023 |
| 10596 | Tatanka Operating, LLC | Whitesboro, TX 76273 | Oil & Gas Operator | May 2024 |
| 10597 | Tate, Larry V. Operating, Inc. | Kilgore, TX 75662 | Oil & Gas Operator | Apr 2002 |
| 10598 | Taubert & Steed | Wichita Falls, TX 76301 | Oil & Gas Operator | Aug 2001 |
| 10599 | Taurus Exploration U.S.A., Inc. | Midland, TX 79705 | Oil & Gas Operator | Nov 1998 |
| 10600 | Taurus Minerals, Inc. | Midland, TX 79702 | Oil & Gas Operator | May 2024 |