| 601 | Trek Resources, Inc. | Dallas, TX 75207 | Oil & Gas Operator | Dec 2024 |
| 602 | Tren Energy LLC | El Paso, TX 79912 | Oil Operator | Dec 2024 |
| 603 | Trend Exploration Company | Midland, TX 79701 | Oil & Gas Operator | Mar 2008 |
| 604 | Trend Exploration I LLC | Midland, TX 79701 | Oil & Gas Operator | May 2011 |
| 605 | Trenna Oil Inc. | Midland, TX 79702 | Oil & Gas Operator | Dec 2013 |
| 606 | Tres Azores Oil & Gas, Inc. | Fort Worth, TX 76185 | Oil & Gas Operator | Aug 2003 |
| 607 | Tres Operating Co., LLC | Katy, TX 77494 | Oil Operator | Dec 2024 |
| 608 | Tres Piedras, Inc. | Wichita Falls, TX 76301 | Oil & Gas Operator | Apr 1999 |
| 609 | Tres Roughneckas WTX LLC | Houston, TX 77009 | Oil Operator | Dec 2024 |
| 610 | Tresami, Inc. | Jacksboro, TX 76458 | Oil & Gas Operator | Dec 2024 |
| 611 | Trey Exploration, Inc. | San Angelo, TX 76901 | Oil & Gas Operator | Dec 2020 |
| 612 | Trey Operating Company | MC Camey, TX 79752 | Oil Operator | Jan 2016 |
| 613 | Trey Resources Inc. | Midland, TX 79710 | Oil & Gas Operator | Aug 2024 |
| 614 | Tri "M" Oil & Gas | Muenster, TX 76252 | Oil & Gas Operator | Dec 2024 |
| 615 | Tri City Oil Co., LLC | Kountze, TX 77625 | Oil Operator | Dec 2024 |
| 616 | Tri Energy Resources, Inc. | Norman, OK 73070 | Oil Operator | Dec 2024 |
| 617 | Tri Sportsmen Energy, Inc. | Austin, TX 78746 | Oil & Gas Operator | Dec 2024 |
| 618 | Tri Star Operating, Inc. | Arlington, TX 76012 | Oil & Gas Operator | Jan 2002 |
| 619 | Tri-Am Operating Company | Frankston, TX 75763 | Oil & Gas Operator | Dec 2024 |
| 620 | Tri-C Resources, Inc. | Houston, TX 77024 | Oil & Gas Operator | Aug 2009 |
| 621 | Tri-C Resources, LLC | Houston, TX 77024 | Oil & Gas Operator | Dec 2024 |
| 622 | Tri-County Operating Company | Seguin, TX 78156 | Gas Operator | Feb 1997 |
| 623 | Tri-Dyne Resources, Inc. | Southern Pine, NC 28387 | Oil & Gas Operator | Feb 2000 |
| 624 | Tri-Ex Petroleum, L.P. | Amarillo, TX 79101 | Oil & Gas Operator | Jan 2013 |
| 625 | Tri-Force Operating, L.L.C. | Royse City, TX 75189 | Oil & Gas Operator | Dec 2024 |
| 626 | Tri-K Production Company, Inc. | Olney, TX 76374 | Oil & Gas Operator | Apr 1996 |
| 627 | Tri-State Exploration & Prod Inc | Marshall, TX 75671 | Oil & Gas Operator | Aug 2003 |
| 628 | Tri-State Resources, Inc. | Tyler, TX 75711 | Oil & Gas Operator | Sep 2012 |
| 629 | Tri-State Sales & Production | Rodessa, LA 71069 | Oil & Gas Operator | Dec 2008 |
| 630 | Tri-Tex Exploration LTD | Abilene, TX 79608 | Oil Operator | Apr 2019 |
| 631 | Tri-Union Development Corp. | Houston, TX 77002 | Oil & Gas Operator | Dec 2024 |
| 632 | Tri-W Oil | Luling, TX 78648 | Oil Operator | Dec 2024 |
| 633 | Tri-W Oil, Inc. | Luling, TX 78648 | Oil Operator | Apr 2007 |
| 634 | Triad Energy Corporation | Houston, TX 77057 | Oil & Gas Operator | Oct 2011 |
| 635 | Triad O&G, LLC | Dallas, TX 75225 | Oil & Gas Operator | Dec 2024 |
| 636 | Triag Energy Operating, Inc. | Midland, TX 79701 | Oil & Gas Operator | Jun 2014 |
| 637 | Triangle Development Co | Mahtomedi, MN 55115 | Gas Operator | Feb 1982 |
| 638 | Triangle Energy Co. | Pampa, TX 79066 | Oil & Gas Operator | Nov 2000 |
| 639 | Triangle P Development Corp. | Bronte, TX 76933 | Oil & Gas Operator | Dec 2024 |
| 640 | Triangle Three Resources L.L.C. | Dallas, TX 75240 | Oil & Gas Operator | Dec 2024 |
| 641 | Triax Energy LLC | Kilgore, TX 75663 | Oil & Gas Operator | Dec 2018 |
| 642 | Trich Production, Inc. | Longview, TX 75606 | Oil & Gas Operator | Jul 2024 |
| 643 | Trico Energy LLC | Hager Hill, KY 41222 | Oil Operator | Dec 2018 |
| 644 | Trico Oil & Gas Inc. | Kilgore, TX 75662 | Oil & Gas Operator | Dec 2024 |
| 645 | Trident Corporation | Woodsboro, TX 78393 | Oil & Gas Operator | Dec 2024 |
| 646 | Triesco, Inc. | Midland, TX 79702 | Oil & Gas Operator | Jun 1996 |
| 647 | Trigeo Energy, LLC | Addison, TX 75001 | Oil & Gas Operator | Dec 2024 |
| 648 | Trigo Oil And Gas, LLC | Amarillo, TX 79101 | Oil & Gas Operator | Mar 2022 |
| 649 | Trilogy Operating, Inc. | Midland, TX 79708 | Oil & Gas Operator | Dec 2024 |
| 650 | Trinidad Energy, LLC | Midland, TX 79708 | Oil & Gas Operator | Dec 2024 |
| 651 | Trinidad Exploration, Inc. | Tyler, TX 75703 | Oil & Gas Operator | Mar 2008 |
| 652 | Trinidad Petroleum, Inc. | Austin, TX 78711 | Oil & Gas Operator | Dec 2024 |
| 653 | Trinidad Resources, LLC | San Antonio, TX 78217 | Oil & Gas Operator | Dec 2024 |
| 654 | Trinity Bay Oil & Gas, Inc. | Lubbock, TX 79416 | Oil & Gas Operator | Dec 2024 |
| 655 | Trinity Eor, LLC | Midland, TX 79701 | Oil & Gas Operator | Jan 2019 |
| 656 | Trinity Gas Corporation | Edmond, OK 73003 | Oil & Gas Operator | Dec 2024 |
| 657 | Trinity Gas Storage, LLC | Flower Mound, TX 75028 | Oil & Gas Operator | Dec 2024 |
| 658 | Trinity Minerals&Operating Corp. | Abilene, TX 79605 | Oil & Gas Operator | Dec 1995 |
| 659 | Trinity Operating & Prod., Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 660 | Trinity Operating (Usg), LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2024 |
| 661 | Trinity Resources, Inc. | Houston, TX 77277 | Oil & Gas Operator | May 2020 |
| 662 | Trinity River Energy Oper, LLC | Houston, TX 77008 | Oil & Gas Operator | May 2018 |
| 663 | Trinity River Operating Company | Oklahoma City, OK 73147 | Oil & Gas Operator | Dec 2024 |
| 664 | Trio Consulting & Management,LLC | Wichita Falls, TX 76307 | Oil & Gas Operator | Dec 2024 |
| 665 | Trio Operating Company, Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 2006 |
| 666 | Trio Production Company, LLC | Stephens, AR 71764 | Oil Operator | Jul 2024 |
| 667 | Triple "B" Production DRLG Inc | Poynor, TX 75782 | Oil & Gas Operator | Sep 2022 |
| 668 | Triple "G" Oil Company | Clyde, TX 79510 | Oil & Gas Operator | Apr 1999 |
| 669 | Triple "N" Services, Inc. | Midland, TX 79702 | Oil & Gas Operator | Dec 2024 |
| 670 | Triple "S" Gas, Inc. | Dallas, TX 75355 | Oil & Gas Operator | Dec 2024 |
| 671 | Triple "S" Resources Inc | Sapulpa, OK 74066 | Oil & Gas Operator | Jun 1995 |
| 672 | Triple "W" Oil Company | Graham, TX 76450 | Oil & Gas Operator | Dec 2024 |
| 673 | Triple 'A' Energy, Inc. | Boerne, TX 78006 | Oil & Gas Operator | Dec 2024 |
| 674 | Triple C Oil Inc. | Lockhart, TX 78644 | Oil Operator | Aug 2019 |
| 675 | Triple Crown Resources, LLC | Dallas, TX 75201 | Oil & Gas Operator | Dec 2024 |
| 676 | Triple D Oil & Gas Co., Inc. | Brownwood, TX 76801 | Oil & Gas Operator | Dec 2024 |
| 677 | Triple G Oil & Gas | Sonora, TX 76950 | Oil & Gas Operator | Oct 2022 |
| 678 | Triple G Well Service, Inc. | Muenster, TX 76252 | Oil & Gas Operator | Dec 2024 |
| 679 | Triple H Production | Stockdale, TX 78160 | Oil Operator | Dec 2024 |
| 680 | Triple J Investments Inc | Longview, TX 75606 | Oil & Gas Operator | Feb 2023 |
| 681 | Triple J Oil Co. | Pampa, TX 79065 | Oil & Gas Operator | Aug 1996 |
| 682 | Triple L Oil Company | Corpus Chrsti, TX 78469 | Oil & Gas Operator | Jan 1998 |
| 683 | Triple L Operating Company LLC | Kilgore, TX 75663 | Oil Operator | Dec 2024 |
| 684 | Triple M Saltwater Disposal, LP | Kilgore, TX 75663 | Oil Operator | Dec 2024 |
| 685 | Triple Singleton, Inc. | Santa Fe, TX 77510 | Oil & Gas Operator | Dec 2020 |
| 686 | Triple T Resources, LP | Dallas, TX 75205 | Oil & Gas Operator | Jul 2024 |
| 687 | Tripledee Drilling Co Inc | Ardmore, OK 73402-1888 | Oil & Gas Operator | Dec 2015 |
| 688 | Tripower Resources LLC | Ardmore, OK 73402 | Oil & Gas Operator | Dec 2024 |
| 689 | Tripower Resources, Inc. | Ardmore, OK 73402 | Oil & Gas Operator | Mar 2020 |
| 690 | Tripp & Sons, LLC | Odessa, TX 79768 | Oil & Gas Operator | Dec 2024 |
| 691 | Tripp Oil Company Inc | Houston, TX 77023 | Oil & Gas Operator | Jan 1992 |
| 692 | Tristar Exploration, Inc | Pflugerville, TX 78660 | Oil & Gas Operator | Dec 2024 |
| 693 | Tristar Oil & Gas | Freer, TX 78357 | Oil & Gas Operator | Dec 2024 |
| 694 | Tritex Production Co. | Iowa Park, TX 76367 | Oil & Gas Operator | Jan 2013 |
| 695 | Tritex Resources, L.L.C. | Kilgore, TX 75663 | Oil & Gas Operator | Dec 2009 |
| 696 | Triton Energy LLC | Wortham, TX 76693 | Oil & Gas Operator | Dec 2024 |
| 697 | Triton Oil & Gas Corp. | Houston, TX 77002 | Oil & Gas Operator | Nov 2014 |
| 698 | Triton Operating LLC | Wichita Falls, TX 76310 | Oil & Gas Operator | Dec 2024 |
| 699 | Trium, LTD. | Laredo, TX 78041 | Oil Operator | Dec 2024 |
| 700 | Triumph Exploration, Inc. | Midland, TX 79702 | Oil & Gas Operator | Dec 2024 |