| 701 | Trio Operating Company, Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 2006 |
| 702 | Trio Production Company, LLC | Stephens, AR 71764 | Oil Operator | Jan 2025 |
| 703 | Triple "B" Production DRLG Inc | Poynor, TX 75782 | Oil & Gas Operator | Sep 2022 |
| 704 | Triple "G" Oil Company | Clyde, TX 79510 | Oil & Gas Operator | Apr 1999 |
| 705 | Triple "N" Services, Inc. | Midland, TX 79702 | Oil & Gas Operator | Feb 2026 |
| 706 | Triple "S" Gas, Inc. | Louisville, KY 40255 | Oil & Gas Operator | Jan 2026 |
| 707 | Triple "S" Resources Inc | Sapulpa, OK 74066 | Oil & Gas Operator | Jun 1995 |
| 708 | Triple "W" Oil Company | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 709 | Triple 'A' Energy, Inc. | Boerne, TX 78006 | Oil & Gas Operator | Feb 2026 |
| 710 | Triple C Oil Inc. | Lockhart, TX 78644 | Oil Operator | Aug 2019 |
| 711 | Triple Crown Resources, LLC | Dallas, TX 75201 | Oil & Gas Operator | Feb 2026 |
| 712 | Triple D Oil & Gas Co., Inc. | Brownwood, TX 76801 | Oil & Gas Operator | Feb 2026 |
| 713 | Triple G Oil & Gas | Sonora, TX 76950 | Oil & Gas Operator | Oct 2022 |
| 714 | Triple G Well Service, Inc. | Muenster, TX 76252 | Oil & Gas Operator | Feb 2026 |
| 715 | Triple H Production | Stockdale, TX 78160 | Oil Operator | Feb 2026 |
| 716 | Triple J Investments Inc | Longview, TX 75606 | Oil & Gas Operator | Feb 2023 |
| 717 | Triple J Oil Co. | Pampa, TX 79065 | Oil & Gas Operator | Aug 1996 |
| 718 | Triple L Oil Company | Corpus Chrsti, TX 78469 | Oil & Gas Operator | Jan 1998 |
| 719 | Triple L Operating Company LLC | Kilgore, TX 75663 | Oil Operator | Feb 2026 |
| 720 | Triple M Saltwater Disposal, LP | Kilgore, TX 75663 | Oil Operator | Feb 2026 |
| 721 | Triple Singleton, Inc. | Santa Fe, TX 77510 | Oil & Gas Operator | Dec 2020 |
| 722 | Triple T Resources, LP | Dallas, TX 75205 | Oil & Gas Operator | Sep 2025 |
| 723 | Tripledee Drilling Co Inc | Ardmore, OK 73402-1888 | Oil & Gas Operator | Dec 2015 |
| 724 | Tripod Oil And Gas 3 LLC | Tulsa, OK 74152 | Oil Operator | Feb 2026 |
| 725 | Tripower Resources LLC | Ardmore, OK 73402 | Oil & Gas Operator | Feb 2026 |
| 726 | Tripower Resources, Inc. | Ardmore, OK 73402 | Oil & Gas Operator | Mar 2020 |
| 727 | Tripp & Sons, LLC | Odessa, TX 79768 | Oil & Gas Operator | Feb 2026 |
| 728 | Tripp Oil Company Inc | Houston, TX 77023 | Oil & Gas Operator | Jan 1992 |
| 729 | Tristar Exploration, Inc | Pflugerville, TX 78660 | Oil & Gas Operator | Feb 2026 |
| 730 | Tristar Oil & Gas | Freer, TX 78357 | Oil & Gas Operator | Feb 2026 |
| 731 | Tritex Production Co. | Iowa Park, TX 76367 | Oil & Gas Operator | Jan 2013 |
| 732 | Tritex Resources, L.L.C. | Kilgore, TX 75663 | Oil & Gas Operator | Dec 2009 |
| 733 | Triton Energy LLC | Wortham, TX 76693 | Oil & Gas Operator | Feb 2026 |
| 734 | Triton Oil & Gas Corp. | Houston, TX 77002 | Oil & Gas Operator | Nov 2014 |
| 735 | Triton Operating LLC | Wichita Falls, TX 76310 | Oil & Gas Operator | Feb 2026 |
| 736 | Trium Energy, Inc. | Laredo, TX 78041 | Gas Operator | Jul 2011 |
| 737 | Trium, LTD. | Laredo, TX 78041 | Oil Operator | Feb 2026 |
| 738 | Triumph Exploration, Inc. | Midland, TX 79702 | Oil & Gas Operator | Feb 2026 |
| 739 | Triumph Oil Company | Dallas, TX 75201 | Oil & Gas Operator | Jun 1994 |
| 740 | Trivestco Energy Company | Ponca City, OK 74601 | Oil & Gas Operator | Dec 2025 |
| 741 | Trivista Operating LLC | Giddings, TX 78942 | Oil & Gas Operator | Feb 2026 |
| 742 | Trivium Operating, LLC | Fort Worth, TX 76107 | Oil & Gas Operator | Feb 2026 |
| 743 | Trojan Oil And Gas | White Deer, TX 79097 | Oil & Gas Operator | Dec 1994 |
| 744 | Trojan Oil Company, LLC | Big Lake, TX 76932 | Oil Operator | Feb 2026 |
| 745 | Troubadour Operating, LLC | Houston, TX 77019 | Oil & Gas Operator | Feb 2026 |
| 746 | Trout Oil Company, Inc. | Odessa, TX 79762 | Oil & Gas Operator | Feb 2026 |
| 747 | TRP Operating LLC | Houston, TX 77024 | Oil & Gas Operator | Feb 2026 |
| 748 | True Oil Company | Casper, WY 82602 | Oil & Gas Operator | Aug 2003 |
| 749 | True Oil Company LLC | Midland, TX 79701 | Oil & Gas Operator | Mar 2016 |
| 750 | True Wolf Operating, LLC | Iowa Park, TX 76367 | Oil Operator | Feb 2026 |
| 751 | Trueblood Resources, Inc. | Denver, CO 80222 | Oil & Gas Operator | Feb 2026 |
| 752 | Trump Energy | Austin, TX 78734 | Oil & Gas Operator | Mar 2008 |
| 753 | Trumter Petroleum Corporation | Fort Worth, TX 76185 | Oil & Gas Operator | Aug 1998 |
| 754 | Trust Oil Co. | Pine, CO 80470 | Oil & Gas Operator | Feb 2026 |
| 755 | Trustar Operating Company Inc. | Austin, TX 78750 | Oil Operator | Feb 2026 |
| 756 | Trutex Operating, LLC | Haltom City, TX 76117 | Oil & Gas Operator | Feb 2026 |
| 757 | Tryall, Inc | Porter, TX 77365 | Oil & Gas Operator | Feb 2026 |
| 758 | Tryco Exploration, LLC | Plano, TX 75026 | Oil & Gas Operator | Nov 2006 |
| 759 | Tryma Operating | Borger, TX 79008 | Oil & Gas Operator | Feb 2026 |
| 760 | TS & T Drilling, Inc. | Wichita Falls, TX 76301 | Oil & Gas Operator | Mar 2016 |
| 761 | TS Oil, LLC | Fort Worth, TX 76114 | Oil & Gas Operator | Feb 2026 |
| 762 | Tsar Energy, LLC | Dallas, TX 75205 | Oil & Gas Operator | Feb 2026 |
| 763 | Tsar Operating Company | Fort Worth, TX 76116 | Oil & Gas Operator | Jul 2021 |
| 764 | Tschoepe, Arthur J. | Leakey, TX 78873 | Oil & Gas Operator | Jun 2001 |
| 765 | TSF Operating | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 766 | Tsoco | Tuleta, TX 78162 | Oil & Gas Operator | Apr 2017 |
| 767 | Tsoco & W. M. Null | Pettus, TX 78146 | Oil & Gas Operator | Aug 2002 |
| 768 | TSW Oil & Gas, LLC | Abilene, TX 79602 | Oil & Gas Operator | Jan 2016 |
| 769 | TT Operating, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Feb 2026 |
| 770 | TTK Energy LLC | Kilgore, TX 75663 | Oil Operator | Feb 2026 |
| 771 | TTL Energy Resources, Inc. | Borger, TX 79008 | Oil & Gas Operator | Aug 2013 |
| 772 | Tuckco Petroleum Corporation | Andrews, TX 79714 | Oil & Gas Operator | Feb 2026 |
| 773 | Tucker Drilling Company, Inc. | San Angelo, TX 76903 | Oil & Gas Operator | Jul 1996 |
| 774 | Tucker Operating Co., Inc. | Victoria, TX 77903 | Oil & Gas Operator | Feb 2026 |
| 775 | Tucker Petroleum, Inc. | Corpus Chrsti, TX 78468 | Oil & Gas Operator | Feb 2026 |
| 776 | Tucker Resources, Inc. | Wichita Falls, TX 76301 | Oil & Gas Operator | Aug 2003 |
| 777 | Tug Hill Operating, LLC | Fort Worth, TX 76107 | Oil & Gas Operator | Dec 2021 |
| 778 | Tug Oil & Gas, L.L.C. | Breckenridge, TX 76424 | Oil & Gas Operator | Feb 2026 |
| 779 | Tularosa Operating Company | Kerrville, TX 78029 | Oil & Gas Operator | Mar 2024 |
| 780 | Tuleta Energy Partners, LLC | Norman, OK 73072 | Oil & Gas Operator | Feb 2026 |
| 781 | Tulsa Minerals Inc | Tulsa, OK 74136-1045 | Oil & Gas Operator | May 2013 |
| 782 | Tumble Weed Production Co. | Borger, TX 79008 | Oil & Gas Operator | Dec 1994 |
| 783 | Tumbleweed Energy Limited | Midland, TX 79704 | Oil & Gas Operator | Dec 2022 |
| 784 | Tundra Operating LLC | Spring, TX 77386 | Oil Operator | May 2017 |
| 785 | Turnbow Drilling Co. | Holliday, TX 76366 | Oil & Gas Operator | Jul 2025 |
| 786 | Turner Production | Big Lake, TX 76932 | Oil & Gas Operator | Feb 2026 |
| 787 | Turner, D. Ann Garrett, Est. Of | Big Spring, TX 79721 | Oil & Gas Operator | Jan 1999 |
| 788 | Turner, Greg | Cross Plains, TX 76443 | Oil & Gas Operator | Feb 2026 |
| 789 | Turner, M. O. | San Antonio, TX 78278 | Oil & Gas Operator | Apr 2003 |
| 790 | Turner, Randy | Olney, TX 76374 | Oil & Gas Operator | Jan 2005 |
| 791 | Turning Point Oil, Inc. | Eastland, TX 76448 | Oil & Gas Operator | Jan 2021 |
| 792 | Turquoise Bay Corporation | Odessa, TX 79760 | Oil & Gas Operator | Dec 2018 |
| 793 | Turrentine Oil & Gas, Inc. | Horseshoe Bay, TX 78657 | Oil & Gas Operator | Oct 2019 |
| 794 | Turrentine Oil And Gas | Levelland, TX 79336 | Oil & Gas Operator | Feb 1996 |
| 795 | Tuskar (Texas), Inc. | Nichols Hill, OK 73116 | Oil & Gas Operator | Jan 2016 |
| 796 | Tuthill & Barbee | Amarillo, TX 79101 | Oil & Gas Operator | Nov 1994 |
| 797 | Twilco Operating LLC | Holliday, TX 76366 | Oil Operator | Feb 2026 |
| 798 | Twilight Energy LLC | Fort Worth, TX 76185 | Oil & Gas Operator | Feb 2026 |
| 799 | Twin Eagle Petroleum Corp | Tulsa, OK 74136 | Oil & Gas Operator | Jun 2002 |
| 800 | Twin Oaks Construction Company | Irving, TX 75063 | Oil & Gas Operator | Feb 2026 |