| 701 | Triumph Oil Company | Dallas, TX 75201 | Oil & Gas Operator | Jun 1994 |
| 702 | Trivestco Energy Company | Ponca City, OK 74601 | Oil & Gas Operator | Sep 2024 |
| 703 | Trivista Operating LLC | Giddings, TX 78942 | Oil & Gas Operator | Dec 2024 |
| 704 | Trivium Operating, LLC | Fort Worth, TX 76107 | Oil & Gas Operator | Dec 2024 |
| 705 | Trojan Oil And Gas | White Deer, TX 79097 | Oil & Gas Operator | Dec 1994 |
| 706 | Trojan Oil Company, LLC | Big Lake, TX 76932 | Oil Operator | Dec 2024 |
| 707 | Troubadour Operating, LLC | Houston, TX 77019 | Oil & Gas Operator | Dec 2024 |
| 708 | Troup Oil & Gas, LLC | Oklahoma City, OK 73112 | Oil Operator | Dec 2024 |
| 709 | Trousil & Associates, Inc. | Steamboat SPG, CO 80477 | Oil & Gas Operator | Dec 2006 |
| 710 | Trout Oil Company, Inc. | Odessa, TX 79762 | Oil & Gas Operator | Dec 2024 |
| 711 | TRP Operating LLC | Houston, TX 77024 | Oil & Gas Operator | Dec 2024 |
| 712 | True Oil Company | Casper, WY 82602 | Oil & Gas Operator | Aug 2003 |
| 713 | True Oil Company LLC | Midland, TX 79701 | Oil & Gas Operator | Mar 2016 |
| 714 | True Wolf Operating, LLC | Iowa Park, TX 76367 | Oil Operator | Dec 2024 |
| 715 | Trueblood Resources, Inc. | Denver, CO 80222 | Oil & Gas Operator | Dec 2024 |
| 716 | Trump Energy | Austin, TX 78734 | Oil & Gas Operator | Mar 2008 |
| 717 | Trumter Petroleum Corporation | Fort Worth, TX 76185 | Oil & Gas Operator | Aug 1998 |
| 718 | Trust Oil Co. | Pine, CO 80470 | Oil & Gas Operator | Dec 2024 |
| 719 | Trustar Operating Company Inc. | Austin, TX 78750 | Oil Operator | Dec 2024 |
| 720 | Trutex Operating, LLC | Haltom City, TX 76117 | Oil & Gas Operator | Dec 2024 |
| 721 | Truth Resources LP | Houston, TX 77090 | Oil Operator | Sep 2021 |
| 722 | Tryall, Inc | Porter, TX 77365 | Oil & Gas Operator | Dec 2024 |
| 723 | Tryco Exploration, LLC | Plano, TX 75026 | Oil & Gas Operator | Nov 2006 |
| 724 | Tryma Operating | Borger, TX 79008 | Oil & Gas Operator | Dec 2024 |
| 725 | TS & T Drilling, Inc. | Wichita Falls, TX 76301 | Oil & Gas Operator | Mar 2016 |
| 726 | Tsar Energy, LLC | Dallas, TX 75205 | Oil & Gas Operator | Dec 2024 |
| 727 | Tsar Operating Company | Fort Worth, TX 76116 | Oil & Gas Operator | Jul 2021 |
| 728 | Tschoepe, Arthur J. | Leakey, TX 78873 | Oil & Gas Operator | Jun 2001 |
| 729 | TSF Operating | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 730 | Tsoco | Tuleta, TX 78162 | Oil & Gas Operator | Apr 2017 |
| 731 | Tsoco & W. M. Null | Pettus, TX 78146 | Oil & Gas Operator | Aug 2002 |
| 732 | TSW Oil & Gas, LLC | Abilene, TX 79602 | Oil & Gas Operator | Jan 2016 |
| 733 | TT Operating, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Dec 2024 |
| 734 | TTK Energy LLC | Kilgore, TX 75663 | Oil Operator | Dec 2024 |
| 735 | TTL Energy Resources, Inc. | Borger, TX 79008 | Oil & Gas Operator | Aug 2013 |
| 736 | Tuckco Petroleum Corporation | Andrews, TX 79714 | Oil & Gas Operator | Dec 2024 |
| 737 | Tucker Drilling Company, Inc. | San Angelo, TX 76903 | Oil & Gas Operator | Jul 1996 |
| 738 | Tucker Operating Co., Inc. | Victoria, TX 77903 | Oil & Gas Operator | Dec 2024 |
| 739 | Tucker Petroleum, Inc. | Corpus Chrsti, TX 78468 | Oil & Gas Operator | Dec 2024 |
| 740 | Tucker Resources, Inc. | Wichita Falls, TX 76301 | Oil & Gas Operator | Aug 2003 |
| 741 | Tug Hill Operating, LLC | Fort Worth, TX 76107 | Oil & Gas Operator | Dec 2021 |
| 742 | Tug Oil & Gas, L.L.C. | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 2024 |
| 743 | Tularosa Operating Company | Kerrville, TX 78029 | Oil & Gas Operator | Mar 2024 |
| 744 | Tuleta Energy Partners, LLC | Norman, OK 73072 | Oil & Gas Operator | Dec 2024 |
| 745 | Tulsa Minerals Inc | Tulsa, OK 74136-1045 | Oil & Gas Operator | May 2013 |
| 746 | Tumble Weed Production Co. | Borger, TX 79008 | Oil & Gas Operator | Dec 1994 |
| 747 | Tumbleweed Energy Limited | Midland, TX 79704 | Oil & Gas Operator | Dec 2022 |
| 748 | Tundra Operating LLC | Spring, TX 77386 | Oil Operator | May 2017 |
| 749 | Turnbow Drilling Co. | Holliday, TX 76366 | Oil & Gas Operator | Dec 2024 |
| 750 | Turner Production | Big Lake, TX 76932 | Oil & Gas Operator | Dec 2024 |
| 751 | Turner, D. Ann Garrett, Est. Of | Big Spring, TX 79721 | Oil & Gas Operator | Jan 1999 |
| 752 | Turner, Greg | Cross Plains, TX 76443 | Oil & Gas Operator | Dec 2024 |
| 753 | Turner, M. O. | San Antonio, TX 78278 | Oil & Gas Operator | Apr 2003 |
| 754 | Turner, Randy | Olney, TX 76374 | Oil & Gas Operator | Jan 2005 |
| 755 | Turquoise Bay Corporation | Odessa, TX 79760 | Oil & Gas Operator | Dec 2018 |
| 756 | Turrentine Oil & Gas, Inc. | Horseshoe Bay, TX 78657 | Oil & Gas Operator | Oct 2019 |
| 757 | Turrentine Oil And Gas | Levelland, TX 79336 | Oil & Gas Operator | Feb 1996 |
| 758 | Tuskar (Texas), Inc. | Nichols Hill, OK 73116 | Oil & Gas Operator | Jan 2016 |
| 759 | Tuthill & Barbee | Amarillo, TX 79101 | Oil & Gas Operator | Nov 1994 |
| 760 | Twilco Operating LLC | Holliday, TX 76366 | Oil Operator | Dec 2024 |
| 761 | Twilight Energy LLC | Fort Worth, TX 76185 | Oil & Gas Operator | Dec 2024 |
| 762 | Twin Oaks Construction Company | Irving, TX 75063 | Oil & Gas Operator | Dec 2024 |
| 763 | Twins Oil Co. | Monahans, TX 79756 | Oil & Gas Operator | Dec 2024 |
| 764 | Two Bit Operating Company LLC | Fort Worth, TX 76110 | Oil & Gas Operator | Dec 2024 |
| 765 | Two Black Bears Oil, Inc. | Midland, TX 79710 | Oil & Gas Operator | Sep 2003 |
| 766 | Two Oaks Operating Company, LLC. | Flower Mound, TX 75028 | Oil & Gas Operator | Mar 2008 |
| 767 | Two P Partners, LLC | Golden, CO 80401 | Oil & Gas Operator | Dec 2024 |
| 768 | Twojo, Inc. | Longview, TX 75601 | Oil & Gas Operator | Nov 1996 |
| 769 | TX Heat Of The Permian Basin Inc | Odessa, TX 79768 | Oil & Gas Operator | Dec 2021 |
| 770 | TX Lone Star Operating Co, LLC | Sulphur SPGS, TX 75483 | Oil & Gas Operator | Dec 2024 |
| 771 | TX Petroleum Company | Corpus Chrsti, TX 78412 | Oil & Gas Operator | Apr 1996 |
| 772 | Txco Resources Inc. | San Antonio, TX 78280 | Oil & Gas Operator | Dec 2024 |
| 773 | Txla Energy, Inc. | Houston, TX 77018 | Oil & Gas Operator | Dec 2024 |
| 774 | Txo Production Corp. | Ganado, TX 77962 | Oil & Gas Operator | Aug 2022 |
| 775 | Txok Texas Energy Resources,L.P. | Dallas, TX 75251 | Oil & Gas Operator | Apr 2008 |
| 776 | Txon Partners, LLC | Houston, TX 77057 | Oil & Gas Operator | Jun 2017 |
| 777 | TXP, Incorporated | San Angelo, TX 76906 | Oil & Gas Operator | Dec 2024 |
| 778 | Txu Fuel Company | Dallas, TX 75201 | Oil & Gas Operator | May 2004 |
| 779 | Txu Gas Company | Dallas, TX 75201 | Oil & Gas Operator | Sep 2004 |
| 780 | Txu Lone Star Pipeline | Dallas, TX 75201 | Oil & Gas Operator | Oct 2003 |
| 781 | TXX Operating LLC | Shreveport, LA 71133 | Oil & Gas Operator | Dec 2024 |
| 782 | Ty-Tex Exploration, Inc. | Tyler, TX 75711 | Oil Operator | Dec 2000 |
| 783 | Tyco Operating Co. | Archer City, TX 76351 | Oil & Gas Operator | Dec 2024 |
| 784 | Tyl Oil | Canon City, CO 81212 | Gas Operator | May 1994 |
| 785 | Tyler Oil & Gas Inc. | Tyler, TX 75702 | Oil & Gas Operator | Sep 2004 |
| 786 | Tyner Texas Operating Company | Dallas, TX 75248 | Oil & Gas Operator | Dec 2024 |