| 701 | Tamarack Petroleum Company, Inc. | Midland, TX 79701 | Oil & Gas Operator | Sep 2026 |
| 702 | Tanos Production, Inc. | Houston, TX 77077 | Oil & Gas Operator | Aug 2003 |
| 703 | Targa Midstream Services LLC | Tulsa, OK 74103 | Oil Operator | Mar 2023 |
| 704 | Targa Pipeline Mid-Continent LLC | Houston, TX 77002 | Oil & Gas Operator | Jun 2018 |
| 705 | Taurus Operating, Inc. | Midland, TX 79710 | Oil & Gas Operator | Sep 2026 |
| 706 | Taylor Two Energy, LLC | Big Spring, TX 79720 | Oil & Gas Operator | Aug 2019 |
| 707 | Taylor-Link Operating Co. | Midland, TX 79702 | Oil & Gas Operator | Apr 2017 |
| 708 | TC Oil And Gas, LLC | Denton, TX 76205 | Oil Operator | Sep 2026 |
| 709 | TD Oil & Gas LLC | Duncan, OK 73533-1851 | Oil Operator | Apr 2023 |
| 710 | Tejas Operating Company, Inc. | Houston, TX 77257 | Oil & Gas Operator | May 1995 |
| 711 | Tejones Operating Corporation | San Antonio, TX 78217 | Oil & Gas Operator | Sep 2026 |
| 712 | Terrace Petroleum Corporation | Midland, TX 79701 | Oil & Gas Operator | Jul 2013 |
| 713 | Texaco E & P Inc. | Houston, TX 77099 | Oil & Gas Operator | Sep 2026 |
| 714 | Texas Crude Operator, Inc. | Houston, TX 77098 | Oil & Gas Operator | Aug 2017 |
| 715 | Texas Reexploration Operating LC | Fredericksbrg, TX 78624 | Oil & Gas Operator | Sep 2026 |
| 716 | Texas Secondary Oil Corporation | Devine, TX 78016 | Oil & Gas Operator | Sep 2026 |
| 717 | Texas Vanguard Oil Company | Austin, TX 78720 | Oil & Gas Operator | Jan 2014 |
| 718 | Texon Oil Company, Inc. | Midland, TX 79710 | Oil & Gas Operator | Apr 2023 |
| 719 | Thomas Exploration & Devel., Inc | Jourdanton, TX 78026 | Oil & Gas Operator | Sep 2026 |
| 720 | Thompson, J. Cleo | Dallas, TX 75201 | Oil & Gas Operator | May 2024 |
| 721 | Three Rivers Operating Co II LLC | Austin, TX 78735 | Oil & Gas Operator | Mar 2017 |
| 722 | Three Span Oil & Gas, Inc. | Midland, TX 79710 | Oil & Gas Operator | Sep 2026 |
| 723 | TMBR/Sharp Drilling, Inc. | Midland, TX 79703 | Oil & Gas Operator | Feb 2004 |
| 724 | Tom Operating And Minerals LLC | Andrews, TX 79714 | Gas Operator | Sep 2026 |
| 725 | Torch Energy Services, Inc. | Houston, TX 77010 | Oil & Gas Operator | Sep 2011 |
| 726 | Torch Operating Company | Houston, TX 77010 | Oil & Gas Operator | Mar 2015 |
| 727 | Tradition Resources LLC | Houston, TX 77002 | Oil & Gas Operator | Jan 2014 |
| 728 | Tradition Resources Oper, LLC | Houston, TX 77002 | Oil & Gas Operator | Jul 2017 |
| 729 | Trek Resources, Inc. | Dallas, TX 75207 | Oil & Gas Operator | Sep 2026 |
| 730 | Trend Exploration Company | Midland, TX 79701 | Oil & Gas Operator | Mar 2008 |
| 731 | Trey Exploration, Inc. | San Angelo, TX 76901 | Oil & Gas Operator | Dec 2019 |
| 732 | Trey Services, Inc. | Midland, TX 79711 | Oil & Gas Operator | Dec 1996 |
| 733 | Triag Energy Operating, Inc. | Midland, TX 79701 | Oil & Gas Operator | Jun 2014 |
| 734 | Trilogy Operating, Inc. | Midland, TX 79708 | Oil & Gas Operator | Sep 2026 |
| 735 | Triple "N" Services, Inc. | Midland, TX 79702 | Oil & Gas Operator | Sep 2026 |
| 736 | Triton Operating LLC | Wichita Falls, TX 76310 | Oil & Gas Operator | Sep 2026 |
| 737 | Triumph Exploration, Inc. | Midland, TX 79702 | Oil & Gas Operator | Sep 2026 |
| 738 | Tucker Drilling Company, Inc. | San Angelo, TX 76903 | Oil & Gas Operator | Jul 1996 |
| 739 | Tucker Operating Co., Inc. | Victoria, TX 77903 | Oil & Gas Operator | Sep 2026 |
| 740 | Turner, D. Ann Garrett, Est. Of | Big Spring, TX 79721 | Oil & Gas Operator | Jan 1999 |
| 741 | Uhc Petroleum Corporation | Rocksprings, TX 78880 | Oil & Gas Operator | Sep 2026 |
| 742 | Union Oil Co Of California | Midland, TX 79706 | Oil & Gas Operator | Jan 2022 |
| 743 | Union Pacific Resources Co. | Fort Worth, TX 76101 | Oil & Gas Operator | Jan 2001 |
| 744 | Unit Petroleum Company | Tulsa, OK 74170 | Oil & Gas Operator | Sep 2026 |
| 745 | United Energy Partners, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Mar 2008 |
| 746 | United Oil & Shale LLC | Woodward, OK 73801 | Oil & Gas Operator | Sep 2026 |
| 747 | United Operating, LLC *** | Midland, TX 79710 | Oil & Gas Operator | Sep 2026 |
| 748 | Unitex Oil & Gas, L.L.C. | Midland, TX 79701 | Oil & Gas Operator | Sep 2026 |
| 749 | Universal Resources Corp. | Salt Lake Cty, UT 84145 | Oil & Gas Operator | Jan 2000 |
| 750 | V-F Petroleum Inc. | Midland, TX 79702 | Oil & Gas Operator | Sep 2026 |
| 751 | Vaca Operating Company LLC | Pacific PLSDS, CA 90272 | Oil & Gas Operator | Aug 2017 |
| 752 | Valence Operating Company | Kingwood, TX 77339 | Oil & Gas Operator | Sep 2026 |
| 753 | Vanguard Operating, LLC | Houston, TX 77057 | Oil & Gas Operator | Jan 2021 |
| 754 | Vanguard Permian, LLC | Houston, TX 77057 | Oil & Gas Operator | Nov 2018 |
| 755 | Vanguard Production Company | Lubbock, TX 79410 | Oil & Gas Operator | Sep 2026 |
| 756 | Veritas Energy LLC | San Antonio, TX 78231 | Oil & Gas Operator | Sep 2026 |
| 757 | Vess Oil Corporation | Dallas, TX 75201 | Oil & Gas Operator | Sep 2026 |
| 758 | Vision Natural Resources, LP | Midland, TX 79708 | Oil & Gas Operator | Sep 2026 |
| 759 | Vision Oil And Gas LLC | Laredo, TX 78041 | Oil & Gas Operator | Sep 2026 |
| 760 | Vista Petroleum Corp | Houston, TX 77277 | Oil & Gas Operator | Dec 1996 |
| 761 | Vista Resources, Inc. (A) | Midland, TX 79701 | Oil & Gas Operator | Feb 2000 |
| 762 | Vital Energy, Inc. | Houston, TX 77002 | Oil & Gas Operator | Sep 2026 |
| 763 | Vogel, A. J., Inc. | Midland, TX 79702 | Oil & Gas Operator | Aug 1994 |
| 764 | W & W Properties | Westbrook, TX 79565 | Oil & Gas Operator | Aug 2018 |
| 765 | W.H.D., Inc. | Euless, TX 76039 | Oil & Gas Operator | Aug 1998 |
| 766 | Wagner Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Sep 2026 |
| 767 | Wallace Oil & Gas Inc | Oklahoma City, OK 73156 | Oil & Gas Operator | Sep 2026 |
| 768 | Wallen Production Co. | Midland, TX 79702 | Oil & Gas Operator | Aug 1996 |
| 769 | Walsh & Watts Inc | Aledo, TX 76008 | Oil & Gas Operator | Sep 2026 |
| 770 | Walton, James A. | Midland, TX 79702 | Oil & Gas Operator | Oct 1994 |
| 771 | Warrior Exploration LLC | Sapulpa, OK 74067-1912 | Oil & Gas Operator | Mar 2026 |
| 772 | Wash, Robert C. | Forsan, TX 79733 | Oil & Gas Operator | Nov 2000 |
| 773 | Wash, Robert C. Inc. | Forsan, TX 79733 | Oil & Gas Operator | Sep 2026 |
| 774 | Watusi Energy LLC | Midland, TX 79710 | Oil & Gas Operator | Sep 2026 |
| 775 | Wes-Tex Drilling Company | Abilene, TX 79604 | Oil & Gas Operator | Jan 2000 |
| 776 | Westco Oil Company | Ozona, TX 76943 | Oil & Gas Operator | Sep 2026 |
| 777 | Western Chief Operating, L.L.C. | Graham, TX 76450 | Oil & Gas Operator | Sep 2026 |
| 778 | Westland Oil Development Corp. | Conroe, TX 77305 | Oil & Gas Operator | Mar 2008 |
| 779 | Westport Oil & Gas Company LP | The Woodlands, TX 77380 | Oil & Gas Operator | Feb 2007 |
| 780 | Westport Oil And Gas Company Inc | Denver, CO 80202 | Oil & Gas Operator | Feb 2002 |
| 781 | WF Company, LTD. | Midland, TX 79705 | Oil & Gas Operator | Oct 1995 |
| 782 | White River Operating LLC | Gilmer, TX 75644 | Oil & Gas Operator | May 2026 |
| 783 | Whiting Oil And Gas Corporation | Houston, TX 77002 | Oil & Gas Operator | Sep 2026 |
| 784 | Whiting Petroleum Corporation | Denver, CO 80290 | Oil & Gas Operator | Jan 2025 |
| 785 | Wigington, James Robert | Ackerly, TX 79713 | Oil & Gas Operator | Aug 2003 |
| 786 | Wilco Properties, Inc. | Dallas, TX 75205 | Oil & Gas Operator | Jan 2004 |
| 787 | Wildcat Energy, LLC | Odessa, TX 79768 | Oil & Gas Operator | Jul 2021 |
| 788 | Wilmoth Interests, Inc. | Marion Center, PA 15759 | Oil & Gas Operator | May 2026 |
| 789 | Wilson, W.W. Jr. Properties | Abilene, TX 79605 | Oil & Gas Operator | Jul 1995 |
| 790 | Windsor Permian LLC | Midland, TX 79701 | Oil & Gas Operator | Jun 2012 |
| 791 | Winn Operating, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Sep 2026 |
| 792 | Wiseman, B. W., Jr. | Midland, TX 79702 | Oil & Gas Operator | Dec 2002 |
| 793 | Wiser Oil Co | Denver, CO 80202 | Oil & Gas Operator | Dec 2023 |
| 794 | WJC, Inc. | Post, TX 79356 | Oil & Gas Operator | Sep 2026 |
| 795 | Wnu Energy LLC | Pinedale, WY 82941 | Oil & Gas Operator | Jul 2026 |
| 796 | Wood, McShane & Thams | Midland, TX 79702 | Oil & Gas Operator | Oct 1995 |
| 797 | WTG Exploration | Midland, TX 79705 | Oil & Gas Operator | Sep 2026 |
| 798 | Xeric Oil & Gas Company | Midland, TX 79702 | Oil & Gas Operator | Jul 1997 |
| 799 | Xeric Oil & Gas Corporation | Midland, TX 79702 | Oil & Gas Operator | Apr 2014 |
| 800 | Xog Operating LLC | Midland, TX 79702 | Oil & Gas Operator | Sep 2026 |