| 801 | St. Clair Energy Corporation | Tulsa, OK 74153 | Oil & Gas Operator | Mar 2008 |
| 802 | Stanolind Operating Corp. | Midland, TX 79701 | Oil & Gas Operator | Apr 2008 |
| 803 | Stanolind Operating LLC Dba Stanolind NM LLC | Midland, TX 79701 | Oil & Gas Operator | Dec 2014 |
| 804 | Stanolind Permian LLC | Midland, TX 79705 | Oil & Gas Operator | Dec 2025 |
| 805 | Stearns | Crossroads, NM 88114 | Oil & Gas Operator | Aug 2025 |
| 806 | Stephens & Johnson Op Co | Wichita Falls, TX 76307 | Oil & Gas Operator | Nov 2025 |
| 807 | Steven D Ruppert | Tesuque, NM 87574 | Oil & Gas Operator | Feb 2022 |
| 808 | Stevenson Oil Co | Houston, TX 77002 | Oil & Gas Operator | Mar 2025 |
| 809 | Steward Energy II, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2025 |
| 810 | Strata Production Co | Roswell, NM 882021030 | Oil & Gas Operator | Nov 2025 |
| 811 | Summers Exploration Company | Midland, TX 79701 | Oil & Gas Operator | Dec 2002 |
| 812 | Sundown Energy LP | Dallas, TX 75248 | Oil & Gas Operator | Dec 2025 |
| 813 | Sunlight Exploration, Inc. | Canyon, TX 79015 | Oil & Gas Operator | Dec 2025 |
| 814 | Sunset Well Service Holdings Inc | Midland, TX 79708 | Oil Operator | Apr 2013 |
| 815 | Swift Energy Company | Houston, TX 77060 | Oil & Gas Operator | Mar 2021 |
| 816 | Synergy Oil & Gas, Inc. | Houston, TX 77024 | Oil & Gas Operator | Nov 2019 |
| 817 | T M Hopkins Operating Co | Kilgore, TX 75663 | Oil & Gas Operator | Oct 2002 |
| 818 | T2 Operating Corporation | Denver, CO 80202 | Oil & Gas Operator | Dec 2025 |
| 819 | Tahoe Energy, Inc. | Midland, TX 79703 | Oil & Gas Operator | Jul 1996 |
| 820 | Tamarack Petroleum Company, Inc. | Midland, TX 79701 | Oil & Gas Operator | Dec 2025 |
| 821 | Tamaroa Operating, LLC | Plano, TX 750866937 | Oil & Gas Operator | Nov 2025 |
| 822 | Tandem Energy Corporation | Houston, TX 77056 | Oil & Gas Operator | Dec 2025 |
| 823 | Tap Rock Operating, LLC | Denver, CO 80203 | Oil & Gas Operator | Dec 2025 |
| 824 | Team Operating, L.L.C. | Pinehurst, TX 77362 | Oil & Gas Operator | Dec 2025 |
| 825 | Techsys Resources LLC | Houston, TX 77224 | Gas Operator | Aug 2015 |
| 826 | Tema Oil And Gas Company | Houston, TX 77084 | Oil & Gas Operator | Dec 2025 |
| 827 | Tempo Energy, Inc. | Midland, TX 79702 | Oil & Gas Operator | Dec 2025 |
| 828 | Tenison Oil Company | Abilene, TX 79605 | Oil & Gas Operator | Oct 2025 |
| 829 | Terry Pate | Hobbs, NM 88240 | Oil & Gas Operator | Jun 2006 |
| 830 | Texaco Exploration & Prod Inc | Houston, TX 77236 | Oil & Gas Operator | Sep 2025 |
| 831 | Texas Reexploration Operating LC | Fredericksbrg, TX 78624 | Oil & Gas Operator | Dec 2025 |
| 832 | Texas Vanguard Oil Company | Austin, TX 78720 | Oil & Gas Operator | Jan 2014 |
| 833 | Texian Operating Company, LLC | Irving, TX 75063 | Oil & Gas Operator | Dec 2025 |
| 834 | Texland Petroleum, L.P. | Fort Worth, TX 76107 | Oil & Gas Operator | Dec 2025 |
| 835 | Texland Petroleum-Hobbs, L.L.C. | Fort Worth, TX 76102 | Oil & Gas Operator | Nov 2025 |
| 836 | Texon Oil Company, Inc. | Midland, TX 79710 | Oil & Gas Operator | Apr 2023 |
| 837 | The Colborn Company, Inc. | Eunice, NM 88231 | Oil & Gas Operator | Jun 2025 |
| 838 | Thomas R Sivley | Southlake, TX 76092 | Oil & Gas Operator | Mar 2013 |
| 839 | Three Forks Resources, LLC | Wheat Ridge, CO 80033 | Oil & Gas Operator | Dec 2025 |
| 840 | Three Rivers Operating Co LLC | Austin, TX 78735 | Oil & Gas Operator | Mar 2017 |
| 841 | Three Span Oil & Gas, Inc. | Midland, TX 79710 | Oil & Gas Operator | Dec 2025 |
| 842 | Threshold Development Company | Fort Worth, TX 76109 | Oil & Gas Operator | Aug 2016 |
| 843 | Thunderbolt Petroleum, LLC | Midland, TX 79702 | Oil & Gas Operator | Sep 2013 |
| 844 | Timberline Oil & Gas, LLC | Seminole, TX 79360 | Oil Operator | Mar 2025 |
| 845 | Tipperary Oil & Gas Corporation | Denver, CO 80202 | Oil & Gas Operator | May 2014 |
| 846 | Tipperary Petro Co | Midland, TX 79701 | Oil & Gas Operator | Dec 1993 |
| 847 | Tipton & Denton | Dallas, TX 752196406 | Oil & Gas Operator | Sep 2019 |
| 848 | Tipton Denton & Denton | Hobbs, NM 88240 | Oil & Gas Operator | Sep 2019 |
| 849 | Tipton Oil & Gas Acquisitions, Inc. | Irving, TX 75038 | Oil & Gas Operator | Sep 2010 |
| 850 | Titan Resources I, Inc. | Midland, TX 79701 | Oil & Gas Operator | Jun 2000 |
| 851 | Titus Oil & Gas Production, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Sep 2022 |
| 852 | TK Operating | Cross Plains, TX 76443 | Oil & Gas Operator | Dec 2025 |
| 853 | TMBR/Sharp Drilling, Inc. | Midland, TX 79703 | Oil & Gas Operator | Feb 2004 |
| 854 | Tola Production Company | Dallas, TX 75367 | Oil & Gas Operator | Dec 2025 |
| 855 | Tom Brown Inc | Denver, CO 80202 | Oil & Gas Operator | Dec 2004 |
| 856 | Tom R Cone | Hobbs, NM 88240 | Oil Operator | Oct 2009 |
| 857 | Tora Oil & Gas | Hobbs, NM 88240 | Oil & Gas Operator | Jan 2008 |
| 858 | Tora Oil & Gas, LLC | Jal, NM 88252 | Oil & Gas Operator | Dec 2020 |
| 859 | Torch Energy Services, Inc. | Houston, TX 77010 | Oil & Gas Operator | Sep 2011 |
| 860 | Transglobe Oil & Gas Corporation | Littleton, CO 801222710 | Oil & Gas Operator | Dec 1999 |
| 861 | Trilogy Operating, Inc. | Midland, TX 79708 | Oil & Gas Operator | Dec 2025 |
| 862 | Trinity Eor, LLC | Midland, TX 79701 | Oil & Gas Operator | Jan 2019 |
| 863 | Trio Oil Co | Hobbs, NM 88240 | Oil & Gas Operator | Feb 2004 |
| 864 | Tritex Resources, L.L.C. | Kilgore, TX 75663 | Oil & Gas Operator | Dec 2009 |
| 865 | Triumph Exploration, Inc. | Midland, TX 79702 | Oil & Gas Operator | Dec 2025 |
| 866 | Turrentine Oil & Gas, Inc. | Horseshoe Bay, TX 78657 | Oil & Gas Operator | Oct 2019 |
| 867 | U. S. Energy Development Corporation | Fort Worth, TX 76164 | Oil & Gas Operator | Dec 2025 |
| 868 | Union Oil Co Of California | Midland, TX 79706 | Oil & Gas Operator | Jan 2022 |
| 869 | Unit Petroleum Company | Tulsa, OK 74170 | Oil & Gas Operator | Dec 2025 |
| 870 | United Operating, LLC *** | Midland, TX 79710 | Oil & Gas Operator | Dec 2025 |
| 871 | Unitex Oil & Gas, L.L.C. | Midland, TX 79701 | Oil & Gas Operator | Dec 2025 |
| 872 | Upland Production Company | Edmond, OK 73083 | Oil & Gas Operator | Dec 2025 |
| 873 | V-F Petroleum Inc. | Midland, TX 79702 | Oil & Gas Operator | Dec 2025 |
| 874 | Vanguard Operating, LLC | Houston, TX 77057 | Oil & Gas Operator | Aug 2019 |
| 875 | Vernon E. Faulconer, Inc. | Tyler, TX 75711 | Oil & Gas Operator | Dec 2024 |
| 876 | Victory Oil & Gas Inc | Gun Barrel Cy, TX 75156 | Oil & Gas Operator | Dec 2025 |
| 877 | Vintage Petroleum, LLC | Houston, TX 77210 | Oil & Gas Operator | Dec 2019 |
| 878 | Vista Resources Of Texas, Inc. | Midland, TX 79701 | Oil & Gas Operator | Feb 2000 |
| 879 | VPR Operating LLC | Austin, TX 78746 | Oil & Gas Operator | Oct 2013 |
| 880 | W & W Oil, Inc. | Lovington, NM 88260 | Oil & Gas Operator | May 1999 |
| 881 | W A Moncrief Jr | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2025 |
| 882 | W B Yarborough | Hobbs, NM 88241 | Oil & Gas Operator | Nov 1995 |
| 883 | W H Brininstool | Jal, NM 88252 | Oil & Gas Operator | Aug 2006 |
| 884 | W R Ericksen | Hobbs, NM 882411109 | Oil & Gas Operator | Jul 1994 |
| 885 | Wadi Petroleum Inc | Houston, TX 77014 | Oil & Gas Operator | May 2018 |
| 886 | Wagner & Brown, LTD. | Midland, TX 79702 | Oil & Gas Operator | Aug 2014 |
| 887 | Wagner Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2025 |
| 888 | Wallen Production Co. | Midland, TX 79702 | Oil & Gas Operator | Aug 1996 |
| 889 | Walsh & Watts Inc | Aledo, TX 76008 | Oil & Gas Operator | Dec 2025 |
| 890 | Walton Properties LTD. | Midland, TX 79702 | Oil & Gas Operator | Feb 2004 |
| 891 | Warren American Oil Co | Tulsa, OK 74147 | Oil & Gas Operator | Nov 2025 |
| 892 | Warren E & P Inc | Dallas, TX 75240 | Oil & Gas Operator | Oct 2025 |
| 893 | Warrior Inc | Hobbs, NM 88241 | Oil & Gas Operator | Feb 1998 |
| 894 | Waylander LLC | Plano, TX 75025 | Oil & Gas Operator | Dec 2025 |
| 895 | Westbrook Oil Corp | Jal, NM 88252 | Oil & Gas Operator | May 2018 |
| 896 | Westerly Exploration, Inc. | Houston, TX 77256 | Oil & Gas Operator | Dec 2025 |
| 897 | Western Oil Producers Inc | Roswell, NM 88202 | Oil & Gas Operator | Jul 2005 |
| 898 | Western Reserves Oil Co Inc | Midland, TX 79705 | Oil & Gas Operator | Oct 2020 |
| 899 | Westland Oil Development Corp. | Conroe, TX 77305 | Oil & Gas Operator | Mar 2008 |
| 900 | Weststar Exploration Co | Houston, TX 77027 | Oil & Gas Operator | Dec 2025 |