| 801 | Triumph Energy Partners LLC | Oklahoma City, OK 73102-5804 | Oil & Gas Operator | Sep 2024 |
| 802 | Triumph Energy, Inc. | Lafayette, LA 70505 | Oil & Gas Operator | Nov 2015 |
| 803 | Troy Energy Operating LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | Sep 2024 |
| 804 | TRP Operating LLC | Houston, TX 77024 | Oil & Gas Operator | Dec 2024 |
| 805 | Tulsa Energy Partners LLC | Tulsa, OK 74103-4461 | Oil & Gas Operator | Sep 2024 |
| 806 | Turner Resources Inc | Hennessey, OK 73742 | Oil & Gas Operator | Sep 2024 |
| 807 | Twenty/Twenty Oil & Gas Inc | Hennessey, OK 73742 | Oil & Gas Operator | Sep 2024 |
| 808 | Twisted Oak Operating LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Oct 2024 |
| 809 | Txo Production Corp. | Ganado, TX 77962 | Oil & Gas Operator | Aug 2022 |
| 810 | Txok Energy Resources Company | Tulsa, OK 74172-0140 | Oil & Gas Operator | Feb 2017 |
| 811 | Umc Petroleum Corporation | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 812 | Unbridled Resources, LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2024 |
| 813 | Unicon Producing Company | Houston, TX 75252 | Gas Operator | Mar 1994 |
| 814 | Union Oil Co Of California | Midland, TX 79706 | Oil & Gas Operator | Jan 2022 |
| 815 | Union Texas Petroleum Corp. | Houston, TX 77252-2120 | Oil & Gas Operator | Dec 2014 |
| 816 | Unit Drilling & Exploration Co | Tulsa, OK 74132-5300 | Oil & Gas Operator | Sep 2024 |
| 817 | Unit Petroleum Company | Tulsa, OK 74170 | Oil & Gas Operator | Dec 2024 |
| 818 | United Energy Operating, LLC | Edmond, OK 73083 | Oil & Gas Operator | Dec 2024 |
| 819 | United Energy Trading LLC | Tulsa, OK 74133 | Gas Operator | Feb 2015 |
| 820 | United Oil Corporation | Denver, CO 80202-3813 | Oil & Gas Operator | Sep 2024 |
| 821 | United Production Company LLC | Edmond, OK 73003 | Oil & Gas Operator | Oct 2024 |
| 822 | Urban Oil & Gas Group, LLC | Plano, TX 75074 | Oil & Gas Operator | Dec 2024 |
| 823 | Valence Operating Company | Kingwood, TX 77339 | Oil & Gas Operator | Dec 2024 |
| 824 | Validus Energy II Midcon LLC | Denever, CO 80202 | Oil & Gas Operator | Sep 2024 |
| 825 | Vantage Point Operating Co | Houston, TX 77057 | Oil & Gas Operator | Dec 2014 |
| 826 | Vaquero Resources, LLC | Edmond, OK 73034 | Oil & Gas Operator | Oct 2024 |
| 827 | Vastar Resources Inc | Houston, TX 77253 | Oil & Gas Operator | Aug 2024 |
| 828 | Veenker Resources, Inc. | Oklahoma City, OK 73113 | Oil & Gas Operator | Oct 2024 |
| 829 | Ventana Exploration And Production II LLC | Oklahoma City, OK 73134-2519 | Oil & Gas Operator | Sep 2024 |
| 830 | Vi-Roi Oil Company | Duncan, OK 73533 | Oil & Gas Operator | Jun 2004 |
| 831 | Vi-Roi Oil Company LLC | Duncan, OK 73534-1624 | Oil Operator | Aug 1997 |
| 832 | Vintage Gas Inc | Tulsa, OK 74119-1029 | Oil & Gas Operator | Jun 2007 |
| 833 | Vintage Marketing Inc | Tulsa, OK 74172 | Oil & Gas Operator | Apr 2003 |
| 834 | Vintage Petroleum, Inc. | Houston, TX 77046 | Oil & Gas Operator | Sep 2024 |
| 835 | Vitol Inc | Houston, TX 77002 | Oil & Gas Operator | Sep 2023 |
| 836 | Vitruvian Exploration LLC | The Woodlands, TX 77380 | Oil & Gas Operator | May 2016 |
| 837 | Vitruvian II Woodford LLC | The Woodlands, TX 77381-5259 | Oil & Gas Operator | May 2019 |
| 838 | Wagner & Brown | Midland, TX 79702 | Oil & Gas Operator | Aug 2014 |
| 839 | Wagner & Brown LP | Midland, TX 79702-1714 | Oil & Gas Operator | Aug 2022 |
| 840 | Wagner Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2024 |
| 841 | Wainoco Oil & Gas Company | Houston, TX 77024 | Oil & Gas Operator | Dec 2005 |
| 842 | Walden E F | Ada, OK 74820 | Oil & Gas Operator | Aug 2014 |
| 843 | Walsh & Watts Inc | Aledo, TX 76008 | Oil & Gas Operator | Dec 2024 |
| 844 | Walsh Jr F Howard | Fort Worth, TX 76102-4773 | Oil & Gas Operator | Sep 2024 |
| 845 | Walsh Jr F Howard Opr Co Inc | Fort Worth, TX 76102-4773 | Oil & Gas Operator | Feb 2016 |
| 846 | Wapi Operating LLC | McCurtain, OK 74944 | Oil Operator | Sep 2024 |
| 847 | Ward Gas Marketing Inc | Enid, OK 73702 | Oil & Gas Operator | Sep 2011 |
| 848 | Ward Oil Company An Okla Corp | McAlester, OK 74501 | Oil & Gas Operator | Feb 1993 |
| 849 | Ward Petroleum Corporation | Enid, OK 73702 | Oil & Gas Operator | Sep 2024 |
| 850 | Warren American Oil Company LLC | Tulsa, OK 74147 | Oil & Gas Operator | Dec 2024 |
| 851 | Warwick-Bacchus LLC | Oklahoma City, OK 73116 | Oil & Gas Operator | Sep 2024 |
| 852 | Warwick-Jupiter LLC | Oklahoma City, OK 73116 | Oil & Gas Operator | Sep 2024 |
| 853 | Weatherly Oil & Gas, LLC | Dallas, TX 75206 | Oil & Gas Operator | Dec 2024 |
| 854 | Webbco | Bray, OK 73012 | Oil Operator | Aug 1998 |
| 855 | Wellco Energy Inc | Harrah, OK 73045 | Oil & Gas Operator | Sep 2024 |
| 856 | Wes-Tex Drilling Company | Abilene, TX 79604 | Oil & Gas Operator | Jan 2000 |
| 857 | Western Oil And Gas Development Corp | Oklahoma City, OK 73103-3735 | Oil & Gas Operator | Oct 2024 |
| 858 | Weststar Oil & Gas Inc | Edmond, OK 73013 | Oil & Gas Operator | Oct 2024 |
| 859 | Wheatland Oil Inc | Enid, OK 73702-1032 | Oil & Gas Operator | Mar 2015 |
| 860 | White Brothers Investment Inc | Dallas, TX 75201 | Oil & Gas Operator | Apr 2014 |
| 861 | White Oak Production Company | Conway, AR 72034 | Oil & Gas Operator | Sep 2005 |
| 862 | White Wolf Energy LLC | Richardson, TX 75080-5509 | Oil & Gas Operator | Oct 2022 |
| 863 | Whiting Oil And Gas Corporation | Houston, TX 77002 | Oil & Gas Operator | Dec 2024 |
| 864 | Whitley Oil & Gas Inc | Owasso, OK 74055 | Oil & Gas Operator | Jun 2009 |
| 865 | Wildwood Operating LLC | Hennessey, OK 73742-7711 | Oil & Gas Operator | Sep 2024 |
| 866 | Will Energy Corporation | Dallas, TX 75201 | Oil & Gas Operator | Sep 2024 |
| 867 | Williams Kidd Drilling Corp | Claremore, OK 74017-0846 | Oil Operator | Jun 2013 |
| 868 | Wilshire Enterprises Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2015 |
| 869 | Windsor Energy Group LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | Aug 2021 |
| 870 | WLW Oil & Gas LLC | Kingfisher, OK 73750 | Oil & Gas Operator | Oct 2024 |
| 871 | WM KS Energy Resources LLC | Shreveport, LA 71101 | Oil & Gas Operator | Nov 2019 |
| 872 | Wolverine Petroleum Corp | Holdenville, OK 74848 | Oil & Gas Operator | Jul 1999 |
| 873 | Woods Petroleum Corporation | Oklahoma City, OK 73112 | Oil & Gas Operator | Mar 2015 |
| 874 | Wright Richard | Ratliff City, OK 73481-0155 | Oil & Gas Operator | Mar 2015 |
| 875 | Wynn-Crosby Operating LP | Dallas, TX 75201 | Oil & Gas Operator | Sep 2024 |
| 876 | XTO Energy Inc. | Spring, TX 77389 | Oil & Gas Operator | Dec 2024 |
| 877 | Yale Oil Association, Inc. | Oklahoma City, OK 73105 | Oil & Gas Operator | Oct 2024 |
| 878 | Yarhola Production Company | Drumright, OK 74030 | Oil & Gas Operator | Oct 2024 |
| 879 | Young Z Joe | Cement, OK 73017-0600 | Oil & Gas Operator | Mar 2015 |
| 880 | Z G Exploration Inc | Oklahoma City, OK 73112 | Oil & Gas Operator | Feb 2005 |
| 881 | Zarvona Energy LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2024 |
| 882 | Zeiders Bros Oil & Gas Co LLC | Edmond, OK 73003 | Oil & Gas Operator | Sep 2024 |
| 883 | Zephyr Operating Co LLC | Oklahoma City, OK 73118-6035 | Oil & Gas Operator | Sep 2024 |
| 884 | Zephyr SWD LLC | Oklahoma City, OK 73118-6035 | Oil Operator | Sep 2024 |