| 801 | Tallgrass Petroleum Corp | Hominy, OK 74035 | Oil & Gas Operator | Feb 2012 |
| 802 | Tap Petroleum Inc | Cleveland, OK 74020-0054 | Oil & Gas Operator | Apr 2020 |
| 803 | Taurus Minerals, Inc. | Midland, TX 79702 | Oil & Gas Operator | May 2024 |
| 804 | Taylor Clifford E Dba White Palace Energy | | Oil & Gas Operator | Jan 2024 |
| 805 | Taylor James A | Pawhuska, OK 74056 | Oil & Gas Operator | Aug 2013 |
| 806 | Teale F William | Tulsa, OK 74136-1017 | Oil & Gas Operator | Jun 2000 |
| 807 | Tec Resources, L.L.C. | Tulsa, OK 74128 | Oil & Gas Operator | May 2013 |
| 808 | Tekenergy, Inc. | Oklahoma City, OK 73112 | Oil & Gas Operator | Mar 2015 |
| 809 | Texaco Expl. And Prod. Inc. | Houston, TX 77236 | Oil & Gas Operator | Jan 2024 |
| 810 | Texaco Inc | Kingfisher, OK 73750 | Oil & Gas Operator | Dec 2017 |
| 811 | Texaco Oils, Inc. | Tulsa, OK 74102-2420 | Oil & Gas Operator | Jan 2003 |
| 812 | Texcal Oil Inc. | Vidor, TX 77662 | Oil & Gas Operator | Jun 1999 |
| 813 | TGT Petroleum Corporation | Wichita, KS 67275 | Oil & Gas Operator | Jan 2024 |
| 814 | TGX Corporation | Houston, TX 77002 | Oil & Gas Operator | Sep 2004 |
| 815 | The Elliott Oil Corporation | | Oil & Gas Operator | Jan 2024 |
| 816 | Thomas E L | Tulsa, OK 74136-6302 | Oil & Gas Operator | Feb 2015 |
| 817 | Thomas, Ellis W | | Oil & Gas Operator | Jan 2024 |
| 818 | Threet David Allen | Sand Springs, OK 74063-4035 | Oil & Gas Operator | Jan 2024 |
| 819 | Thunder Petroleum LLC | | Oil Operator | Sep 2022 |
| 820 | Tide West Oil Company | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2021 |
| 821 | Tiger Trucks Inc | Seminole, OK 74868 | Oil & Gas Operator | Feb 2024 |
| 822 | Tilley Matt Dba Tilley Oil Co | | Oil & Gas Operator | Jan 2024 |
| 823 | Tilley Oil & Gas, Inc. | Oklahoma City, OK 73172 | Oil & Gas Operator | May 2024 |
| 824 | Tilley Oil Inc | Velma, OK 73491-0811 | Oil & Gas Operator | Feb 2024 |
| 825 | Timber Hill Energy | Pawhuska, OK 74056-1055 | Oil & Gas Operator | Jun 2011 |
| 826 | Tindall Operating Company | Englewood, CO 80112 | Oil & Gas Operator | Feb 2024 |
| 827 | Tipperary Oil & Gas Corp | Denver, CO 80202 | Oil & Gas Operator | May 2014 |
| 828 | TKL Oil Properties Inc | Konawa, OK 74849 | Oil & Gas Operator | Dec 2023 |
| 829 | Toco Oil & Gas Co | Grapevine, TX 76051 | Oil & Gas Operator | Feb 1993 |
| 830 | Toklan Oil And Gas Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Feb 2024 |
| 831 | Tony Oil Company | Tulsa, OK 74136 | Oil & Gas Operator | Jan 2024 |
| 832 | Tonys Crude Oil Reclaiming Plant Inc | | Oil Operator | Jan 2024 |
| 833 | Toomey Oil Company Inc | Tulsa, OK 74101-1090 | Oil & Gas Operator | Feb 2024 |
| 834 | Topco Inc | Tulsa, OK 74105 | Oil & Gas Operator | Nov 2005 |
| 835 | Trace Operating Co & R Hudson | Pawhuska, OK 74056 | Oil & Gas Operator | Aug 2013 |
| 836 | Trailblazer Energy LLC | Plano, TX 75075 | Oil & Gas Operator | Feb 2024 |
| 837 | Trans Atlantic Resource Corp | Tulsa, OK 74136-5709 | Oil & Gas Operator | Nov 1998 |
| 838 | Trey Resources Inc. | Midland, TX 79710 | Oil & Gas Operator | Jan 2024 |
| 839 | Triple C Properties Inc | Seminole, OK 74818-0481 | Oil & Gas Operator | Jun 2023 |
| 840 | Tripower Resources, Inc. | Ardmore, OK 73402 | Oil & Gas Operator | Mar 2020 |
| 841 | Trout Disposal Well Inc | Hammon, OK 73650-0292 | Oil & Gas Operator | Jul 2016 |
| 842 | Tucker Tim | Hominy, OK 74035 | Oil Operator | Jan 2024 |
| 843 | Turner Jeff | Marlow, OK 73055-9864 | Oil & Gas Operator | Apr 2007 |
| 844 | Twisted Oak Operating LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Jan 2024 |
| 845 | Two Pines | Drumright, OK 74030-5502 | Oil & Gas Operator | Feb 2012 |
| 846 | Tyler Oil Company | Billings, MT 59104-3203 | Oil & Gas Operator | Nov 2019 |
| 847 | Umc Petroleum Corporation | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 848 | Union Oil Co Of California | Midland, TX 79706 | Oil & Gas Operator | Jan 2022 |
| 849 | Unit Petroleum Company | Tulsa, OK 74170 | Oil & Gas Operator | May 2024 |
| 850 | United Energy Develop Co LTD | Bartlesville, OK 74003 | Oil Operator | Mar 2004 |
| 851 | Universal Drilling Co., Inc. | Denver, CO 80203 | Oil & Gas Operator | Sep 2003 |
| 852 | Valiant Oil & Inv Co | | Oil & Gas Operator | Jan 2024 |
| 853 | Van Dall, Don | | Oil Operator | Mar 2015 |
| 854 | Van Horn I H | Tulsa, OK 74145-5715 | Oil & Gas Operator | Mar 2001 |
| 855 | Vancol Oil Co Inc | Ponca City, OK 74602-0030 | Oil & Gas Operator | May 2018 |
| 856 | Vantage Point Operating Co | Houston, TX 77057 | Oil & Gas Operator | Dec 2014 |
| 857 | VD Oil Company LLC | | Oil Operator | Jan 2024 |
| 858 | W & W Oil & Gas LLC | Wynona, OK 74084 | Oil Operator | Jan 2024 |
| 859 | W S Crude Oil Purchasing Inc | Oklahoma City, OK 73129-7613 | Oil & Gas Operator | May 2008 |
| 860 | Wagner Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | May 2024 |
| 861 | Wall Shelby | | Oil & Gas Operator | Oct 1998 |
| 862 | Walter E & Bernice N Darnall | | Oil Operator | Jan 2024 |
| 863 | Wandering Star Partners #1 LLLP | | Oil & Gas Operator | Apr 2015 |
| 864 | Warren American Oil Company LLC | Tulsa, OK 74147 | Oil & Gas Operator | May 2024 |
| 865 | Warrior Exploration & Production LLC | | Oil & Gas Operator | Jan 2024 |
| 866 | Warrior Exploration LLC | Midland, TX 79701 | Oil & Gas Operator | Dec 2023 |
| 867 | Wassom, Claude J | | Oil & Gas Operator | May 2013 |
| 868 | Wave Energy LLC | | Oil Operator | Feb 2024 |
| 869 | Wayona Oil & Gas | Ponca City, OK 74601 | Oil Operator | May 2011 |
| 870 | Wayside LTD | | Oil & Gas Operator | Jan 2015 |
| 871 | Weins Horton L | Tulsa, OK 74157-1117 | Oil & Gas Operator | Jan 2024 |
| 872 | Wellco Energy Inc | Oklahoma City, OK 73113-0130 | Oil & Gas Operator | Jan 2024 |
| 873 | Wells Allen W | Barnsdall, OK 74002-0997 | Oil & Gas Operator | Jan 2024 |
| 874 | Wells Jimme D | Ponca City, OK 74604 | Oil Operator | Jan 2024 |
| 875 | Westamerica Corporation | Dewey, OK 74029-0040 | Oil & Gas Operator | Aug 1999 |
| 876 | Western Oil And Gas Development Corp | Oklahoma City, OK 73103-3735 | Oil & Gas Operator | Feb 2024 |
| 877 | Western Operating Company | Denver, CO 80204 | Oil & Gas Operator | Jan 2024 |
| 878 | Whiteman Industries, Inc. | Oklahoma City, OK 73101 | Oil & Gas Operator | Jan 2024 |
| 879 | WHR Corp | Independence, KS 67301 | Oil & Gas Operator | Jul 2014 |
| 880 | Wikel David | Hominey, OK 74035 | Oil Operator | Jan 2024 |
| 881 | Wildfire Oil & Gas, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2014 |
| 882 | Williams Brothers Engineering Company | Tulsa, OK 74134-5885 | Oil & Gas Operator | May 2013 |
| 883 | Williams Doyle Dba BCF Gas | Tulsa, OK 74114-7099 | Oil & Gas Operator | Jul 2023 |
| 884 | Williams, Doyle | | Oil & Gas Operator | Jan 2024 |
| 885 | Williamson Ozella | Skiatook, OK 74070 | Oil Operator | Aug 2013 |
| 886 | Wilson W Robert | Pawhuska, OK 74056 | Oil & Gas Operator | Jan 2024 |
| 887 | Wilson Warren | Goodwell, OK 73939 | Oil Operator | Jan 2024 |
| 888 | Windward Development LLC | Tulsa, OK 74136-7007 | Oil & Gas Operator | Jul 2019 |
| 889 | Wise James W | Okmulgee, OK 74447 | Oil & Gas Operator | Oct 1996 |
| 890 | WLW Oil & Gas LLC | Kingfisher, OK 73750-1102 | Oil & Gas Operator | Feb 2024 |
| 891 | Woodward Iodine Corporation | Woodward, OK 73802-1245 | Oil & Gas Operator | Feb 2024 |
| 892 | Worstell Michael H | Collinsville, OK 74021-5918 | Oil Operator | Mar 2015 |
| 893 | Worstell Oil & Gas Company | Collinsville, OK 74021 | Oil Operator | Nov 2005 |
| 894 | Worstell Oil Co LLC | | Oil Operator | Aug 2023 |
| 895 | WP Oil LLC | | Oil Operator | Jan 2024 |
| 896 | Wyant & O'Keefe | Santa Fe, NM 87501 | Oil & Gas Operator | May 2006 |
| 897 | Wyatt Rick | Pawhuska, OK 74056 | Oil & Gas Operator | Feb 2006 |
| 898 | Wyatt'S Oil Corporation | Pawhuska, OK 74056 | Oil & Gas Operator | Jan 2024 |
| 899 | Xanadu Exploration Company | Broken Arrow, OK 74014 | Oil & Gas Operator | Feb 2024 |
| 900 | Xutapa Properties LLC | | Oil & Gas Operator | Jan 2024 |