| 801 | Sparrow Operating LLC | Comanche, OK 73529-9747 | Oil Operator | Feb 2024 |
| 802 | Spartan Resources LLC | Oklahoma City, OK 73116 | Oil & Gas Operator | Feb 2024 |
| 803 | Special Energy Corporation | Stillwater, OK 74076 | Oil & Gas Operator | May 2024 |
| 804 | Spectrum Field Services Inc | Tulsa, OK 74136-3400 | Oil & Gas Operator | Jan 2004 |
| 805 | Spess Oil Company Inc | Cleveland, OK 74020-4617 | Oil & Gas Operator | Feb 2024 |
| 806 | Spitfire Energy Group LLC | | Oil Operator | Apr 2023 |
| 807 | Splawn & Splawn | Saint Louis, OK 74866-0098 | Oil & Gas Operator | Aug 2023 |
| 808 | Spragins Ed S | Wichita Falls, TX 76308-0670 | Oil & Gas Operator | Feb 2024 |
| 809 | Spring Operating Company | Edmond, OK 73083-2048 | Oil & Gas Operator | Feb 2024 |
| 810 | Spruiell Drilling Co., Inc. | Holliday, TX 76366 | Oil & Gas Operator | May 2024 |
| 811 | Spur Operating Co. | Austin, TX 78701 | Oil & Gas Operator | May 2024 |
| 812 | SRW Operating LLC | Duncan, OK 73534-2087 | Oil & Gas Operator | Sep 2014 |
| 813 | SSB Production LC | Ardmore, OK 73402-0998 | Oil & Gas Operator | Feb 2024 |
| 814 | St. Mary Operating Company | Denver, CO 80203 | Oil & Gas Operator | Mar 2019 |
| 815 | Staghorn Energy, LLC | Tulsa, OK 74103 | Oil & Gas Operator | Jan 2024 |
| 816 | Stamic Oil LLC | Duncan, OK 73534-1898 | Oil & Gas Operator | Oct 2021 |
| 817 | Staub, Larry, Inc. | Azle, TX 76020 | Oil & Gas Operator | May 2024 |
| 818 | Steele VIctor Patterson | Wewoka, OK 74884-0560 | Oil & Gas Operator | Jan 2001 |
| 819 | Stephens & Johnson Operating Co. | Wichita Falls, TX 76307 | Oil & Gas Operator | May 2024 |
| 820 | Stephens Production Company | The Woodlands, TX 77381 | Oil & Gas Operator | Feb 2024 |
| 821 | Stesco Operating Company LLC | Oklahoma City, OK 73156-0100 | Oil & Gas Operator | Jan 2024 |
| 822 | Stone River Energy Corp | Edmond, OK 73034 | Oil & Gas Operator | Jan 2014 |
| 823 | Stoneriver Energy, LLC | Lubbock, TX 79424 | Oil & Gas Operator | May 2024 |
| 824 | Streamline Oil And Gas Inc | Alex, OK 73002-0117 | Oil & Gas Operator | Mar 2024 |
| 825 | Sudberry Mark E Dba Gushing Oil Co | Trophy Club, TX 76262-5531 | Oil Operator | Jan 2020 |
| 826 | Sullivan Wesley L | Duncan, OK 73533 | Oil & Gas Operator | Mar 2002 |
| 827 | Sun Refining & Marketing | Philadelphia, PA 19103 | Oil & Gas Operator | Jul 2015 |
| 828 | Sundown Energy LP | Dallas, TX 75248 | Oil & Gas Operator | May 2024 |
| 829 | Sundown Energy, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Jan 2024 |
| 830 | Sunnybook Transmission Inc | Houston, TX 77002 | Oil & Gas Operator | Oct 1992 |
| 831 | Sunoco Partners MKT & Terminal | Tulsa, OK 74102-2039 | Oil & Gas Operator | Jan 2019 |
| 832 | Sunset Energy L L C | Palm Harbor, FL 34683-3044 | Oil Operator | Dec 2007 |
| 833 | Sunstone Energy Company | Tulsa, OK 74153 | Oil & Gas Operator | Aug 2009 |
| 834 | Superior Saltwater Disposal LLC | | Oil & Gas Operator | Dec 2016 |
| 835 | Surge Ok Midstream LLC | | Oil Operator | Feb 2024 |
| 836 | Sutton Eddie L Oil Company | Loco, OK 73442-9701 | Oil Operator | Feb 2024 |
| 837 | Sutton Oil Company, LLC | Loco, OK 73442 | Oil Operator | Jan 2024 |
| 838 | Swanson G T | Duncan, OK 73533 | Oil & Gas Operator | Nov 1998 |
| 839 | Sweetwater Exploration LLC | Norman, OK 73069-5636 | Oil & Gas Operator | Jan 2024 |
| 840 | SWN Production LLC | Spring, TX 77389-4954 | Oil & Gas Operator | Feb 2022 |
| 841 | SWS Operating LLC | | Oil Operator | Jan 2024 |
| 842 | Sydson D'Oro Expl. Co. | Houston, TX 77079 | Oil & Gas Operator | Jan 1992 |
| 843 | T & S Mud Disposal LLC | Lindsay, OK 73052-0754 | Oil Operator | Mar 2013 |
| 844 | T C Craighead & Company LLC | Ardmore, OK 73402-0576 | Oil & Gas Operator | Aug 2019 |
| 845 | Tack Operating LLC | Oklahoma City, OK 73172-1492 | Oil & Gas Operator | Aug 2021 |
| 846 | Tag Oil Co LLC | | Oil & Gas Operator | Feb 2024 |
| 847 | Tahoe Exploration Inc. | Abilene, TX 79608 | Oil & Gas Operator | Mar 2016 |
| 848 | Tapoil Inc | Elmore City, OK 73433-9077 | Oil & Gas Operator | Jul 2021 |
| 849 | Targa Pipeline Mid-Continent LLC | Sulphur, LA 70665 | Oil & Gas Operator | Jun 2018 |
| 850 | Tbi Exploration Inc | Englewood, CO 801556525 | Oil & Gas Operator | Jun 2011 |
| 851 | TD Oil & Gas LLC | Duncan, OK 73533-1851 | Oil Operator | Apr 2023 |
| 852 | Te-Ray Energy, Inc. | Oklahoma City, OK 73108 | Oil & Gas Operator | Jan 2024 |
| 853 | Te-Ray Resources, LLC | Oklahoma City, OK 73142 | Oil & Gas Operator | May 2024 |
| 854 | Technical Energy Services, Inc. | Norman, OK 73070 | Oil & Gas Operator | Jan 2024 |
| 855 | Ten Grand Energy Company Inc | Nachogdoches, TX 75963-1880 | Oil Operator | Mar 2011 |
| 856 | Tenaska Marketing Ventures | Omaha, NE 68154 | Oil & Gas Operator | Mar 2021 |
| 857 | Tenneco Oil Company | Oklahoma City, OK 73125 | Oil & Gas Operator | Feb 2024 |
| 858 | Teocalli Exploration LLC | | Oil & Gas Operator | Feb 2024 |
| 859 | Terra Production Company | Okemah, OK 74859-5924 | Oil & Gas Operator | Apr 2020 |
| 860 | Territory Resources LLC | Stillwater, OK 74074-1869 | Oil & Gas Operator | Feb 2024 |
| 861 | Texaco Expl. And Prod. Inc. | Houston, TX 77236 | Oil & Gas Operator | Jan 2024 |
| 862 | Texaco Inc | Kingfisher, OK 73750 | Oil & Gas Operator | Dec 2017 |
| 863 | Texaco Oils, Inc. | Tulsa, OK 74102-2420 | Oil & Gas Operator | Jan 2003 |
| 864 | Texas Meridian Operating Co. Inc | Houston, TX 77079 | Oil & Gas Operator | Oct 1993 |
| 865 | The Quintin Little Company Inc | Ardmore, OK 73402-1509 | Oil & Gas Operator | Feb 2024 |
| 866 | The Twenty Eleven Corp Inc | Ada, OK 74820-3605 | Oil Operator | Feb 2024 |
| 867 | Thomas Exploration Company | Tulsa, OK 74136-6302 | Oil & Gas Operator | Feb 2024 |
| 868 | Thomas Oil Company LLC | | Oil Operator | Feb 2024 |
| 869 | Thunder Oil & Gas, LLC | Ardmore, OK 73402 | Oil & Gas Operator | Jan 2024 |
| 870 | Tide West Oil Company | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2021 |
| 871 | Tiger Trucks Inc | Seminole, OK 74868 | Oil & Gas Operator | Feb 2024 |
| 872 | Tilley Oil Inc | Velma, OK 73491-0811 | Oil & Gas Operator | Feb 2024 |
| 873 | Titan Resources LTD | Limaville, OH 44640 | Oil & Gas Operator | Mar 2024 |
| 874 | TJ Oil Company | Borger, TX 79008 | Oil & Gas Operator | May 2024 |
| 875 | TLC Oil And Gas | Duncan, OK 73533-9477 | Oil & Gas Operator | Oct 2015 |
| 876 | TLS Oil & Gas Inc | Kingfisher, OK 73750-0901 | Oil & Gas Operator | Jan 2024 |
| 877 | Toklan Oil And Gas Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Feb 2024 |
| 878 | Tomar Petroleum Inc | Dallas, TX 75225 | Oil & Gas Operator | Mar 2001 |
| 879 | Tomlinson W E | Comanche, OK 73529-9561 | Oil Operator | Aug 1996 |
| 880 | Tony'S Disposal Service Inc | Yale, OK 74085-0335 | Oil Operator | Aug 1997 |
| 881 | Tonys Crude Oil Reclaiming Plant Inc | | Oil Operator | Jan 2024 |
| 882 | Totah Production | Duncan, OK 73533-9406 | Oil Operator | Mar 2015 |
| 883 | Transfuel Resources Co | Houston, TX 77215 | Oil & Gas Operator | Aug 2013 |
| 884 | Trek Resources, Inc. | Dallas, TX 75207 | Oil & Gas Operator | May 2024 |
| 885 | Tri Production Inc | Healdton, OK 73438-0177 | Oil & Gas Operator | Jan 2024 |
| 886 | Triangle Interprises Inc | Justin, TX 76247-0598 | Oil & Gas Operator | Jun 2015 |
| 887 | Triple C Properties Inc | Seminole, OK 74818-0481 | Oil & Gas Operator | Jun 2023 |
| 888 | Tripower Resources, Inc. | Ardmore, OK 73402 | Oil & Gas Operator | Mar 2020 |
| 889 | Trout Disposal Well Inc | Hammon, OK 73650-0292 | Oil & Gas Operator | Jul 2016 |
| 890 | Troy Energy Operating LLC | | Oil & Gas Operator | Feb 2024 |
| 891 | Turner Jeff | Marlow, OK 73055-9864 | Oil & Gas Operator | Apr 2007 |
| 892 | Turner Randall L | Duncan, OK 73533-4826 | Oil Operator | Feb 2024 |
| 893 | Twenty/Twenty Oil & Gas Inc | Hennessey, OK 73742-0247 | Oil & Gas Operator | Feb 2024 |
| 894 | Twilight Energy LLC | Fort Worth, TX 76185 | Oil & Gas Operator | May 2024 |
| 895 | Txo Production Corp. | Ganado, TX 77962 | Oil & Gas Operator | Aug 2022 |
| 896 | Txok Energy Resources Company | Tulsa, OK 74172-0140 | Oil & Gas Operator | Feb 2017 |
| 897 | Umc Petroleum Corporation | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 898 | Unbridled Resources, LLC | Houston, TX 77002 | Oil & Gas Operator | May 2024 |
| 899 | Union Oil Co Of California | Midland, TX 79706 | Oil & Gas Operator | Jan 2022 |
| 900 | Unit Petroleum Company | Tulsa, OK 74170 | Oil & Gas Operator | May 2024 |