| 701 | St. Mary Operating Company | Denver, CO 80203 | Oil & Gas Operator | Mar 2019 |
| 702 | Stacy Operating LLC | Cushing, OK 74023 | Oil & Gas Operator | Dec 2025 |
| 703 | Stevens & Tull, Inc. | Midland, TX 79702 | Oil & Gas Operator | Jun 2000 |
| 704 | Still A B Wel-Service Inc | Drumright, OK 74030-0787 | Oil & Gas Operator | Jul 2019 |
| 705 | Still Alex B Estate Of | Sagle, ID 83860-0644 | Oil & Gas Operator | Nov 2018 |
| 706 | Stillwater Oil & Gas | Irving, TX 75062 | Oil & Gas Operator | Mar 2015 |
| 707 | Stover Company | Tulsa, OK 74152-0786 | Oil & Gas Operator | Jan 2013 |
| 708 | STP Cherokee Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2014 |
| 709 | Stroud Oil Properties, Inc. | Fort Worth, TX 76102 | Oil & Gas Operator | May 2013 |
| 710 | Sullivan & Co. | Tulsa, OK 74114 | Oil & Gas Operator | May 2022 |
| 711 | Sultex Oil & Gas Inc | Houston, TX 77059-3126 | Oil & Gas Operator | Aug 2002 |
| 712 | Sundown Energy LP | Dallas, TX 75248 | Oil & Gas Operator | Mar 2026 |
| 713 | Sundown Energy, Inc. | Dallas, TX 75240 | Oil & Gas Operator | May 2025 |
| 714 | SWN Production LLC | Spring, TX 77389-4954 | Oil & Gas Operator | Feb 2022 |
| 715 | Sylvan Oil Operating Company | Tulsa, OK 74103-3516 | Oil & Gas Operator | Apr 2016 |
| 716 | T B K Energy Company | Brenham, TX 77833 | Oil & Gas Operator | Dec 2025 |
| 717 | Tack Operating LLC | Oklahoma City, OK 73172-1492 | Oil & Gas Operator | Aug 2021 |
| 718 | Tat, Inc. | Oklahoma City, OK 73127 | Oil & Gas Operator | Feb 2023 |
| 719 | Taylor International Inc | Drumright, OK 74030-1173 | Oil & Gas Operator | Mar 2020 |
| 720 | Taylor R C Companies Inc | Oklahoma City, OK 73118-4015 | Oil & Gas Operator | May 2021 |
| 721 | Taylor R Clark Exploration Inc | | Oil & Gas Operator | Aug 1992 |
| 722 | Tcina Inc | Seminole, OK 74868 | Oil & Gas Operator | May 2023 |
| 723 | Teocalli Exploration LLC | Kingfisher, OK 73750 | Oil & Gas Operator | Jan 2026 |
| 724 | Territory Resources LLC | Stillwater, OK 74074-1869 | Oil & Gas Operator | Feb 2026 |
| 725 | Terry Production Co | Stroud, OK 74079-0475 | Oil & Gas Operator | Aug 2008 |
| 726 | Terzan Energy II LLC | Chandler, OK 74834 | Oil & Gas Operator | Jan 2026 |
| 727 | Tessera Energy LLC | Oklahoma City, OK 73120 | Oil & Gas Operator | Dec 2025 |
| 728 | Tex-Star Production | Dallas, TX 75206 | Oil & Gas Operator | Dec 2025 |
| 729 | Tex/Con Oil & Gas Company | Houston, TX 77074 | Oil & Gas Operator | Feb 2001 |
| 730 | Texaco Exploration & Prod Inc | Houston, TX 77236 | Oil & Gas Operator | Dec 2025 |
| 731 | Texaco Inc | Kingfisher, OK 73750 | Oil & Gas Operator | Dec 2017 |
| 732 | Texaco Oils Inc | Tulsa, OK 74102-2420 | Oil & Gas Operator | Jan 2003 |
| 733 | Texakoma Oil & Gas Corp | Dallas, TX 75240 | Oil & Gas Operator | Sep 2014 |
| 734 | Texas United Petroleum Inc | Dallas, TX 75243 | Oil & Gas Operator | Jun 2003 |
| 735 | The Guinn Company LLC | Asher, OK 74826-6012 | Oil & Gas Operator | Dec 2025 |
| 736 | The KT Oil Company LLC | Ada, OK 74820 | Oil & Gas Operator | Dec 2025 |
| 737 | Thomas Blankenship Dba B S Oil Company | Lindsay, OK 73052 | Oil & Gas Operator | Dec 2025 |
| 738 | Thomas, R. W. Inc. | Norman, OK 73070 | Oil & Gas Operator | Apr 2015 |
| 739 | Thompson, Joe L., Inc. | Oklahoma City, OK 73132 | Oil & Gas Operator | Oct 2005 |
| 740 | Thunder Oil & Gas, LLC | Ardmore, OK 73402 | Oil & Gas Operator | Jan 2026 |
| 741 | TLS Oil & Gas Inc | Kingfisher, OK 73750-0901 | Oil & Gas Operator | Dec 2025 |
| 742 | Todd John C | Oklahoma City, OK 73112-8049 | Oil & Gas Operator | May 2015 |
| 743 | Toklan Oil And Gas Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Dec 2025 |
| 744 | Toklan Oil Corporation | Tulsa, OK 74103 | Oil & Gas Operator | Mar 2015 |
| 745 | Toland & Johnston Inc | Edmond, OK 73034 | Oil & Gas Operator | Jan 2026 |
| 746 | Trail Ridge Energy Partners, LLC | Grapevine, TX 76051 | Oil & Gas Operator | Jan 2026 |
| 747 | Trailblazer Energy LLC | Plano, TX 75075 | Oil & Gas Operator | Jan 2026 |
| 748 | Trans Terra Corp Int'L | Amarillo, TX 79159-0370 | Oil & Gas Operator | Jul 1993 |
| 749 | Trend Gas & Oil Inc | Jenks, OK 74037 | Oil & Gas Operator | Dec 2000 |
| 750 | Trenon Oil & Gas Inc | Oklahoma City, OK 73112-4279 | Oil & Gas Operator | Sep 1996 |
| 751 | Tridon Oil Inc | Lafayette, LA 70505-2305 | Gas Operator | Dec 2013 |
| 752 | Triple H Operating | Tryon, OK 74875-6235 | Oil Operator | Apr 2022 |
| 753 | Triple W Oil Inc | Chandler, OK 74834-0546 | Oil & Gas Operator | May 2013 |
| 754 | Tripower Resources LLC | Ardmore, OK 73402 | Oil & Gas Operator | Mar 2026 |
| 755 | Tripower Resources, Inc. | Ardmore, OK 73402 | Oil & Gas Operator | Mar 2020 |
| 756 | True Performance Administrators LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Sep 2025 |
| 757 | Truevine Operating LLC | Ada, OK 74821-1422 | Oil & Gas Operator | Dec 2025 |
| 758 | Tulsa Minerals Inc | Tulsa, OK 74136-1045 | Oil & Gas Operator | May 2013 |
| 759 | Tuscany Operating LLC | Oklahoma City, OK 73106 | Oil & Gas Operator | Sep 2014 |
| 760 | Twenty/Twenty Oil & Gas Inc | Hennessey, OK 73742 | Oil & Gas Operator | Jan 2026 |
| 761 | Txo Production Corp. | Ganado, TX 77962 | Oil & Gas Operator | Aug 2022 |
| 762 | Ultramar Oil & Gas LTD | Houston, TX 77060 | Oil & Gas Operator | Jul 1995 |
| 763 | Underwood Oil And Gas LLC | Chandler, OK 74834-1414 | Oil & Gas Operator | Jan 2026 |
| 764 | Union Valley Petroleum Corp | Enid, OK 73701 | Oil & Gas Operator | Jan 2026 |
| 765 | United Energy & Expl Inc | Ada, OK 74821-2449 | Oil & Gas Operator | Dec 2025 |
| 766 | United Energy & Exploration LLC | Ada, OK 74821 | Oil & Gas Operator | Jan 2026 |
| 767 | United Western Energy Corp | Oklahoma City, OK 73105 | Oil & Gas Operator | Mar 1994 |
| 768 | Vaca Operating Company LLC | Pacific PLSDS, CA 90272 | Oil & Gas Operator | Aug 2017 |
| 769 | Valancy Operating LLC | Goldsby, OK 73093 | Oil & Gas Operator | Jan 2026 |
| 770 | Valar Petroleum Inc | Houston, TX 77069 | Oil & Gas Operator | May 2006 |
| 771 | Van Horn Oil & Gas Inc | Tulsa, OK 74170 | Oil & Gas Operator | Nov 1998 |
| 772 | Vaughan Otto M | | Oil & Gas Operator | Apr 2014 |
| 773 | Vaughan Production Company, Inc. | Norman, OK 73072 | Oil & Gas Operator | Sep 2014 |
| 774 | Veenker Resources Inc | Oklahoma City, OK 73113 | Oil & Gas Operator | Jan 2026 |
| 775 | Ventura Energy Services LLC | Tulsa, OK 74136-5108 | Oil & Gas Operator | Mar 2020 |
| 776 | Vess Oil Corporation | Dallas, TX 75201 | Oil & Gas Operator | Mar 2026 |
| 777 | Victory Petroleum Inc | Tulsa, OK 74170-0354 | Oil & Gas Operator | May 2013 |
| 778 | Viersen & Cochran Drilling Company | | Oil & Gas Operator | May 2015 |
| 779 | Vitol Inc. | Houston, TX 77098 | Oil & Gas Operator | Sep 2023 |
| 780 | W F D Oil Corp. | Edmond, OK 73012 | Oil & Gas Operator | Jan 2026 |
| 781 | Wagner Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2026 |
| 782 | Walker Corporation (The) | Oklahoma City, OK 73156 | Oil & Gas Operator | May 2006 |
| 783 | Wallace Oil & Gas Inc | Oklahoma City, OK 73156 | Oil & Gas Operator | Mar 2026 |
| 784 | Walsh Jr F Howard | Fort Worth, TX 76102-4773 | Oil & Gas Operator | Dec 2025 |
| 785 | Ward Kelly | Drumright, OK 74030-5661 | Oil & Gas Operator | Feb 2015 |
| 786 | Waterford Energy Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Nov 1998 |
| 787 | Watkins J L | Henryetta, OK 74437 | Oil & Gas Operator | Jan 2026 |
| 788 | Webb Donna Delan Dba Petrodudes | Crescent, OK 73028 | Oil & Gas Operator | Dec 2025 |
| 789 | Wellco Energy Inc | Harrah, OK 73045 | Oil & Gas Operator | Dec 2025 |
| 790 | Wenexco, Inc. | Streetman, TX 75859 | Oil & Gas Operator | Mar 2026 |
| 791 | Wheeler Richard Jr | Oklahoma City, OK 73112-8857 | Oil & Gas Operator | Mar 2005 |
| 792 | White Monty & Terry Production | Paden, OK 74860 | Oil & Gas Operator | May 2013 |
| 793 | White Operating Company | Oklahoma City, OK 73159-7136 | Oil & Gas Operator | Jan 2026 |
| 794 | White Star Petroleum LLC | Oklahoma City, OK 73116-7906 | Oil & Gas Operator | Dec 2025 |
| 795 | Whitley Oil & Gas Inc | Owasso, OK 74055 | Oil & Gas Operator | Jun 2009 |
| 796 | Wil-MC Oil Corporation The | Irving, TX 75015-2510 | Oil & Gas Operator | Mar 1999 |
| 797 | Wildhorse Oil & Gas Corporation | Ardmore, OK 73402 | Oil & Gas Operator | May 2019 |
| 798 | Wilkins L L E & O Company | Shawnee, OK 74801 | Oil & Gas Operator | Aug 2018 |
| 799 | Williams, Clayton Energy, Inc. | Houston, TX 77070 | Oil & Gas Operator | Mar 2026 |
| 800 | Wilshire Oil LLC | Oklahoma City, OK 73116 | Oil & Gas Operator | Dec 2025 |