| 601 | Terra Production Company | Okemah, OK 74859-5924 | Oil & Gas Operator | Apr 2020 |
| 602 | Terry Jack | Konawa, OK 74849-0337 | Oil Operator | Feb 2012 |
| 603 | Tex-Star Production | Dallas, TX 75206 | Oil & Gas Operator | May 2025 |
| 604 | Texaco Inc | Kingfisher, OK 73750 | Oil & Gas Operator | Dec 2017 |
| 605 | Texakoma Oil & Gas Corp | Dallas, TX 75240 | Oil & Gas Operator | Sep 2014 |
| 606 | The Guinn Company LLC | Asher, OK 74826-6012 | Oil & Gas Operator | Mar 2025 |
| 607 | Thunder Oil & Gas, LLC | Ardmore, OK 73402 | Oil & Gas Operator | Apr 2025 |
| 608 | Tide West Oil Company | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2021 |
| 609 | Tidewater Operating Co Inc | Tulsa, OK 74136-6308 | Oil & Gas Operator | May 2025 |
| 610 | Tiger Oil Company | Dallas, TX 75221 | Oil & Gas Operator | May 2007 |
| 611 | Titan Oil & Gas Corporation | Edmond, OK 73013-5417 | Oil & Gas Operator | Apr 2025 |
| 612 | Tolson Gary | Seminole, OK 74868-3267 | Oil & Gas Operator | Apr 2025 |
| 613 | Toma Explorations LLC | Shawnee, OK 74801-6925 | Oil & Gas Operator | Feb 2025 |
| 614 | Torch Operating Company | Houston, TX 77010 | Oil & Gas Operator | Mar 2015 |
| 615 | Totalfinaelf E&P USA Inc | Houston, TX 77024 | Oil & Gas Operator | Jul 2007 |
| 616 | Tracy & Associates Inc | Ada, OK 74820 | Oil & Gas Operator | Apr 2014 |
| 617 | Transok LLC | Oklahoma City, OK 73124-0300 | Oil & Gas Operator | Jul 2020 |
| 618 | Trek Resources, Inc. | Dallas, TX 75207 | Oil & Gas Operator | Jul 2025 |
| 619 | Trenchco Inc | Shawnee, OK 74802-3577 | Oil & Gas Operator | Apr 2015 |
| 620 | Trenon Oil & Gas Inc | Oklahoma City, OK 73112-4279 | Oil & Gas Operator | Sep 1996 |
| 621 | Trepel Petroleum Exploration & | | Oil & Gas Operator | Apr 2014 |
| 622 | Triad Energy Corp. Of Texas | Houston, TX 77057-2696 | Oil & Gas Operator | Sep 2014 |
| 623 | Triad Energy, Inc. | Oklahoma City, OK 73105-1401 | Oil & Gas Operator | May 2025 |
| 624 | Trineha Inc | Ardmore, OK 73402-2478 | Oil & Gas Operator | Jun 2009 |
| 625 | Triple 7 Energy Company Inc | Prague, OK 74864 | Oil Operator | Feb 1997 |
| 626 | Tripower Resources LLC | Ardmore, OK 73402 | Oil & Gas Operator | Jul 2025 |
| 627 | Tripower Resources, Inc. | Ardmore, OK 73402 | Oil & Gas Operator | Mar 2020 |
| 628 | Trivestco Energy Company | Ponca City, OK 74601 | Oil & Gas Operator | May 2025 |
| 629 | True Performance Administrators LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2025 |
| 630 | Truevine Operating LLC | Ada, OK 74821-1422 | Oil & Gas Operator | Apr 2025 |
| 631 | Tuscany Operating LLC | Oklahoma City, OK 73106 | Oil & Gas Operator | Sep 2014 |
| 632 | Txo Production Corp. | Ganado, TX 77962 | Oil & Gas Operator | Aug 2022 |
| 633 | Umc Petroleum Corporation | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 634 | Unbridled Resources, LLC | Houston, TX 77002 | Oil & Gas Operator | Jul 2025 |
| 635 | United Energy & Expl Inc | Ada, OK 74821-2449 | Oil & Gas Operator | Apr 2025 |
| 636 | United Energy & Exploration LLC | Ada, OK 74821 | Oil & Gas Operator | Apr 2025 |
| 637 | United Energy Develop Co LTD | Bartlesville, OK 74003 | Oil Operator | Mar 2004 |
| 638 | Upland Production Company | Edmond, OK 73083 | Oil & Gas Operator | Jul 2025 |
| 639 | Urban Oil & Gas Group, LLC | Plano, TX 75074 | Oil & Gas Operator | Jul 2025 |
| 640 | Valjohn Energy Corporation | Dover, OK 73734 | Oil & Gas Operator | Apr 2025 |
| 641 | Valley Petrol Consulting Inc | Denton, TX 76205 | Oil Operator | Apr 2025 |
| 642 | Vantage Point Operating Co | Houston, TX 77057 | Oil & Gas Operator | Dec 2014 |
| 643 | Vaquero Resources, LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Apr 2025 |
| 644 | Vastar Resources Inc | Houston, TX 77253 | Oil & Gas Operator | Mar 2025 |
| 645 | Vaughan Otto M | | Oil & Gas Operator | Apr 2014 |
| 646 | Vaughan Production Company, Inc. | Norman, OK 73072 | Oil & Gas Operator | Sep 2014 |
| 647 | Veenker Resources, Inc. | Oklahoma City, OK 73113 | Oil & Gas Operator | May 2025 |
| 648 | Vega Energy Company | Nichols Hill, OK 73116 | Oil & Gas Operator | Sep 2015 |
| 649 | Venis Dwain | Seminole, OK 74818-1975 | Oil & Gas Operator | Feb 2012 |
| 650 | Venis Exploration Company | Aledo, TX 76008 | Oil & Gas Operator | Oct 2024 |
| 651 | Viersen & Cochran Drilling Company | | Oil & Gas Operator | May 2015 |
| 652 | Vintage Petroleum, Inc. | Houston, TX 77046 | Oil & Gas Operator | Apr 2025 |
| 653 | Vitol Inc. | Houston, TX 77098 | Oil & Gas Operator | Sep 2023 |
| 654 | Walsh Jr F Howard | Fort Worth, TX 76102-4773 | Oil & Gas Operator | Apr 2025 |
| 655 | Walsh Jr F Howard Opr Co Inc | Fort Worth, TX 76102-4773 | Oil & Gas Operator | Feb 2016 |
| 656 | Walters Frank | Pernell, OK 73076 | Oil & Gas Operator | Sep 2014 |
| 657 | Waltman Family LP | Maud, OK 74854-2603 | Oil Operator | Apr 2025 |
| 658 | Waltman Oil & Gas | Maud, OK 74854-9739 | Oil Operator | Sep 2001 |
| 659 | Ware Jimmy M | Seminole, OK 74868 | Oil & Gas Operator | Nov 1998 |
| 660 | Warren American Oil Company LLC | Tulsa, OK 74147 | Oil & Gas Operator | Jul 2025 |
| 661 | Watkins Paul | Bixby, OK 74008-4018 | Oil & Gas Operator | Jun 2004 |
| 662 | Wellco Energy Inc | Harrah, OK 73045 | Oil & Gas Operator | Apr 2025 |
| 663 | Wenexco, Inc. | Streetman, TX 75859 | Oil & Gas Operator | Jul 2025 |
| 664 | Wentworth Operating Company | Oklahoma City, OK 73162-1863 | Oil & Gas Operator | May 2025 |
| 665 | Western Oil Company | Midland, TX 79702 | Oil & Gas Operator | Jul 2014 |
| 666 | Weststar Operating Company | Santa Anna, TX 76878 | Oil & Gas Operator | Mar 2015 |
| 667 | Westwind Exploration Company | Oklahoma City, OK 73123 | Oil & Gas Operator | Oct 1998 |
| 668 | Whitaker Raymond | Paul Valley, OK 73075-1041 | Oil & Gas Operator | May 2007 |
| 669 | White Mike Oil Field Service | Edmond, OK 73034 | Oil & Gas Operator | Jan 2013 |
| 670 | White N J & White J B | Paden, OK 74860-0114 | Oil Operator | Aug 2013 |
| 671 | Whitley Robert L | Saint Louis, OK 74866-0004 | Oil & Gas Operator | Sep 2014 |
| 672 | Whitmar Exploration Company | Denver, CO 80202 | Oil & Gas Operator | Apr 2025 |
| 673 | Wieck Oil Company LLC | Cromwell, OK 74859 | Oil Operator | Aug 2014 |
| 674 | Wil-MC Oil Corporation The | Irving, TX 75015-2510 | Oil & Gas Operator | Mar 1999 |
| 675 | Wilco Oil & Gas Corporation | Oklahoma City, OK 73159-6229 | Oil & Gas Operator | Dec 2023 |
| 676 | Wildhorse Oil & Gas Corporation | Ardmore, OK 73402 | Oil & Gas Operator | May 2019 |
| 677 | Wildhorse Operating Company | Ardmore, OK 73402 | Oil & Gas Operator | Jul 2025 |
| 678 | Wilkison Richard W | Oklahoma City, OK 73107 | Oil Operator | Mar 2011 |
| 679 | Williams Dale | Konawa, OK 74849-9211 | Oil Operator | Apr 2025 |
| 680 | Williams Roger F | Tulsa, OK 74152-0951 | Oil & Gas Operator | May 2013 |
| 681 | Williford Energy Company | Tulsa, OK 74135 | Oil & Gas Operator | Jul 2025 |
| 682 | Wise Oil & Gas Company LLC | Shawnee, OK 74801-8507 | Oil & Gas Operator | Feb 2024 |
| 683 | WJM Oil Inc | Shawnee, OK 74804-3203 | Oil & Gas Operator | Jan 2013 |
| 684 | WM Energy LLC | Asher, OK 74826 | Oil & Gas Operator | Apr 2025 |
| 685 | Yale Oil Association, Inc. | Oklahoma City, OK 73105 | Oil & Gas Operator | May 2025 |
| 686 | Yarhola Production Company | Drumright, OK 74030 | Oil & Gas Operator | May 2025 |
| 687 | Zenergy Inc | Tulsa, OK 74136 | Oil & Gas Operator | May 2025 |
| 688 | Zumyers Inc | Newalla, OK 74857-0259 | Oil Operator | Apr 2003 |
| 689 | Zzron Inc. | Midland, TX 79704 | Oil & Gas Operator | Aug 2003 |