| 601 | Southwest Royalties Inc | Midland, TX 79710 | Oil & Gas Operator | Dec 2024 |
| 602 | Southwestern Exploration Consultants Inc | Oklahoma City, OK 73118-1116 | Oil & Gas Operator | Oct 2024 |
| 603 | Spark'S Energy Inc | Perry, OK 73077 | Oil & Gas Operator | Nov 2014 |
| 604 | Special Energy Corporation | Stillwater, OK 74076 | Oil & Gas Operator | Dec 2024 |
| 605 | Sperry R J | Dallas, TX 75254-8647 | Oil & Gas Operator | Aug 2013 |
| 606 | Spess Oil Company Inc | Cleveland, OK 74020-4617 | Oil & Gas Operator | Oct 2024 |
| 607 | Spring Valley Oil & Gas Inc | Drummond, OK 73735 | Oil & Gas Operator | Sep 2024 |
| 608 | Stacy Operating LLC | Cushing, OK 74023 | Oil & Gas Operator | Sep 2024 |
| 609 | Statex Petroleum Inc | Dallas, TX 75229 | Oil & Gas Operator | Dec 2000 |
| 610 | Stevens & Tull, Inc. | Midland, TX 79702 | Oil & Gas Operator | Jun 2000 |
| 611 | Stewart K Petroleum Corp | Edmond, OK 73013 | Oil & Gas Operator | Mar 2015 |
| 612 | Still A B Wel-Service Inc | Drumright, OK 74030-0787 | Oil & Gas Operator | Jul 2019 |
| 613 | Still Alex B Estate Of | Sagle, ID 83860-0644 | Oil & Gas Operator | Nov 2018 |
| 614 | Stillwater Oil & Gas | Irving, TX 75062 | Oil & Gas Operator | Mar 2015 |
| 615 | Storm Exploration Inc | Skiatook, OK 74070-1014 | Oil & Gas Operator | Jan 2013 |
| 616 | Summit Resources Management LLC | Edmond, OK 73083 | Oil & Gas Operator | Sep 2024 |
| 617 | Sun Refining & Marketing | Philadelphia, PA 19103 | Oil & Gas Operator | Jul 2015 |
| 618 | Sundance Energy Oklahoma LLC Dba Seo LLC | Denver, CO 80202-3620 | Oil & Gas Operator | Nov 2021 |
| 619 | Sunoco Partners MKT & Terminal | Tulsa, OK 74102-2039 | Oil & Gas Operator | Jan 2019 |
| 620 | Swinea Well Service Inc | Drumright, OK 74030 | Oil & Gas Operator | Mar 2015 |
| 621 | SWN Production LLC | Spring, TX 77389-4954 | Oil & Gas Operator | Feb 2022 |
| 622 | Sydson D'Oro Expl. Co. | Houston, TX 77079 | Oil & Gas Operator | Jan 1992 |
| 623 | T And L Oil Inc | Tonkawa, OK 74653-4530 | Oil & Gas Operator | Sep 2024 |
| 624 | T B K Energy Company | New Braunfels, TX 78130 | Oil & Gas Operator | Sep 2024 |
| 625 | T C Craighead & Company LLC | Ardmore, OK 73401 | Oil & Gas Operator | Aug 2019 |
| 626 | Tack Operating LLC | Oklahoma City, OK 73172-1492 | Oil & Gas Operator | Aug 2021 |
| 627 | Tag Petroleum Inc | Stillwater, OK 74076 | Oil & Gas Operator | Jan 2021 |
| 628 | Tapoil Inc | Elmore City, OK 73433-9077 | Oil & Gas Operator | Jul 2021 |
| 629 | Tapstone Energy LLC | Oklahoma City, OK 73101 | Oil & Gas Operator | Oct 2024 |
| 630 | Tat, Inc. | Oklahoma City, OK 73127 | Oil & Gas Operator | Feb 2023 |
| 631 | Taylor R C Companies Inc | Oklahoma City, OK 73118-4015 | Oil & Gas Operator | May 2021 |
| 632 | Taylor R Clark Exploration Inc | | Oil & Gas Operator | Aug 1992 |
| 633 | Te-Ray Resources, LLC | Oklahoma City, OK 73142 | Oil & Gas Operator | Dec 2024 |
| 634 | Tenneco Oil Company | Oklahoma City, OK 73125 | Oil & Gas Operator | Sep 2024 |
| 635 | Territory Resources LLC | Stillwater, OK 74074-1869 | Oil & Gas Operator | Oct 2024 |
| 636 | Texaco Expl. And Prod. Inc. | Houston, TX 77236 | Oil & Gas Operator | Aug 2024 |
| 637 | Texas Meridian Operating Co. Inc | Houston, TX 77079 | Oil & Gas Operator | Oct 1993 |
| 638 | Thomas J L Engineering Inc | Edmond, OK 73003-0026 | Oil & Gas Operator | Jul 2016 |
| 639 | Three Sands Oil Inc | Perry, OK 73077 | Oil & Gas Operator | May 2023 |
| 640 | Thunder Oil & Gas, LLC | Ardmore, OK 73402 | Oil & Gas Operator | Oct 2024 |
| 641 | Tilley Oil & Gas, Inc. | Oklahoma City, OK 73172 | Oil & Gas Operator | Dec 2024 |
| 642 | Toklan Oil And Gas Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Oct 2024 |
| 643 | Toland & Johnston Inc | Edmond, OK 73034 | Oil & Gas Operator | Oct 2024 |
| 644 | Toomey Oil Company Inc | Tulsa, OK 74120 | Oil & Gas Operator | Oct 2024 |
| 645 | Torch Operating Company | Houston, TX 77010 | Oil & Gas Operator | Mar 2015 |
| 646 | Total Petroleum Inc | Denver, CO 80201-0500 | Oil & Gas Operator | Nov 2006 |
| 647 | Transfuel Resources Co | Houston, TX 77215 | Oil & Gas Operator | Aug 2013 |
| 648 | Trepco Production Company, Inc. | Yukon, OK 73099 | Oil & Gas Operator | Sep 2024 |
| 649 | Trey Resources Inc. | Midland, TX 79710 | Oil & Gas Operator | Oct 2024 |
| 650 | Triad Energy, Inc. | Oklahoma City, OK 73105-1401 | Oil & Gas Operator | Oct 2024 |
| 651 | Tripower Resources LLC | Ardmore, OK 73402 | Oil & Gas Operator | Dec 2024 |
| 652 | Tripower Resources, Inc. | Ardmore, OK 73402 | Oil & Gas Operator | Mar 2020 |
| 653 | Trivestco Energy Company | Ponca City, OK 74601 | Oil & Gas Operator | Sep 2024 |
| 654 | Truevine Operating LLC | Ada, OK 74821-1422 | Oil & Gas Operator | Sep 2024 |
| 655 | Tulum Corporation | Oklahoma City, OK 73101-0125 | Oil & Gas Operator | Sep 2024 |
| 656 | Turpin Ledon Production | Ada, OK 74820-0549 | Oil Operator | Oct 2024 |
| 657 | Twenty First Century Res Inc | Lajolla, CA 92037-7044 | Oil & Gas Operator | Mar 2015 |
| 658 | Twenty/Twenty Oil & Gas Inc | Hennessey, OK 73742 | Oil & Gas Operator | Sep 2024 |
| 659 | Ultramar Oil & Gas LTD | Houston, TX 77060 | Oil & Gas Operator | Jul 1995 |
| 660 | Umc Petroleum Corporation | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 661 | Union Texas Petroleum Corp. | Houston, TX 77252-2120 | Oil & Gas Operator | Dec 2014 |
| 662 | Union Valley Petroleum Corporation | Enid, OK 73701 | Oil & Gas Operator | Sep 2024 |
| 663 | Unit Petroleum Company | Tulsa, OK 74170 | Oil & Gas Operator | Dec 2024 |
| 664 | United Production Company LLC | Edmond, OK 73003 | Oil & Gas Operator | Oct 2024 |
| 665 | United States Trading & Trans | Dallas, TX 75380-3342 | Oil & Gas Operator | Dec 1994 |
| 666 | Universal Fuels Company | | Oil & Gas Operator | Oct 1993 |
| 667 | Vancol Oil Co Inc | Ponca City, OK 74602-0030 | Oil & Gas Operator | May 2018 |
| 668 | Vector Exploration Inc | Oklahoma City, OK 73142-4430 | Oil & Gas Operator | Dec 2018 |
| 669 | Veenker Resources, Inc. | Oklahoma City, OK 73113 | Oil & Gas Operator | Oct 2024 |
| 670 | Victory Petroleum Inc | Tulsa, OK 74170-0354 | Oil & Gas Operator | May 2013 |
| 671 | Vintage Resources Inc | Lindsay, OK 73052-0285 | Oil Operator | Dec 2007 |
| 672 | Vista Energy Inc | Yukon, OK 73085-0827 | Oil & Gas Operator | Mar 2015 |
| 673 | Vitol Inc | Houston, TX 77002 | Oil & Gas Operator | Sep 2023 |
| 674 | Ward Oil Company An Okla Corp | McAlester, OK 74501 | Oil & Gas Operator | Feb 1993 |
| 675 | Ward Petroleum Corporation | Enid, OK 73702 | Oil & Gas Operator | Sep 2024 |
| 676 | Warren American Oil Company LLC | Tulsa, OK 74147 | Oil & Gas Operator | Dec 2024 |
| 677 | Wedgewood Resources USA Inc | Vancouver, BC V6B1V-9000 | Oil & Gas Operator | Jul 2003 |
| 678 | Welch Family Trust | Ada, OK 74820-9643 | Oil & Gas Operator | Apr 2015 |
| 679 | Wellco Energy Inc | Harrah, OK 73045 | Oil & Gas Operator | Sep 2024 |
| 680 | West Bay Exploration Company | Muenster, TX 76252 | Oil & Gas Operator | Sep 2024 |
| 681 | Western Oil And Gas Development Corp | Oklahoma City, OK 73103-3735 | Oil & Gas Operator | Oct 2024 |
| 682 | WFD Oil Corporation | Edmond, OK 73012-0619 | Oil & Gas Operator | Oct 2024 |
| 683 | White Goat Resources LLC | Yukon, OK 73099 | Oil & Gas Operator | Oct 2024 |
| 684 | White Rock Oil & Gas, LLC | Plano, TX 75024 | Oil & Gas Operator | Dec 2024 |
| 685 | White Star Petroleum LLC | Oklahoma City, OK 73116-7906 | Oil & Gas Operator | Sep 2024 |
| 686 | Whiting Oil And Gas Corporation | Houston, TX 77002 | Oil & Gas Operator | Dec 2024 |
| 687 | Wil-MC Oil Corporation The | Irving, TX 75015-2510 | Oil & Gas Operator | Mar 1999 |
| 688 | Wil-Ron Inc | Lucien, OK 73757-9710 | Oil & Gas Operator | Sep 2024 |
| 689 | Wilco Oil & Gas Corporation | Oklahoma City, OK 73159-6229 | Oil & Gas Operator | Dec 2023 |
| 690 | Williams M H | Red Rock, OK 74651-0311 | Oil & Gas Operator | May 2023 |
| 691 | Wind River Exploration Inc | Sewickley, PA 15143 | Oil & Gas Operator | Aug 2024 |
| 692 | WM Energy Corporation | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2015 |
| 693 | Wood Fay C Estate | Enid, OK 73703 | Oil & Gas Operator | Jun 2013 |
| 694 | Woods Petroleum Corporation | Oklahoma City, OK 73112 | Oil & Gas Operator | Mar 2015 |
| 695 | Wroten Wiley Jr | Dallas, TX 75252 | Oil & Gas Operator | Jun 1994 |
| 696 | Xanadu Exploration Company | Broken Arrow, OK 74014 | Oil & Gas Operator | Oct 2024 |
| 697 | Yarhola Production Company | Drumright, OK 74030 | Oil & Gas Operator | Oct 2024 |
| 698 | Zenergy Inc | Tulsa, OK 74136 | Oil & Gas Operator | Oct 2024 |
| 699 | Zim Energy Corporation | Tulsa, OK 74153 | Oil & Gas Operator | Jan 1998 |
| 700 | Zinke & Trumbo LTD | Tulsa, OK 74105 | Oil & Gas Operator | Sep 2017 |