| 601 | Singer Oil Co LLC | Hennessey, OK 73742-0307 | Oil & Gas Operator | Jan 2024 |
| 602 | Singer Oil Company | Oklahoma City, OK 73148 | Oil & Gas Operator | Dec 2023 |
| 603 | Siosi Oil & Gas Company | Tulsa, OK 74170-2163 | Oil & Gas Operator | Nov 2013 |
| 604 | Siven Crude Oil Company | Lomita, CA 90717 | Oil & Gas Operator | Apr 2018 |
| 605 | Smith Brothers Enterprises | Ardmore, OK 73402 | Oil Operator | Jul 1998 |
| 606 | Smith Manus L MFG Inc | Oklahoma City, OK 73147 | Oil & Gas Operator | Nov 1998 |
| 607 | Smith Max Dean | Wewoka, OK 74884-1333 | Oil & Gas Operator | Oct 2023 |
| 608 | SNR Central Oklahoma Operating LLC | | Oil Operator | Jan 2024 |
| 609 | SNR Operating, LLC | Oklahoma City, OK 73116 | Oil & Gas Operator | Apr 2024 |
| 610 | Snuffy'S Oilfield Service Inc | Hennessey, OK 73742-6511 | Oil & Gas Operator | Nov 2014 |
| 611 | Sooner Drilling Inc | Shawnee, OK 74802-0037 | Oil & Gas Operator | Jan 2005 |
| 612 | Sooner Pipe & Supply Corp | | Oil & Gas Operator | Nov 2004 |
| 613 | Southland Energy Corporation | Houston, TX 77060 | Oil & Gas Operator | Aug 2022 |
| 614 | Southwest Royalties Inc | Midland, TX 79710 | Oil & Gas Operator | Apr 2024 |
| 615 | SP Energy Development Company | Seattle, WA 98101-3277 | Oil & Gas Operator | Mar 2015 |
| 616 | Special Energy Corporation | Stillwater, OK 74076 | Oil & Gas Operator | Apr 2024 |
| 617 | Spess Oil Company Inc | Cleveland, OK 74020-4617 | Oil & Gas Operator | Jan 2024 |
| 618 | Splawn & Splawn | Saint Louis, OK 74866-0098 | Oil & Gas Operator | Aug 2023 |
| 619 | Spring Operating Company | Edmond, OK 73083-2048 | Oil & Gas Operator | Jan 2024 |
| 620 | Stacy Operating LLC | Cushing, OK 74023-0511 | Oil & Gas Operator | Dec 2023 |
| 621 | Staghorn Petroleum II LLC | Tulsa, OK 74103 | Oil & Gas Operator | Jan 2024 |
| 622 | Stalnaker Oil Company | Maud, OK 74854-0295 | Oil Operator | May 2017 |
| 623 | Stark Oil Properties | Asher, OK 74826 | Oil & Gas Operator | Jan 1997 |
| 624 | Sterling Oil Of Okla Inc | Tulsa, OK 74170-2163 | Oil & Gas Operator | Nov 2006 |
| 625 | Stobaugh G B Trust | Oklahoma City, OK 73124 | Oil Operator | Jul 2023 |
| 626 | Stover Company | Tulsa, OK 74152-0786 | Oil & Gas Operator | Jan 2013 |
| 627 | STP Cherokee, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2014 |
| 628 | STP Newco Inc | Oklahoma City, OK 73102-5641 | Oil & Gas Operator | Jul 2021 |
| 629 | Strat Land Exploration Company | Tulsa, OK 74103 | Oil & Gas Operator | Dec 2023 |
| 630 | Stream Energy, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Dec 2023 |
| 631 | Streamline Oil And Gas Inc | Alex, OK 73002-0117 | Oil & Gas Operator | Jan 2024 |
| 632 | Striker Management Co LLC | Shawnee, OK 74801 | Oil & Gas Operator | Dec 2023 |
| 633 | Sullivan & Co. | Tulsa, OK 74114 | Oil & Gas Operator | May 2022 |
| 634 | Sullivan And Company LLC | Tulsa, OK 74119 | Oil & Gas Operator | Dec 2023 |
| 635 | Summit Resources Management LLC | Edmond, OK 73083 | Oil & Gas Operator | Dec 2023 |
| 636 | Sun Refining & Marketing | Philadelphia, PA 19103 | Oil & Gas Operator | Jul 2015 |
| 637 | Sunoco Partners MKT & Terminal | Tulsa, OK 74102-2039 | Oil & Gas Operator | Jan 2019 |
| 638 | Superior Production MGMT Inc | Calumet, OK 73014 | Oil & Gas Operator | Mar 2015 |
| 639 | Superior Saltwater Disposal LLC | | Oil & Gas Operator | Dec 2016 |
| 640 | Swadley Roy W & Judith I | Holdenville, OK 74848-0794 | Oil & Gas Operator | Mar 2015 |
| 641 | Synergex Inc | Oklahoma City, OK 73134 | Oil & Gas Operator | Dec 2023 |
| 642 | T & K Oil Inc | Stephens, AR 71764 | Oil Operator | Dec 2023 |
| 643 | T & S Mud Disposal LLC | Lindsay, OK 73052-0754 | Oil Operator | Mar 2013 |
| 644 | T B K Energy Company | | Oil & Gas Operator | Jan 2024 |
| 645 | T T & T Inc | Shawnee, OK 74802-3694 | Oil & Gas Operator | Jan 1994 |
| 646 | Tack Operating LLC | Oklahoma City, OK 73172-1492 | Oil & Gas Operator | Aug 2021 |
| 647 | Tag Petroleum Inc | Stillwater, OK 74076-1389 | Oil & Gas Operator | Jan 2021 |
| 648 | Tcina Inc | Seminole, OK 74818-0470 | Oil & Gas Operator | May 2023 |
| 649 | TD Operating Inc | El Reno, OK 73036-1035 | Oil & Gas Operator | Jan 2024 |
| 650 | Tennessee Gas Pipeline Company | Houston, TX 77252 | Oil & Gas Operator | Dec 2011 |
| 651 | Terra Production Company | Okemah, OK 74859-5924 | Oil & Gas Operator | Apr 2020 |
| 652 | Terry Jack | Konawa, OK 74849-0337 | Oil Operator | Feb 2012 |
| 653 | Tex-Star Production | Dallas, TX 75360-0577 | Oil & Gas Operator | Jan 2024 |
| 654 | Texaco Inc | Kingfisher, OK 73750 | Oil & Gas Operator | Dec 2017 |
| 655 | Texakoma Oil & Gas Corp | Dallas, TX 75240 | Oil & Gas Operator | Sep 2014 |
| 656 | The Guinn Company LLC | Asher, OK 74826-6012 | Oil & Gas Operator | Dec 2023 |
| 657 | Thunder Oil & Gas, LLC | Ardmore, OK 73402 | Oil & Gas Operator | Jan 2024 |
| 658 | Tide West Oil Company | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2021 |
| 659 | Tidewater Operating Co Inc | Tulsa, OK 74136-6308 | Oil & Gas Operator | Jan 2024 |
| 660 | Tiger Oil Company | Dallas, TX 75221 | Oil & Gas Operator | May 2007 |
| 661 | Tiger Trucks Inc | Seminole, OK 74868 | Oil & Gas Operator | Jan 2024 |
| 662 | Titan Oil & Gas Corporation | Edmond, OK 73013-5417 | Oil & Gas Operator | Dec 2023 |
| 663 | Tolson Gary | Seminole, OK 74868-3267 | Oil & Gas Operator | Nov 2023 |
| 664 | Toma Explorations LLC | | Oil & Gas Operator | Dec 2023 |
| 665 | Tonys Crude Oil Reclaiming Plant Inc | | Oil Operator | Dec 2023 |
| 666 | Torch Operating Company | Houston, TX 77010 | Oil & Gas Operator | Mar 2015 |
| 667 | Totalfinaelf E&P USA Inc | Houston, TX 77024 | Oil & Gas Operator | Jul 2007 |
| 668 | Tracy & Associates Inc | Ada, OK 74820 | Oil & Gas Operator | Apr 2014 |
| 669 | Trans Oil Marketing LLC | Abilene, TX 79602 | Oil Operator | Aug 2023 |
| 670 | Transok LLC | Oklahoma City, OK 73124-0300 | Oil & Gas Operator | Jul 2020 |
| 671 | Trek Resources, Inc. | Dallas, TX 75207 | Oil & Gas Operator | Apr 2024 |
| 672 | Trenchco Inc | Shawnee, OK 74802-3577 | Oil & Gas Operator | Apr 2015 |
| 673 | Trenon Oil & Gas Inc | Oklahoma City, OK 73112-4279 | Oil & Gas Operator | Sep 1996 |
| 674 | Trepel Petroleum Exploration & | | Oil & Gas Operator | Apr 2014 |
| 675 | Triad Energy Corp. Of Texas | Houston, TX 77057-2696 | Oil & Gas Operator | Sep 2014 |
| 676 | Triad Energy, Inc. | Oklahoma City, OK 73105-1401 | Oil & Gas Operator | Jan 2024 |
| 677 | Triad Of Oklahoma Inc | | Oil & Gas Operator | Feb 1996 |
| 678 | Trineha Inc | Ardmore, OK 73402-2478 | Oil & Gas Operator | Jun 2009 |
| 679 | Triple 7 Energy Company Inc | Prague, OK 74864 | Oil Operator | Feb 1997 |
| 680 | Triple C Properties Inc | Seminole, OK 74818-0481 | Oil & Gas Operator | Jun 2023 |
| 681 | Triple G Trucks | Asher, OK 74826 | Oil & Gas Operator | Jun 2002 |
| 682 | Tripower Resources LLC | Ardmore, OK 73402 | Oil & Gas Operator | Apr 2024 |
| 683 | Tripower Resources, Inc. | Ardmore, OK 73402 | Oil & Gas Operator | Mar 2020 |
| 684 | Trivestco Energy Company | Ponca City, OK 74601 | Oil & Gas Operator | Jan 2024 |
| 685 | Trout Disposal Well Inc | Hammon, OK 73650-0292 | Oil & Gas Operator | Jul 2016 |
| 686 | True Performance Administrators LLC | | Oil & Gas Operator | Dec 2023 |
| 687 | Truevine Operating LLC | Ada, OK 74821-1422 | Oil & Gas Operator | Dec 2023 |
| 688 | Truth Resources LP | Conroe, TX 77304 | Oil Operator | Sep 2021 |
| 689 | Tuscany Operating LLC | Oklahoma City, OK 73106 | Oil & Gas Operator | Sep 2014 |
| 690 | Txo Production Corp. | Ganado, TX 77962 | Oil & Gas Operator | Aug 2022 |
| 691 | Umc Petroleum Corporation | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 692 | Unbridled Resources, LLC | Houston, TX 77002 | Oil & Gas Operator | Apr 2024 |
| 693 | United Energy & Expl Inc | Ada, OK 74821-2449 | Oil & Gas Operator | Jan 2024 |
| 694 | United Energy & Exploration LLC | Ada, OK 74821 | Oil & Gas Operator | Jan 2024 |
| 695 | United Energy Develop Co LTD | Bartlesville, OK 74003 | Oil Operator | Mar 2004 |
| 696 | United States Trading & Trans | Dallas, TX 75380-3342 | Oil & Gas Operator | Dec 1994 |
| 697 | Upland Production Company | Edmond, OK 73083 | Oil & Gas Operator | Apr 2024 |
| 698 | Urban Oil & Gas Group, LLC | Plano, TX 75074 | Oil & Gas Operator | Apr 2024 |
| 699 | Valjohn Energy Corporation | Oklahoma City, OK 73142-6090 | Oil & Gas Operator | Dec 2023 |
| 700 | Valley Petrol Consulting Inc | | Oil Operator | Jan 2024 |