| 601 | Scout Energy Corporation | Edmond, OK 73083-1348 | Oil & Gas Operator | Feb 2024 |
| 602 | Scout Energy Management LLC | Dallas, TX 75240 | Oil & Gas Operator | Apr 2024 |
| 603 | Seagull Mid-South Inc | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 604 | Seals And Brown Oil Operating | Norman, OK 73072-3020 | Oil & Gas Operator | Feb 2024 |
| 605 | Seals Oil Company | Fox, OK 73435-0222 | Oil & Gas Operator | Nov 2011 |
| 606 | Seals Well Service | | Oil Operator | Jul 2001 |
| 607 | Sean M Sharp LLC | Chalk Hill, PA 15421-0392 | Oil Operator | Dec 2023 |
| 608 | Shell Western Expl & Prod Inc | Houston, TX 77251 | Oil & Gas Operator | Mar 2015 |
| 609 | Shidler, Mark L., Inc. | Houston, TX 77055 | Oil & Gas Operator | Apr 2024 |
| 610 | Sikes Oil Company Inc | Velma, OK 73091-0759 | Oil & Gas Operator | Jan 2014 |
| 611 | Silver Creek Oil & Gas, LLC | Flower Mound, TX 75022 | Oil & Gas Operator | Apr 2024 |
| 612 | Simmons, L.B. Energy, Inc. | Midland, TX 79705 | Oil & Gas Operator | Nov 2000 |
| 613 | Six "E" Trading Company | Allen, OK 74825-0346 | Oil & Gas Operator | Sep 2020 |
| 614 | Slawson Clifford Ray | Healdton, OK 73438 | Oil Operator | Jan 1995 |
| 615 | Smith C W & Associates Inc | Oklahoma City, OK 73178-0105 | Oil & Gas Operator | Aug 2013 |
| 616 | Smith Energy Company LLC | Purcell, OK 73080-4772 | Oil & Gas Operator | May 2015 |
| 617 | Snyder Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2015 |
| 618 | Sonata Oil & Gas Corp Inc | Stratford, OK 74812 | Oil & Gas Operator | Apr 2014 |
| 619 | Sooner Exploration & Development Co Inc | Enid, OK 73702-3525 | Oil & Gas Operator | Oct 2023 |
| 620 | Sooner Oilfield Services Inc | Piedmont, OK 73078-0810 | Oil & Gas Operator | Feb 2024 |
| 621 | Southerland Joe Don Dba Taylor Oil Co | Velma, OK 73491 | Oil & Gas Operator | Feb 2024 |
| 622 | Southerland Marquieta Dba Keta Oil Company | Loco, OK 73442-1815 | Oil & Gas Operator | Feb 2024 |
| 623 | Southern Oklahoma Production | | Oil Operator | Jan 2024 |
| 624 | Southern Star Central Gas Pipeline, Inc. | Owensboro, KY 42301 | Oil & Gas Operator | Dec 2023 |
| 625 | Southwestern Exploration Consultants Inc | Oklahoma City, OK 73118-1116 | Oil & Gas Operator | Feb 2024 |
| 626 | Sparks Resources Inc | Bristow, OK 74010 | Oil & Gas Operator | Jan 2024 |
| 627 | Spectrum Field Services Inc | Tulsa, OK 74136-3400 | Oil & Gas Operator | Jan 2004 |
| 628 | Speller Oil Corporation | Oklahoma City, OK 73112 | Oil & Gas Operator | Jan 2024 |
| 629 | Spess Oil Company Inc | Cleveland, OK 74020-4617 | Oil & Gas Operator | Feb 2024 |
| 630 | Spring Operating Company | Edmond, OK 73083-2048 | Oil & Gas Operator | Feb 2024 |
| 631 | Spruiell Drilling Co., Inc. | Holliday, TX 76366 | Oil & Gas Operator | Apr 2024 |
| 632 | SSB Production LC | Ardmore, OK 73402-0998 | Oil & Gas Operator | Feb 2024 |
| 633 | Staghorn Energy, LLC | Tulsa, OK 74103 | Oil & Gas Operator | Jan 2024 |
| 634 | Staghorn Resources, LLC | Tulsa, OK 74103 | Oil & Gas Operator | Apr 2015 |
| 635 | Star Oil Company | Wichita, KS 67230 | Oil & Gas Operator | Feb 2024 |
| 636 | Star Resources LLC | Englewood, CO 80155-5185 | Oil & Gas Operator | Dec 2013 |
| 637 | State Oil Company | | Oil & Gas Operator | Mar 2006 |
| 638 | Stephens & Johnson Operating Co. | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 2024 |
| 639 | Stewart Inc | Ringling, OK 73456 | Oil & Gas Operator | Feb 2024 |
| 640 | Strike Energy Corporation | Blackwell, OK 74631 | Oil & Gas Operator | Apr 2023 |
| 641 | Strike Energy LLC | Marietta, OK 73448-0365 | Oil Operator | Feb 2024 |
| 642 | Sullivan Jesse G | Duncan, OK 73533 | Oil Operator | May 1998 |
| 643 | Sullivan Nora M | Oklahoma City, OK 73139 | Oil Operator | Jan 1997 |
| 644 | Sullivan Wesley L | Duncan, OK 73533 | Oil & Gas Operator | Mar 2002 |
| 645 | Summa Engineering Inc | Oklahoma City, OK 73112-3624 | Oil & Gas Operator | Mar 2015 |
| 646 | Sun Refining & Marketing | Philadelphia, PA 19103 | Oil & Gas Operator | Jul 2015 |
| 647 | Sunnybook Transmission Inc | Houston, TX 77002 | Oil & Gas Operator | Oct 1992 |
| 648 | Sunoco Partners MKT & Terminal | Tulsa, OK 74102-2039 | Oil & Gas Operator | Jan 2019 |
| 649 | Sunterra Energy Corporation | Tulsa, OK 74103 | Oil & Gas Operator | Dec 2009 |
| 650 | Superior Oil & Gas LLC | Ringwood, OK 73768-9658 | Oil & Gas Operator | Feb 2024 |
| 651 | Superior Saltwater Disposal LLC | | Oil & Gas Operator | Dec 2016 |
| 652 | Sweetwater Exploration LLC | Norman, OK 73069-5636 | Oil & Gas Operator | Jan 2024 |
| 653 | SWN Production LLC | Spring, TX 77389-4954 | Oil & Gas Operator | Feb 2022 |
| 654 | T & B Oil Company Inc | Ardmore, OK 73401-3709 | Oil & Gas Operator | Apr 2015 |
| 655 | T & J Oil Production, L.L.C. | Lone Grove, OK 73443 | Oil & Gas Operator | Feb 2024 |
| 656 | T & S Mud Disposal LLC | Lindsay, OK 73052-0754 | Oil Operator | Mar 2013 |
| 657 | T C Craighead & Company LLC | Ardmore, OK 73402-0576 | Oil & Gas Operator | Aug 2019 |
| 658 | Tag Team Resources LLC | Eufaula, OK 74432-0841 | Oil & Gas Operator | Jan 2024 |
| 659 | Talus Inc | Graham, TX 76450-1210 | Oil & Gas Operator | Feb 2017 |
| 660 | Tapoil Inc | Elmore City, OK 73433-9077 | Oil & Gas Operator | Jul 2021 |
| 661 | Tapstone Energy LLC | Oklahoma City, OK 73101 | Oil & Gas Operator | Feb 2024 |
| 662 | Targa Pipeline Mid-Continent LLC | Sulphur, LA 70665 | Oil & Gas Operator | Jun 2018 |
| 663 | Tat, Inc. | Oklahoma City, OK 73127 | Oil & Gas Operator | Feb 2023 |
| 664 | Tenaska Marketing Ventures | Omaha, NE 68154 | Oil & Gas Operator | Mar 2021 |
| 665 | Tenneco Oil Company | Oklahoma City, OK 73125 | Oil & Gas Operator | Nov 2023 |
| 666 | Teocalli Exploration LLC | | Oil & Gas Operator | Feb 2024 |
| 667 | Terrapet Corporation | | Oil & Gas Operator | Jun 2011 |
| 668 | Territory Resources LLC | Stillwater, OK 74074-1869 | Oil & Gas Operator | Feb 2024 |
| 669 | Tex-Star Production | Dallas, TX 75360-0577 | Oil & Gas Operator | Feb 2024 |
| 670 | Texaco Expl. And Prod. Inc. | Houston, TX 77236 | Oil & Gas Operator | Dec 2023 |
| 671 | Texaco Inc | Kingfisher, OK 73750 | Oil & Gas Operator | Dec 2017 |
| 672 | The Quintin Little Company Inc | Ardmore, OK 73402-1509 | Oil & Gas Operator | Feb 2024 |
| 673 | Thunder Oil & Gas, LLC | Ardmore, OK 73402 | Oil & Gas Operator | Jan 2024 |
| 674 | Tide West Oil Company | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2021 |
| 675 | Tiger Trucks Inc | Seminole, OK 74868 | Oil & Gas Operator | Feb 2024 |
| 676 | Timbercreek Oil Company LLC | Healdton, OK 73438-0446 | Oil Operator | Jan 2024 |
| 677 | Titan Resources LTD | Limaville, OH 44640 | Oil & Gas Operator | Mar 2024 |
| 678 | Tola Production Company | Dallas, TX 75367 | Oil & Gas Operator | Apr 2024 |
| 679 | Tomlinson Oil Co. Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Jun 2023 |
| 680 | Tonys Crude Oil Reclaiming Plant Inc | | Oil Operator | Jan 2024 |
| 681 | Toomey Oil Company Inc | Tulsa, OK 74101-1090 | Oil & Gas Operator | Feb 2024 |
| 682 | Total Minatome Corporation | Houston, TX 77210 | Oil & Gas Operator | Dec 1998 |
| 683 | Total Petroleum Inc | Denver, CO 80201-0500 | Oil & Gas Operator | Nov 2006 |
| 684 | Totalfinaelf E&P USA Inc | Houston, TX 77024 | Oil & Gas Operator | Jul 2007 |
| 685 | Trace Oil & Gas LP | Cement, OK 73017-0563 | Oil & Gas Operator | Feb 2024 |
| 686 | Trail Ridge Energy Partners, LLC | Grapevine, TX 76051 | Oil & Gas Operator | Feb 2024 |
| 687 | Transcontinental Company | Fort Worth, TX 76161-1804 | Oil & Gas Operator | Feb 2024 |
| 688 | Tri Production Inc | Healdton, OK 73438-0177 | Oil & Gas Operator | Jan 2024 |
| 689 | Tri-City Energy Inc | | Oil Operator | Mar 2014 |
| 690 | Triad Of Oklahoma Inc | | Oil & Gas Operator | Feb 1996 |
| 691 | Trineha Inc | Ardmore, OK 73402-2478 | Oil & Gas Operator | Jun 2009 |
| 692 | Trinity Resources, Inc. | Houston, TX 77277 | Oil & Gas Operator | May 2020 |
| 693 | Triple C Properties Inc | Seminole, OK 74818-0481 | Oil & Gas Operator | Jun 2023 |
| 694 | Tripledee Drilling Co Inc | Ardmore, OK 73402-1888 | Oil & Gas Operator | Dec 2015 |
| 695 | Tripledee Operating Company LLC | Ardmore, OK 73402-1888 | Oil & Gas Operator | Nov 2022 |
| 696 | Tripower Resources LLC | Ardmore, OK 73402 | Oil & Gas Operator | Apr 2024 |
| 697 | Tripower Resources, Inc. | Ardmore, OK 73402 | Oil & Gas Operator | Mar 2020 |
| 698 | Trout Disposal Well Inc | Hammon, OK 73650-0292 | Oil & Gas Operator | Jul 2016 |
| 699 | Twin Eagle Petroleum Corp | Tulsa, OK 74136 | Oil & Gas Operator | Jun 2002 |
| 700 | Txo Production Corp. | Ganado, TX 77962 | Oil & Gas Operator | Aug 2022 |