| 601 | Royal Oaks Petroleum Corp | Fort Worth, TX 76116 | Oil & Gas Operator | Dec 2001 |
| 602 | RTC Resources, LLP | Weatherford, OK 73096 | Oil & Gas Operator | Apr 2024 |
| 603 | Rush-Andrus Engineering | Royse City, TX 75189 | Oil & Gas Operator | Feb 2022 |
| 604 | S & G Operating LLC | Kingfisher, OK 73750-0256 | Oil & Gas Operator | Feb 2024 |
| 605 | Sabine Oil & Gas Corporation | Houston, TX 77002 | Oil & Gas Operator | Apr 2024 |
| 606 | Sabre Operating, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Apr 2024 |
| 607 | Salty Dog Disposal LLC | | Oil Operator | Mar 2024 |
| 608 | Samedan Oil Corporation | Houston, TX 77067 | Oil & Gas Operator | Dec 2019 |
| 609 | Samson Hydrocarbons Company | Tulsa, OK 74103 | Oil & Gas Operator | Nov 2016 |
| 610 | Samson Resources Company | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2024 |
| 611 | San Marco Petroleum Inc | Denver, CO 80293 | Oil & Gas Operator | Jan 2024 |
| 612 | Sandridge Exploration And Production LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Apr 2024 |
| 613 | Sanguine Gas Exploration, LLC | Tulsa, OK 74119 | Oil & Gas Operator | Apr 2024 |
| 614 | Sanook Inc | Oklahoma City, OK 73156-0548 | Oil & Gas Operator | Jan 2007 |
| 615 | Santa Fe Energy Company | Midland, TX 79701 | Oil & Gas Operator | Dec 2015 |
| 616 | Santa Fe Energy Operating Partner LP | Midland, TX 79701 | Oil & Gas Operator | Sep 2004 |
| 617 | Santa Fe Minerals, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Sep 2013 |
| 618 | Santa Rita Resources Inc & Subs | | Oil & Gas Operator | Mar 2015 |
| 619 | Saylor Weldon W | Tulsa, OK 74105-5325 | Gas Operator | Dec 1994 |
| 620 | Scana Exploration Company | Houston, TX 77002 | Oil & Gas Operator | Dec 1999 |
| 621 | Scana Petroleum Resources Inc | Houston, TX 77002 | Oil & Gas Operator | Jun 2013 |
| 622 | Scana Production Company | Houston, TX 77002 | Oil & Gas Operator | Mar 2005 |
| 623 | Scott Petroleum, Inc. | Dallas, TX 75244 | Oil & Gas Operator | May 1995 |
| 624 | Seagull Energy E & P Inc | Houston, TX 77002 | Oil & Gas Operator | Jan 2015 |
| 625 | Seagull Mid-South Inc | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 626 | Seagull Midcon Inc. | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 627 | Seals And Brown Oil Operating | Norman, OK 73072-3020 | Oil & Gas Operator | Feb 2024 |
| 628 | Seals Oil Company | Fox, OK 73435-0222 | Oil & Gas Operator | Nov 2011 |
| 629 | Search Drilling Company | Houston, TX 77010 | Oil & Gas Operator | Feb 2001 |
| 630 | Semcrude LP | | Oil & Gas Operator | Jul 2008 |
| 631 | Sequent Exploration Inc | | Oil & Gas Operator | Oct 2017 |
| 632 | Sharber Billy Jack Operating | Konawa, OK 74849-0071 | Oil & Gas Operator | Mar 2015 |
| 633 | Shell Western Expl & Prod Inc | Houston, TX 77251 | Oil & Gas Operator | Mar 2015 |
| 634 | Sheridan Production Company, LLC | Houston, TX 77056 | Oil & Gas Operator | Jan 2024 |
| 635 | Shidler, Mark L., Inc. | Houston, TX 77055 | Oil & Gas Operator | Apr 2024 |
| 636 | Shoreline Operating LLC | Oklahoma City, OK 73113 | Oil & Gas Operator | Feb 2024 |
| 637 | Simmons Mack McCoy | Cement, OK 73017-0424 | Oil Operator | Feb 2024 |
| 638 | Skycap Energy, LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | Feb 2024 |
| 639 | Slawson Exploration Company Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Apr 2024 |
| 640 | Slawson, Donald C. | Wichita, KS 67202 | Oil & Gas Operator | Nov 2023 |
| 641 | Sloan Petroleum Service Inc | Edmond, OK 73003-0018 | Oil & Gas Operator | Feb 2024 |
| 642 | SM Energy Company | Midland, TX 79707 | Oil & Gas Operator | Apr 2024 |
| 643 | Snyder Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2015 |
| 644 | Sooner Pipe & Supply Corp | | Oil & Gas Operator | Nov 2004 |
| 645 | Sorrels J R Dba Cheyenne Oil Properties | Ponca City, OK 74602-0067 | Oil & Gas Operator | Jul 2022 |
| 646 | Southwest Energy LP | Houston, TX 77002 | Oil & Gas Operator | Sep 2022 |
| 647 | Sparks Resources Inc | Bristow, OK 74010 | Oil & Gas Operator | Jan 2024 |
| 648 | Spess Oil Company Inc | Cleveland, OK 74020-4617 | Oil & Gas Operator | Feb 2024 |
| 649 | Spindletop Oil & Gas Co. | Dallas, TX 75230 | Oil & Gas Operator | Apr 2024 |
| 650 | Spring Operating Company | Edmond, OK 73083-2048 | Oil & Gas Operator | Feb 2024 |
| 651 | St. Mary Operating Company | Denver, CO 80203 | Oil & Gas Operator | Mar 2019 |
| 652 | Staghorn Petroleum II LLC | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2024 |
| 653 | Stalwart Energy Co | Tulsa, OK 74103-3518 | Oil & Gas Operator | Apr 2014 |
| 654 | Star Oil Company | Wichita, KS 67230 | Oil & Gas Operator | Feb 2024 |
| 655 | Stephens Production Company | The Woodlands, TX 77381 | Oil & Gas Operator | Feb 2024 |
| 656 | Stewart K Petroleum Corp | Edmond, OK 73013 | Oil & Gas Operator | Mar 2015 |
| 657 | Sting Exploration Company | Tulsa, OK 74120 | Oil Operator | Sep 2004 |
| 658 | Strat Land Exploration Company | Tulsa, OK 74103 | Oil & Gas Operator | Jan 2024 |
| 659 | Streamline Oil And Gas Inc | Alex, OK 73002-0117 | Oil & Gas Operator | Mar 2024 |
| 660 | Stricker Resources Inc | Okmulgee, OK 74447-0773 | Oil & Gas Operator | Nov 2023 |
| 661 | Stride Energy LLC | | Oil & Gas Operator | Feb 2024 |
| 662 | Struck Rock Oil And Gas LLC | | Oil & Gas Operator | Jan 2024 |
| 663 | Sun Refining & Marketing | Philadelphia, PA 19103 | Oil & Gas Operator | Jul 2015 |
| 664 | Sundown Energy LP | Dallas, TX 75248 | Oil & Gas Operator | Apr 2024 |
| 665 | Sundown Energy, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Dec 2023 |
| 666 | Sunoco Partners MKT & Terminal | Tulsa, OK 74102-2039 | Oil & Gas Operator | Jan 2019 |
| 667 | Superior Oil & Gas LLC | Ringwood, OK 73768-9658 | Oil & Gas Operator | Feb 2024 |
| 668 | Superior Saltwater Disposal LLC | | Oil & Gas Operator | Dec 2016 |
| 669 | Swan Oil Company | Kellyville, OK 74039-5607 | Oil & Gas Operator | Dec 2023 |
| 670 | Sweetwater Exploration LLC | Norman, OK 73069-5636 | Oil & Gas Operator | Jan 2024 |
| 671 | Swift Energy Company | Houston, TX 77060 | Oil & Gas Operator | Mar 2021 |
| 672 | SWN Production LLC | Spring, TX 77389-4954 | Oil & Gas Operator | Feb 2022 |
| 673 | T & D Oil | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 2024 |
| 674 | T & S Mud Disposal LLC | Lindsay, OK 73052-0754 | Oil Operator | Mar 2013 |
| 675 | T-D Oil Inc | Cement, OK 73017-0065 | Oil & Gas Operator | May 2020 |
| 676 | T-K Exploration Company | Oklahoma City, OK 73102-7029 | Oil & Gas Operator | Mar 2015 |
| 677 | Tack Operating LLC | Oklahoma City, OK 73172-1492 | Oil & Gas Operator | Aug 2021 |
| 678 | Tapstone Energy LLC | Oklahoma City, OK 73101 | Oil & Gas Operator | Feb 2024 |
| 679 | Tarrant Tracy Dba Trace Oil | Crescent, OK 73028-0707 | Oil & Gas Operator | Feb 2021 |
| 680 | Tbi Exploration Inc | Englewood, CO 801556525 | Oil & Gas Operator | Jun 2011 |
| 681 | TD Operating Inc | El Reno, OK 73036-1035 | Oil & Gas Operator | Feb 2024 |
| 682 | Te-Ray Energy, Inc. | Oklahoma City, OK 73108 | Oil & Gas Operator | Jan 2024 |
| 683 | Te-Ray Resources, LLC | Oklahoma City, OK 73142 | Oil & Gas Operator | Apr 2024 |
| 684 | Technical Energy Services, Inc. | Norman, OK 73070 | Oil & Gas Operator | Jan 2024 |
| 685 | Templar Operating LLC | Oklahoma City, OK 73142 | Oil & Gas Operator | Jan 2024 |
| 686 | Tenaska Marketing Ventures | Omaha, NE 68154 | Oil & Gas Operator | Mar 2021 |
| 687 | Tenneco Oil Company | Oklahoma City, OK 73125 | Oil & Gas Operator | Nov 2023 |
| 688 | Teocalli Exploration LLC | | Oil & Gas Operator | Feb 2024 |
| 689 | Territory Resources LLC | Stillwater, OK 74074-1869 | Oil & Gas Operator | Feb 2024 |
| 690 | Tex/Con Oil & Gas Company | Houston, TX 77074 | Oil & Gas Operator | Feb 2001 |
| 691 | Texaco Expl. And Prod. Inc. | Houston, TX 77236 | Oil & Gas Operator | Dec 2023 |
| 692 | Texaco Inc | Kingfisher, OK 73750 | Oil & Gas Operator | Dec 2017 |
| 693 | Texas Mineral Group | Midland, TX 79705 | Oil & Gas Operator | Aug 2013 |
| 694 | Texas Southwest Gas LLC | Tulsa, OK 74121 | Oil & Gas Operator | Oct 2022 |
| 695 | Texinia Oil & Gas Inc. | Dallas, TX 75214 | Oil & Gas Operator | Jan 2024 |
| 696 | Three-N-One | | Oil Operator | Oct 2020 |
| 697 | Tide West Oil Company | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2021 |
| 698 | Tidemark Exploration | Tulsa, OK 74170 | Oil & Gas Operator | May 2005 |
| 699 | Tiger Trucks Inc | Seminole, OK 74868 | Oil & Gas Operator | Feb 2024 |
| 700 | Tonys Crude Oil Reclaiming Plant Inc | | Oil Operator | Jan 2024 |