| 701 | Robson Resources Inc | Tulsa, OK 74104 | Oil & Gas Operator | May 1998 |
| 702 | Rodman Petroleum Corp. | Odessa, TX 79768 | Oil & Gas Operator | Jul 2023 |
| 703 | Rox Exploration Inc | Norman, OK 73069-6301 | Oil & Gas Operator | Oct 2025 |
| 704 | Royalty Energy Development LLC | Edmond, OK 73003 | Oil & Gas Operator | Oct 2025 |
| 705 | RR Oil Well Operations LLC | Ringwood, OK 73768 | Oil & Gas Operator | Oct 2025 |
| 706 | RTC Resources, LLP | Weatherford, OK 73096 | Oil & Gas Operator | Dec 2025 |
| 707 | Rupe Oil Company Inc | Wichita, KS 67278 | Oil & Gas Operator | Jun 2025 |
| 708 | Russell D Meloy Oil & Gas Co | Enid, OK 73703-1623 | Oil & Gas Operator | Oct 2025 |
| 709 | Ryder Scott Oil Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Dec 2005 |
| 710 | S & G Operating LLC | McLoud, OK 74851 | Oil & Gas Operator | Oct 2025 |
| 711 | S/H Petroleum Corporation | Hennessey, OK 73742-0477 | Oil & Gas Operator | Feb 2016 |
| 712 | Sabre Operating, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 2025 |
| 713 | Samson Hydrocarbons Company | Tulsa, OK 74103 | Oil & Gas Operator | Nov 2016 |
| 714 | Samson Resources Company | Tulsa, OK 74103 | Oil & Gas Operator | Oct 2025 |
| 715 | Sand Point Production Inc | Oklahoma City, OK 73172 | Oil & Gas Operator | Oct 2025 |
| 716 | Sandridge Energy, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | May 2018 |
| 717 | Sandridge Exploration And Production LLC | Oklahoma City, OK 73104 | Oil & Gas Operator | Dec 2025 |
| 718 | Sanguine Gas Exploration, LLC | Tulsa, OK 74119 | Oil & Gas Operator | Dec 2025 |
| 719 | Sanook Inc | Oklahoma City, OK 73156-0548 | Oil & Gas Operator | Jan 2007 |
| 720 | Santa Fe Minerals, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Sep 2013 |
| 721 | Santo Resources Inc | Oklahoma City, OK 73154 | Oil & Gas Operator | Nov 1998 |
| 722 | Scana Exploration Company | Houston, TX 77002 | Oil & Gas Operator | Dec 1999 |
| 723 | Scana Petroleum Resources Inc | Houston, TX 77002 | Oil & Gas Operator | Jun 2013 |
| 724 | Scana Production Company | Houston, TX 77002 | Oil & Gas Operator | Mar 2005 |
| 725 | Scoggins Production Company | Cleo Springs, OK 73729-9732 | Oil & Gas Operator | May 2022 |
| 726 | Scoggins Production LLC | Enid, OK 73703-3002 | Oil & Gas Operator | Oct 2025 |
| 727 | Seagull Energy E & P Inc | Houston, TX 77002 | Oil & Gas Operator | Jan 2015 |
| 728 | Seagull Mid-South Inc | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 729 | Seagull Midcon Inc. | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 730 | Seals And Brown Oil Operating | Norman, OK 73072-3020 | Oil & Gas Operator | Sep 2024 |
| 731 | Seals Oil Company | Fox, OK 73435-0222 | Oil & Gas Operator | Nov 2011 |
| 732 | Seaport Inc | Oklahoma City, OK 73131 | Oil & Gas Operator | Oct 2025 |
| 733 | Sears M N | Oklahoma City, OK 73143 | Oil & Gas Operator | Apr 2015 |
| 734 | Seely Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2025 |
| 735 | Seneca Oil Company | Tulsa, OK 74121-1518 | Oil & Gas Operator | Jan 2015 |
| 736 | Sensor Oil & Gas, Inc. | Duncan, OK 73534 | Oil & Gas Operator | May 2013 |
| 737 | Sentinel Petroleum Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Feb 2020 |
| 738 | Settlers Energy Corporation | Oklahoma City, OK 73113 | Oil & Gas Operator | Apr 1998 |
| 739 | Seven Horses LLC | Alva, OK 73717-5004 | Oil & Gas Operator | Oct 2025 |
| 740 | Shale Properties LLC | Kingfisher, OK 73750 | Oil Operator | Aug 2023 |
| 741 | Shanks Drilling & Production Company LLC | Bixby, OK 74008 | Oil & Gas Operator | Aug 2025 |
| 742 | Shar Alan Oil Company | | Oil & Gas Operator | Oct 2005 |
| 743 | Shell Western Expl & Prod Inc | Houston, TX 77251 | Oil & Gas Operator | Mar 2015 |
| 744 | Shelly Energy Inc | Berwyn, PA 19312 | Oil & Gas Operator | Oct 2025 |
| 745 | Sheridan Production Company, LLC | Houston, TX 77056 | Oil & Gas Operator | Oct 2025 |
| 746 | Sho-Bar Energy Inc | Harper, KS 67058 | Oil & Gas Operator | Sep 2025 |
| 747 | Silver Creek Oil & Gas, LLC | Flower Mound, TX 75022 | Oil & Gas Operator | Dec 2025 |
| 748 | Silver Pines Energy Corp. | Houston, TX 77005 | Oil & Gas Operator | Sep 2025 |
| 749 | Singer Oil Co LLC | Hennessey, OK 73742 | Oil & Gas Operator | Oct 2025 |
| 750 | Singer-Fleischaker Oil Op Co | Oklahoma City, OK 73102 | Oil & Gas Operator | Apr 2002 |
| 751 | Siosi Oil & Gas Company | Tulsa, OK 74170 | Oil & Gas Operator | Nov 2013 |
| 752 | Skycap Energy, LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | Oct 2025 |
| 753 | Sloan Petroleum Service Inc | Guthrie, OK 73044 | Oil & Gas Operator | Oct 2025 |
| 754 | Smith C W & Associates Inc | Oklahoma City, OK 73178-0105 | Oil & Gas Operator | Aug 2013 |
| 755 | Snuffy'S Oilfield Service Inc | Hennessey, OK 73742-6511 | Oil & Gas Operator | Nov 2014 |
| 756 | Snyder Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2015 |
| 757 | Sooner Exploration & Development Co Inc | Enid, OK 73702-3525 | Oil & Gas Operator | Oct 2023 |
| 758 | Sooner Oilfield Services Inc | Piedmont, OK 73078-0810 | Oil & Gas Operator | May 2024 |
| 759 | Southern Resources Inc | Oklahoma City, OK 73118-4821 | Oil & Gas Operator | Oct 2025 |
| 760 | Southland Royalty Company | Houston, TX 77210 | Oil & Gas Operator | Sep 2011 |
| 761 | Southwest Energy Development Inc | Bison, OK 73720 | Oil & Gas Operator | Oct 2025 |
| 762 | Southwest Exploration Company | Oklahoma City, OK 73132-2230 | Oil & Gas Operator | Jun 2017 |
| 763 | Southwest Royalties, Inc. | Midland, TX 79710 | Oil & Gas Operator | Dec 2025 |
| 764 | Southwestern Exploration Consultants Inc | Oklahoma City, OK 73118-1116 | Oil & Gas Operator | Oct 2025 |
| 765 | Sparks Petroleum Company | Oklahoma City, OK 73128 | Oil & Gas Operator | Mar 1998 |
| 766 | Sparks Resources Inc | Bristow, OK 74010 | Oil & Gas Operator | Oct 2025 |
| 767 | Special Energy Corp. | Stillwater, OK 74076 | Oil & Gas Operator | Dec 2025 |
| 768 | Spess Oil Company Inc | Cleveland, OK 74020-4617 | Oil & Gas Operator | Oct 2025 |
| 769 | Spindletop Oil & Gas Co. | Dallas, TX 75230 | Oil & Gas Operator | Dec 2025 |
| 770 | Spire Asset Management LLC | Lafayette, CO 80026 | Oil & Gas Operator | Oct 2025 |
| 771 | Splawn & Splawn | Saint Louis, OK 74866-0098 | Oil & Gas Operator | Mar 2025 |
| 772 | Sportsman Oil, Inc. | Dallas, TX 75379 | Oil & Gas Operator | Nov 1998 |
| 773 | Spring Operating Company | Edmond, OK 73034 | Oil & Gas Operator | Oct 2025 |
| 774 | Spring Valley Oil & Gas Inc | Drummond, OK 73735 | Oil & Gas Operator | Oct 2025 |
| 775 | St Johns Operating #1 LP | Houston, TX 77060 | Oil & Gas Operator | Aug 2023 |
| 776 | St. Mary Operating Company | Denver, CO 80203 | Oil & Gas Operator | Mar 2019 |
| 777 | Staghorn Energy, LLC | Tulsa, OK 74103 | Oil & Gas Operator | Oct 2025 |
| 778 | Staghorn Petroleum II LLC | Tulsa, OK 74103-3500 | Oil & Gas Operator | Oct 2025 |
| 779 | Staghorn Petroleum LLC | Tulsa, OK 74103-3500 | Oil & Gas Operator | Oct 2025 |
| 780 | Stanton Leo F & Leo H | Wynona, OK 74084 | Oil & Gas Operator | Jun 1999 |
| 781 | Stephens Exploration, Inc. | Dallas, TX 75367 | Oil & Gas Operator | Oct 2025 |
| 782 | Stephens Production Company | The Woodlands, TX 77381 | Oil & Gas Operator | Oct 2025 |
| 783 | Stewart K Petroleum Corp | Edmond, OK 73013 | Oil & Gas Operator | Mar 2015 |
| 784 | Still Alex B Estate Of | Sagle, ID 83860-0644 | Oil & Gas Operator | Nov 2018 |
| 785 | Stone Oak Operating LLC | Oklahoma City, OK 73120 | Oil & Gas Operator | Oct 2025 |
| 786 | Stone River Energy Corp | Edmond, OK 73034 | Oil & Gas Operator | Jan 2014 |
| 787 | Strat Land Exploration Company | Tulsa, OK 74103 | Oil & Gas Operator | Oct 2025 |
| 788 | Stride Energy LLC | Piedmont, OK 73078 | Oil & Gas Operator | Oct 2025 |
| 789 | Struck Rock Oil And Gas LLC | Geary, OK 73040 | Oil & Gas Operator | Sep 2025 |
| 790 | Sunterra Energy Corporation | Tulsa, OK 74103 | Oil & Gas Operator | Dec 2009 |
| 791 | Superior Midstream, LLC | Tulsa, OK 74170 | Oil & Gas Operator | Feb 2020 |
| 792 | Superior Oil & Gas LLC | Ringwood, OK 73768-9658 | Oil & Gas Operator | Oct 2025 |
| 793 | Superior Production LLC | Ringwood, OK 73768 | Oil & Gas Operator | Oct 2025 |
| 794 | Swan Oil Co | Kellyville, OK 74039-5607 | Oil & Gas Operator | Dec 2023 |
| 795 | Sweetwater Exploration LLC | Norman, OK 73069-5636 | Oil & Gas Operator | Oct 2025 |
| 796 | SWN Production LLC | Spring, TX 77389-4954 | Oil & Gas Operator | Feb 2022 |
| 797 | Sylvan Oil Operating Company | Tulsa, OK 74103-3516 | Oil & Gas Operator | Apr 2016 |
| 798 | T Bar M Energy Resources LLC | Mounds, OK 74047 | Oil & Gas Operator | Sep 2025 |
| 799 | T C Craighead & Company LLC | Ardmore, OK 73401 | Oil & Gas Operator | Aug 2019 |
| 800 | T Investments Inc | Oklahoma City, OK 73118-1401 | Oil & Gas Operator | Mar 2011 |