| 701 | Ryder Scott Oil Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Dec 2005 |
| 702 | S & G Operating LLC | McLoud, OK 74851 | Oil & Gas Operator | Apr 2025 |
| 703 | S/H Petroleum Corporation | Hennessey, OK 73742-0477 | Oil & Gas Operator | Feb 2016 |
| 704 | Sabre Operating, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Jul 2025 |
| 705 | Samson Hydrocarbons Company | Tulsa, OK 74103 | Oil & Gas Operator | Nov 2016 |
| 706 | Samson Oil Company | | Oil & Gas Operator | Feb 2001 |
| 707 | Samson Resources Company | Tulsa, OK 74103 | Oil & Gas Operator | Apr 2025 |
| 708 | Sand Point Production Inc | Oklahoma City, OK 73172 | Oil & Gas Operator | Apr 2025 |
| 709 | Sandridge Energy, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | May 2018 |
| 710 | Sandridge Exploration And Production LLC | Oklahoma City, OK 73104 | Oil & Gas Operator | Jul 2025 |
| 711 | Sanguine Gas Exploration, LLC | Tulsa, OK 74119 | Oil & Gas Operator | Jul 2025 |
| 712 | Sanook Inc | Oklahoma City, OK 73156-0548 | Oil & Gas Operator | Jan 2007 |
| 713 | Santa Fe Minerals, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Sep 2013 |
| 714 | Santo Resources Inc | Oklahoma City, OK 73154 | Oil & Gas Operator | Nov 1998 |
| 715 | Scana Exploration Company | Houston, TX 77002 | Oil & Gas Operator | Dec 1999 |
| 716 | Scana Petroleum Resources Inc | Houston, TX 77002 | Oil & Gas Operator | Jun 2013 |
| 717 | Scana Production Company | Houston, TX 77002 | Oil & Gas Operator | Mar 2005 |
| 718 | Scoggins Production Company | Cleo Springs, OK 73729-9732 | Oil & Gas Operator | May 2022 |
| 719 | Scoggins Production LLC | Enid, OK 73703-3002 | Oil & Gas Operator | May 2025 |
| 720 | Seagull Energy E & P Inc | Houston, TX 77002 | Oil & Gas Operator | Jan 2015 |
| 721 | Seagull Mid-South Inc | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 722 | Seagull Midcon Inc. | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 723 | Seals And Brown Oil Operating | Norman, OK 73072-3020 | Oil & Gas Operator | Sep 2024 |
| 724 | Seals Oil Company | Fox, OK 73435-0222 | Oil & Gas Operator | Nov 2011 |
| 725 | Seaport Inc | Oklahoma City, OK 73131 | Oil & Gas Operator | Apr 2025 |
| 726 | Sears M N | Oklahoma City, OK 73143 | Oil & Gas Operator | Apr 2015 |
| 727 | Seely Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Jul 2025 |
| 728 | Seneca Oil Company | Tulsa, OK 74121-1518 | Oil & Gas Operator | Jan 2015 |
| 729 | Sensor Oil & Gas Inc | Duncan, OK 73534 | Oil & Gas Operator | May 2013 |
| 730 | Sentinel Petroleum Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Feb 2020 |
| 731 | Settlers Energy Corporation | Oklahoma City, OK 73113 | Oil & Gas Operator | Apr 1998 |
| 732 | Seven Horses LLC | Alva, OK 73717-5004 | Oil & Gas Operator | May 2025 |
| 733 | Shale Properties LLC | Kingfisher, OK 73750 | Oil Operator | Aug 2023 |
| 734 | Shanks Drilling & Production Company LLC | Bixby, OK 74008 | Oil & Gas Operator | Jan 2025 |
| 735 | Shar Alan Oil Company | | Oil & Gas Operator | Oct 2005 |
| 736 | Shell Oil Company | Houston, TX 77210 | Oil & Gas Operator | Apr 2015 |
| 737 | Shell Western Expl & Prod Inc | Houston, TX 77251 | Oil & Gas Operator | Mar 2015 |
| 738 | Shelly Energy Inc. | Berwyn, PA 19312 | Oil & Gas Operator | May 2025 |
| 739 | Sheridan Production Company, LLC | Houston, TX 77056 | Oil & Gas Operator | Apr 2025 |
| 740 | Sho-Bar Energy, Inc. | Harper, KS 67058 | Oil & Gas Operator | Apr 2025 |
| 741 | Silver Creek Oil & Gas, LLC | Flower Mound, TX 75022 | Oil & Gas Operator | Jul 2025 |
| 742 | Silver Pines Energy Corp. | Houston, TX 77005 | Oil & Gas Operator | Apr 2025 |
| 743 | Singer Fleischaker Oil Op. Co. | Oklahoma City, OK 73102 | Oil & Gas Operator | Apr 2002 |
| 744 | Singer Oil Co LLC | Hennessey, OK 73742 | Oil & Gas Operator | May 2025 |
| 745 | Siosi Oil & Gas Company | Tulsa, OK 74170 | Oil & Gas Operator | Nov 2013 |
| 746 | Skycap Energy, LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | May 2025 |
| 747 | Sloan Petroleum Service Inc | Guthrie, OK 73044 | Oil & Gas Operator | May 2025 |
| 748 | Smith C W & Associates Inc | Oklahoma City, OK 73178-0105 | Oil & Gas Operator | Aug 2013 |
| 749 | Snuffy'S Oilfield Service Inc | Hennessey, OK 73742-6511 | Oil & Gas Operator | Nov 2014 |
| 750 | Snyder Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2015 |
| 751 | Sooner Exploration & Development Co Inc | Enid, OK 73702-3525 | Oil & Gas Operator | Oct 2023 |
| 752 | Sooner Oilfield Services Inc | Piedmont, OK 73078-0810 | Oil & Gas Operator | May 2024 |
| 753 | Southern Resources Inc | Oklahoma City, OK 73118-4821 | Oil & Gas Operator | May 2025 |
| 754 | Southland Royalty Company | Houston, TX 77210 | Oil & Gas Operator | Sep 2011 |
| 755 | Southwest Energy Development Inc | Bison, OK 73720 | Oil & Gas Operator | Apr 2025 |
| 756 | Southwest Exploration Company | Oklahoma City, OK 73132-2230 | Oil & Gas Operator | Jun 2017 |
| 757 | Southwest Royalties Inc | Midland, TX 79710 | Oil & Gas Operator | Jul 2025 |
| 758 | Southwestern Exploration Consultants Inc | Oklahoma City, OK 73118-1116 | Oil & Gas Operator | Apr 2025 |
| 759 | Sparks Petroleum Company | Oklahoma City, OK 73128 | Oil & Gas Operator | Mar 1998 |
| 760 | Sparks Resources Inc | Bristow, OK 74010 | Oil & Gas Operator | May 2025 |
| 761 | Special Energy Corporation | Stillwater, OK 74076 | Oil & Gas Operator | Jul 2025 |
| 762 | Spess Oil Company Inc | Cleveland, OK 74020-4617 | Oil & Gas Operator | May 2025 |
| 763 | Spindletop Oil & Gas Co. | Dallas, TX 75230 | Oil & Gas Operator | Jul 2025 |
| 764 | Spire Asset Management LLC | Lafayette, CO 80026 | Oil & Gas Operator | Apr 2025 |
| 765 | Splawn & Splawn | Saint Louis, OK 74866-0098 | Oil & Gas Operator | Mar 2025 |
| 766 | Sportsman Oil, Inc. | Dallas, TX 75379 | Oil & Gas Operator | Nov 1998 |
| 767 | Spring Operating Company | Edmond, OK 73034 | Oil & Gas Operator | May 2025 |
| 768 | Spring Valley Oil & Gas Inc | Drummond, OK 73735 | Oil & Gas Operator | May 2025 |
| 769 | St. Johns Operating #1 L.P. | Houston, TX 77060 | Oil & Gas Operator | Aug 2023 |
| 770 | St. Mary Operating Company | Denver, CO 80203 | Oil & Gas Operator | Mar 2019 |
| 771 | Staghorn Energy, LLC | Tulsa, OK 74103 | Oil & Gas Operator | Apr 2025 |
| 772 | Staghorn Petroleum II LLC | Tulsa, OK 74103-3500 | Oil & Gas Operator | May 2025 |
| 773 | Staghorn Petroleum LLC | Tulsa, OK 74103-3500 | Oil & Gas Operator | Apr 2025 |
| 774 | Stanton Leo F & Leo H | Wynona, OK 74084 | Oil & Gas Operator | Jun 1999 |
| 775 | Stephens Exploration, Inc. | Dallas, TX 75367 | Oil & Gas Operator | May 2025 |
| 776 | Stephens Production Company | The Woodlands, TX 77381 | Oil & Gas Operator | May 2025 |
| 777 | Stewart K Petroleum Corp | Edmond, OK 73013 | Oil & Gas Operator | Mar 2015 |
| 778 | Still Alex B Estate Of | Sagle, ID 83860-0644 | Oil & Gas Operator | Nov 2018 |
| 779 | Stone Oak Operating LLC | Oklahoma City, OK 73120 | Oil & Gas Operator | Apr 2025 |
| 780 | Stone River Energy Corp | Edmond, OK 73034 | Oil & Gas Operator | Jan 2014 |
| 781 | Strat Land Exploration Company | Tulsa, OK 74103 | Oil & Gas Operator | Apr 2025 |
| 782 | Stride Energy LLC | Piedmont, OK 73078 | Oil & Gas Operator | May 2025 |
| 783 | Struck Rock Oil And Gas LLC | Geary, OK 73040 | Oil & Gas Operator | Apr 2025 |
| 784 | Sunterra Energy Corporation | Tulsa, OK 74103 | Oil & Gas Operator | Dec 2009 |
| 785 | Superior Midstream, LLC | Tulsa, OK 74170 | Oil & Gas Operator | Feb 2020 |
| 786 | Superior Oil & Gas LLC | Ringwood, OK 73768-9658 | Oil & Gas Operator | May 2025 |
| 787 | Superior Production LLC | Ringwood, OK 73768 | Oil & Gas Operator | May 2025 |
| 788 | Swan Oil Co | Kellyville, OK 74039-5607 | Oil & Gas Operator | Dec 2023 |
| 789 | Sweetwater Exploration LLC | Norman, OK 73069-5636 | Oil & Gas Operator | Apr 2025 |
| 790 | SWN Production LLC | Spring, TX 77389-4954 | Oil & Gas Operator | Feb 2022 |
| 791 | Sylvan Oil Operating Company | Tulsa, OK 74103-3516 | Oil & Gas Operator | Apr 2016 |
| 792 | T Bar M Energy Resources LLC | Mounds, OK 74047 | Oil & Gas Operator | Apr 2025 |
| 793 | T C Craighead & Company LLC | Ardmore, OK 73401 | Oil & Gas Operator | Aug 2019 |
| 794 | T Investments Inc | Oklahoma City, OK 73118-1401 | Oil & Gas Operator | Mar 2011 |
| 795 | T2 Operating Corporation | Denver, CO 80202 | Oil & Gas Operator | Jul 2025 |
| 796 | Tack Operating LLC | Oklahoma City, OK 73172-1492 | Oil & Gas Operator | Aug 2021 |
| 797 | Tapoil Inc | Elmore City, OK 73433-9077 | Oil & Gas Operator | Jul 2021 |
| 798 | Tapstone Energy LLC | Oklahoma City, OK 73101 | Oil & Gas Operator | May 2025 |
| 799 | Taylor R C Companies Inc | Oklahoma City, OK 73118-4015 | Oil & Gas Operator | May 2021 |
| 800 | TD Operating Inc | Hinton, OK 73047 | Oil & Gas Operator | May 2025 |