| 701 | Ricks Expl Acquisition LLC | Midland, TX 79701 | Oil & Gas Operator | Aug 2013 |
| 702 | Ricks Exploration Co | Oklahoma City, OK 73112 | Oil & Gas Operator | Mar 2015 |
| 703 | Rife Oil Properties Inc | Fort Worth, TX 76107 | Oil & Gas Operator | Apr 2026 |
| 704 | Rio Blanco Operating LLC | Victoria, TX 77904 | Oil & Gas Operator | Jan 2026 |
| 705 | Riviera Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | Feb 2026 |
| 706 | RKK Production Company | Mustang, OK 73064 | Oil & Gas Operator | Feb 2026 |
| 707 | Roan Resources LLC | Tulsa, OK 74103-3729 | Oil & Gas Operator | Apr 2024 |
| 708 | Robinowitz Oil Company | Tulsa, OK 74136-1429 | Oil & Gas Operator | Feb 2023 |
| 709 | Rocky Roads Operating LLC | Tulsa, OK 74103-4048 | Oil & Gas Operator | Feb 2026 |
| 710 | Rodman Petroleum Corp. | Odessa, TX 79768 | Oil & Gas Operator | Jul 2023 |
| 711 | Roka Resources Inc | Oklahoma City, OK 73139 | Oil & Gas Operator | Jan 2026 |
| 712 | Ronan Company | Springfield, MO 65704 | Oil & Gas Operator | Aug 2013 |
| 713 | Rose Petroleum Corp | Oklahoma City, OK 73146 | Oil & Gas Operator | Feb 2015 |
| 714 | Ross Curtis | Ada, OK 74820-1354 | Oil & Gas Operator | Feb 2012 |
| 715 | Rowe Stephen Oil Properties LLC | Hunt, TX 78024 | Oil & Gas Operator | Apr 2020 |
| 716 | Rox Exploration Inc | Norman, OK 73069-6301 | Oil & Gas Operator | Feb 2026 |
| 717 | Royalty Energy Development LLC | Edmond, OK 73003 | Oil & Gas Operator | Feb 2026 |
| 718 | RR Oil Well Operations LLC | Ringwood, OK 73768 | Oil & Gas Operator | Feb 2026 |
| 719 | RTC Resources, LLP | Weatherford, OK 73096 | Oil & Gas Operator | Apr 2026 |
| 720 | Russell D Meloy Oil & Gas Co | Enid, OK 73703-1623 | Oil & Gas Operator | Feb 2026 |
| 721 | Ryan Petroleum Corp | Oklahoma City, OK 73102-9024 | Oil & Gas Operator | Aug 1994 |
| 722 | S & G Operating LLC | McLoud, OK 74851 | Oil & Gas Operator | Feb 2026 |
| 723 | S & J Operating Company | Wichita Falls, TX 76301 | Oil & Gas Operator | Mar 2015 |
| 724 | S & S Star Operating, LLC | Oklahoma City, OK 73101 | Oil & Gas Operator | Mar 2026 |
| 725 | S/H Petroleum Corporation | Hennessey, OK 73742-0477 | Oil & Gas Operator | Feb 2016 |
| 726 | Sabre Operating, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Apr 2026 |
| 727 | Samson Hydrocarbons Company | Tulsa, OK 74103 | Oil & Gas Operator | Nov 2016 |
| 728 | Samson Resources Company | Tulsa, OK 74103 | Oil & Gas Operator | Jan 2026 |
| 729 | Sananco Energy Corp | Naples, FL 33941 | Oil & Gas Operator | Jul 2013 |
| 730 | Sandra Turner Dba Grand Lake Resources | Hennessey, OK 73742 | Oil & Gas Operator | Feb 2026 |
| 731 | Sandridge Energy, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | May 2018 |
| 732 | Sandridge Exploration And Production LLC | Oklahoma City, OK 73104 | Oil & Gas Operator | Apr 2026 |
| 733 | Sanook Inc | Oklahoma City, OK 73156-0548 | Oil & Gas Operator | Jan 2007 |
| 734 | Santa Fe Minerals, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Sep 2013 |
| 735 | Santa Fe-Andover Oil Co | Tulsa, OK 74172 | Oil & Gas Operator | Sep 2000 |
| 736 | Scana Petroleum Resources Inc | Houston, TX 77002 | Oil & Gas Operator | Jun 2013 |
| 737 | Scana Production Company | Houston, TX 77002 | Oil & Gas Operator | Mar 2005 |
| 738 | Scout Energy Corporation | Edmond, OK 73083-1348 | Oil & Gas Operator | Jan 2026 |
| 739 | Seagull Energy E & P Inc | Houston, TX 77002 | Oil & Gas Operator | Jan 2015 |
| 740 | Seagull Mid-South Inc | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 741 | Seagull Midcon Inc. | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 742 | Seahawk Oil International Inc | Newport Beach, CA 92660 | Oil & Gas Operator | Oct 1997 |
| 743 | Seals And Brown Oil Operating | Norman, OK 73072-3020 | Oil & Gas Operator | Sep 2024 |
| 744 | Seaport Inc | Oklahoma City, OK 73131 | Oil & Gas Operator | Jan 2026 |
| 745 | Search Drilling Company | Houston, TX 77010 | Oil & Gas Operator | Feb 2001 |
| 746 | Sears Joe M | Bethany, OK 730084841 | Oil & Gas Operator | May 2013 |
| 747 | Sears M N | Oklahoma City, OK 73143 | Oil & Gas Operator | Apr 2015 |
| 748 | Seely Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2026 |
| 749 | Sensor Oil & Gas, Inc. | Duncan, OK 73534 | Oil & Gas Operator | May 2013 |
| 750 | Sentinel Petroleum Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Feb 2020 |
| 751 | Seven J Oil Inc | Jenning, OK 74038-9729 | Oil & Gas Operator | Sep 2025 |
| 752 | Shar Alan Oil Company | | Oil & Gas Operator | Oct 2005 |
| 753 | Shaver Tommy L | Kingfisher, OK 73750-9612 | Oil & Gas Operator | Apr 2015 |
| 754 | Shaw Thomas P | Tulsa, OK 74105-7327 | Oil & Gas Operator | Mar 2015 |
| 755 | Shell Oil Company | Houston, TX 77210 | Oil & Gas Operator | Apr 2015 |
| 756 | Shelly Energy Inc | Berwyn, PA 19312 | Oil & Gas Operator | Feb 2026 |
| 757 | Shoreline Operating LLC | Oklahoma City, OK 73113 | Oil & Gas Operator | Feb 2026 |
| 758 | Sidwell Oil & Gas, Inc. | Amarillo, TX 79105 | Oil & Gas Operator | Sep 2014 |
| 759 | Silver Creek Oil & Gas, LLC | Flower Mound, TX 75022 | Oil & Gas Operator | Apr 2026 |
| 760 | Silver Star Of Nevada Inc | Oklahoma City, OK 73134 | Oil & Gas Operator | Jan 2026 |
| 761 | Silver Star Production Co | Moore, OK 73160-6202 | Oil & Gas Operator | Dec 2025 |
| 762 | Simcoe Oil Company | Scottsdale, AZ 85258-2553 | Oil & Gas Operator | May 2020 |
| 763 | Singer Oil Co LLC | Hennessey, OK 73742 | Oil & Gas Operator | Feb 2026 |
| 764 | Singer Oil Company | Oklahoma City, OK 73148 | Oil & Gas Operator | Jan 2026 |
| 765 | Sitco Inc | Yukon, OK 73099 | Oil & Gas Operator | Jul 1995 |
| 766 | SK Nemaha LLC | Houston, TX 77079-1222 | Oil & Gas Operator | Feb 2021 |
| 767 | Skycap Energy, LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | Feb 2026 |
| 768 | Sloan Oil Corporation | Humble, TX 77347 | Oil & Gas Operator | Mar 2015 |
| 769 | SM Energy Company | Midland, TX 79707 | Oil & Gas Operator | Apr 2026 |
| 770 | Smith Mike D | Stillwater, OK 74074 | Oil & Gas Operator | Apr 2015 |
| 771 | Snelgrooes Oil Company Inc | Maysville, OK 73057-0631 | Oil & Gas Operator | Nov 2014 |
| 772 | Snyder Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2015 |
| 773 | Sooner Crude Inc | Tulsa, OK 74136-9107 | Oil & Gas Operator | Sep 2008 |
| 774 | Sooner Exploration & Development Co Inc | Enid, OK 73702-3525 | Oil & Gas Operator | Oct 2023 |
| 775 | Sooner Oil & Gas LLC | Fairview, OK 73737-1806 | Oil & Gas Operator | Feb 2026 |
| 776 | Sooner Oilfield Services Inc | Piedmont, OK 73078-0810 | Oil & Gas Operator | May 2024 |
| 777 | Sooner Trend Exploration Inc | Kingfisher, OK 73750-4752 | Oil & Gas Operator | Dec 2015 |
| 778 | South Forty Inc (The) | Laverne, OK 73848 | Oil & Gas Operator | Mar 2015 |
| 779 | Southern Resources Inc | Oklahoma City, OK 73118-4821 | Oil & Gas Operator | Jan 2026 |
| 780 | Southwest Royalties, Inc. | Midland, TX 79710 | Oil & Gas Operator | Apr 2026 |
| 781 | Southwestern Exploration Consultants Inc | Oklahoma City, OK 73118-1116 | Oil & Gas Operator | Feb 2026 |
| 782 | Sparks Petroleum Company | Oklahoma City, OK 73128 | Oil & Gas Operator | Mar 1998 |
| 783 | Special Energy Corp. | Stillwater, OK 74076 | Oil & Gas Operator | Apr 2026 |
| 784 | Speller Oil Corporation | Oklahoma City, OK 73112 | Oil & Gas Operator | Feb 2026 |
| 785 | Spess Oil Company Inc | Cleveland, OK 74020-4617 | Oil & Gas Operator | Feb 2026 |
| 786 | Spring Operating Company | Edmond, OK 73034 | Oil & Gas Operator | Feb 2026 |
| 787 | Spring Valley Oil & Gas Inc | Drummond, OK 73735 | Oil & Gas Operator | Feb 2026 |
| 788 | St Johns Operating #1 LP | Houston, TX 77060 | Oil & Gas Operator | Aug 2023 |
| 789 | St. Mary Operating Company | Denver, CO 80203 | Oil & Gas Operator | Mar 2019 |
| 790 | Staghorn Energy, LLC | Tulsa, OK 74103 | Oil & Gas Operator | Jan 2026 |
| 791 | Staghorn Petroleum II LLC | Tulsa, OK 74103-3500 | Oil & Gas Operator | Feb 2026 |
| 792 | Staghorn Petroleum LLC | Tulsa, OK 74103-3500 | Oil & Gas Operator | Jan 2026 |
| 793 | Staghorn Resources, LLC | Tulsa, OK 74103 | Oil & Gas Operator | Apr 2015 |
| 794 | Stephens & Johnson Operating Co. | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 2026 |
| 795 | Stephens Exploration, Inc. | Dallas, TX 75367 | Oil & Gas Operator | Feb 2026 |
| 796 | Stephens Production Company | The Woodlands, TX 77381 | Oil & Gas Operator | Feb 2026 |
| 797 | Stone Creek Operating, LLC | Oklahoma City, OK 73142 | Oil & Gas Operator | Apr 2026 |
| 798 | Stone River Energy Corp | Edmond, OK 73034 | Oil & Gas Operator | Jan 2014 |
| 799 | Stoneriver Energy, LLC | Lubbock, TX 79424 | Oil & Gas Operator | Apr 2026 |
| 800 | Stride Energy LLC | Piedmont, OK 73078 | Oil & Gas Operator | Feb 2026 |