| 701 | Richmond Drilling Company | Midland, TX 79705 | Oil & Gas Operator | Apr 2017 |
| 702 | Rim Operating, Inc. | Englewood, CO 80112 | Oil & Gas Operator | Mar 2025 |
| 703 | Ring Energy, Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2025 |
| 704 | Rio-Tex, Inc. | San Antonio, TX 78217 | Oil & Gas Operator | Mar 2025 |
| 705 | Rising Star Energy, L.L.C. | Dallas, TX 75219 | Oil & Gas Operator | Aug 2006 |
| 706 | Robertson Resources, Inc. | Midland, TX 79708 | Oil & Gas Operator | Mar 2025 |
| 707 | Ronning Gas And Oil LLC | Mesa, AZ 85203 | Oil & Gas Operator | Mar 2025 |
| 708 | Rover Petroleum Operating, LLC | Plano, TX 75075 | Oil & Gas Operator | Mar 2025 |
| 709 | Roy Jackson Energy Operating, LLC | Midland, TX 79701 | Oil & Gas Operator | Mar 2025 |
| 710 | Royale Operating Company | San Diego, CA 92108 | Oil & Gas Operator | Apr 1996 |
| 711 | RSP Permian, LLC | Midland, TX 79701 | Oil & Gas Operator | Jul 2018 |
| 712 | Rusk Co. Well Service Co., Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Mar 2025 |
| 713 | Rust Oil Corp. | Fort Worth, TX 76108 | Oil & Gas Operator | Mar 2025 |
| 714 | Rust Operating Co., Inc. | Fort Worth, TX 76108 | Oil & Gas Operator | Feb 2000 |
| 715 | Rutherford Oil Corporation | Houston, TX 77046 | Oil & Gas Operator | Jun 2019 |
| 716 | Ryann Operating, LLC | Waller, TX 77484 | Oil & Gas Operator | Mar 2025 |
| 717 | S & J Operating Company | Wichita Falls, TX 76301 | Oil & Gas Operator | Mar 2015 |
| 718 | S & M Drilling, LLC | Wichita Falls, TX 76308 | Oil Operator | Sep 2023 |
| 719 | Sabalo II Operating, LLC | Corpus Chrsti, TX 78403 | Oil & Gas Operator | Mar 2025 |
| 720 | Saber Oil & Gas Ventures, LLC | Midland, TX 79701 | Oil & Gas Operator | Mar 2025 |
| 721 | Saber Resources, LLC | Midland, TX 79701 | Oil & Gas Operator | Aug 2008 |
| 722 | Sabinal Energy Operating, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Mar 2025 |
| 723 | Sabine Oil & Gas Corporation | Houston, TX 77002 | Oil & Gas Operator | Mar 2025 |
| 724 | Saddleback Exploration, LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Apr 2024 |
| 725 | Saga Pet. LTD Liability Co Of Co | Midland, TX 79701 | Oil & Gas Operator | Apr 2004 |
| 726 | Saga Petroleum Corp. | Midland, TX 79701 | Oil & Gas Operator | Mar 2008 |
| 727 | Saga Petroleum LLC Of Colorado | Norman, OK 73072 | Oil & Gas Operator | Mar 2025 |
| 728 | Sage Energy Company | San Antonio, TX 78215 | Oil & Gas Operator | Mar 2025 |
| 729 | Saguaro Petroleum, LLC | Midland, TX 79705 | Oil & Gas Operator | Mar 2025 |
| 730 | Sahara Operating Company | Midland, TX 79704 | Oil & Gas Operator | Mar 2025 |
| 731 | Samedan Oil Corporation | Houston, TX 77067 | Oil & Gas Operator | Dec 2019 |
| 732 | Samson Hydrocarbons Company | Tulsa, OK 74103 | Oil & Gas Operator | Nov 2016 |
| 733 | Samson Lone Star LP | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2007 |
| 734 | Samson Lone Star, LLC | Tulsa, OK 74103 | Oil & Gas Operator | Mar 2025 |
| 735 | Samson Resources Company | Tulsa, OK 74103 | Oil & Gas Operator | Dec 2024 |
| 736 | Sanchez-O'Brien Oil & Gas Corp | Houston, TX 77057 | Oil & Gas Operator | May 1998 |
| 737 | Sandridge Exploration And Production LLC | Oklahoma City, OK 73104 | Oil & Gas Operator | Mar 2025 |
| 738 | Santa Fe Energy Resources, Inc. | Houston, TX 77024 | Oil & Gas Operator | Mar 2008 |
| 739 | Santa Fe Exploration Company | Lubbock, TX 79408 | Oil & Gas Operator | Nov 1997 |
| 740 | Santa Fe Snyder Corporation | Houston, TX 77024 | Oil & Gas Operator | Oct 2000 |
| 741 | Sarita Energy Resources, LTD. | Houston, TX 77277 | Oil & Gas Operator | Mar 2025 |
| 742 | Satanta Oil Company | Midland, TX 79704 | Oil & Gas Operator | Mar 2025 |
| 743 | Savannah Ross And Company, LLC | Graham, TX 76450 | Oil & Gas Operator | Mar 2025 |
| 744 | SBJ Energy Partners, L.L.C. | Waco, TX 76710 | Oil & Gas Operator | Mar 2025 |
| 745 | Schlachter Operating Corporation | Dallas, TX 75225 | Oil & Gas Operator | Mar 2025 |
| 746 | Schlachter, David A. | Dallas, TX 75225 | Oil & Gas Operator | Apr 2015 |
| 747 | Schlachter, David A., Estate Of | Dallas, TX 75225 | Oil & Gas Operator | Jan 2000 |
| 748 | Scout Energy Management LLC | Dallas, TX 75240 | Oil & Gas Operator | Mar 2025 |
| 749 | Scythian, LTD. | Midland, TX 79701 | Oil & Gas Operator | Dec 2020 |
| 750 | Seaboard Oil Company | Midland, TX 79710 | Oil & Gas Operator | Mar 2008 |
| 751 | Seaboard Operating Co. | Midland, TX 79710 | Oil & Gas Operator | Mar 2025 |
| 752 | Seay Exploration, Inc. | Midland, TX 79704 | Oil & Gas Operator | Mar 2008 |
| 753 | Segco Oil & Gas Inc | Odessa, TX 79765 | Gas Operator | Oct 2005 |
| 754 | Seguro Oil And Gas, LLC | Midland, TX 79702 | Oil & Gas Operator | Jul 2024 |
| 755 | Shell Trading Us Company | Houston, TX 77210 | Oil & Gas Operator | Dec 2024 |
| 756 | Shell Western E&P Inc. | Houston, TX 77001 | Oil & Gas Operator | May 2011 |
| 757 | Shenandoah Petroleum Corporation | Midland, TX 79705 | Oil & Gas Operator | Mar 2025 |
| 758 | Sheridan Production Company, LLC | Houston, TX 77056 | Oil & Gas Operator | Dec 2024 |
| 759 | Shinnery Oil Company, Inc. | Midland, TX 79701 | Oil & Gas Operator | Mar 2025 |
| 760 | Silver Cross Energy Partners LLC | Richmond, TX 77469 | Oil & Gas Operator | Dec 2024 |
| 761 | Simata Energy | Midland, TX 79708 | Oil & Gas Operator | Mar 2025 |
| 762 | Simata Energy, LLC | Midland, TX 79708 | Oil & Gas Operator | Mar 2025 |
| 763 | Slant Operating, LLC | Lafayette, LA 70503 | Oil & Gas Operator | Mar 2025 |
| 764 | Sloan Petroleum Inc. | Midland, TX 79710 | Oil & Gas Operator | Mar 2025 |
| 765 | SM Energy Company | Midland, TX 79707 | Oil & Gas Operator | Mar 2025 |
| 766 | SMC Oil & Gas, Inc. | Midland, TX 79710 | Oil & Gas Operator | Mar 2025 |
| 767 | Smith & Marrs Inc. | Lubbock, TX 79424 | Oil & Gas Operator | Apr 2021 |
| 768 | Smith Brothers Oil & Gas, Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2025 |
| 769 | Smith Pipe Of Abilene | Abilene, TX 79608 | Oil & Gas Operator | Mar 2025 |
| 770 | Snow Oil & Gas Inc. | Andrews, TX 79714 | Oil & Gas Operator | Mar 2025 |
| 771 | Snow Operating Co., Inc. | Haltom City, TX 76117 | Oil & Gas Operator | Feb 2024 |
| 772 | Sogo III LLC | Midland, TX 79702 | Oil & Gas Operator | Jul 2017 |
| 773 | Sol Oil Co., L.C. | Crane, TX 79731 | Oil Operator | Mar 2025 |
| 774 | Sonat Exploration Co. - Midland | Houston, TX 77251 | Oil & Gas Operator | Mar 1999 |
| 775 | Sonat Exploration Company -Tyler | Houston, TX 77251 | Oil & Gas Operator | Dec 1999 |
| 776 | Southern Bay Operating, L.L.C. | Houston, TX 77002 | Oil & Gas Operator | Jun 2013 |
| 777 | Southern Operating, LLC | Midland, TX 79710 | Oil & Gas Operator | Mar 2025 |
| 778 | Southland Royalty Co.-Midland | Midland, TX 79702 | Oil & Gas Operator | Mar 1996 |
| 779 | Southwest Gas Systems, Inc. | Spring, TX 77379 | Oil & Gas Operator | Mar 2025 |
| 780 | Southwest Royalties Inc | Midland, TX 79710 | Oil & Gas Operator | Mar 2025 |
| 781 | Sozo Natural Resources LLC | Houston, TX 77056 | Oil & Gas Operator | Mar 2025 |
| 782 | Special Energy Corporation | Stillwater, OK 74076 | Oil & Gas Operator | Mar 2025 |
| 783 | Spicewood Operating Company, LLC | Austin, TX 78746 | Oil & Gas Operator | Mar 2025 |
| 784 | Spindletop Oil & Gas Co. | Dallas, TX 75230 | Oil & Gas Operator | Mar 2025 |
| 785 | St. Mary Land & Exploration Co | Denver, CO 80201 | Oil & Gas Operator | Jun 2010 |
| 786 | Stagg Investment Group, Inc. | Midland, TX 79701 | Oil Operator | May 2013 |
| 787 | Staghorn Resources, LLC | Tulsa, OK 74103 | Oil & Gas Operator | Apr 2015 |
| 788 | Stallion Energy, Inc. | Houston, TX 77060 | Oil & Gas Operator | Oct 2017 |
| 789 | Stanolind Operating Corp. | Midland, TX 79701 | Oil & Gas Operator | Apr 2008 |
| 790 | Stanolind Operating LLC | Midland, TX 79702 | Oil & Gas Operator | Apr 2021 |
| 791 | Steller Energy & Investment Corp | Plano, TX 75093 | Oil & Gas Operator | Feb 2021 |
| 792 | Stephens & Johnson Operating Co. | Wichita Falls, TX 76307 | Oil & Gas Operator | Mar 2025 |
| 793 | Stephens, Autry C. | Midland, TX 79701 | Oil & Gas Operator | Mar 2023 |
| 794 | Stickney, F. C., Inc. | Midland, TX 79704 | Oil & Gas Operator | Oct 1998 |
| 795 | Stout Energy Inc. | Midland, TX 79708 | Oil & Gas Operator | Mar 2025 |
| 796 | Stowe Energy, Inc. | Vernon, TX 76384 | Oil & Gas Operator | Mar 2003 |
| 797 | Stratco Operating Co., Inc. | Austin, TX 78701 | Oil & Gas Operator | Mar 2025 |
| 798 | Stronghold Energy II Oper, LLC | Midland, TX 79702 | Oil & Gas Operator | Aug 2022 |
| 799 | Summit Exploration, L.L.C. | Tulsa, OK 74119 | Oil & Gas Operator | Mar 2008 |
| 800 | Summit Petroleum LLC | Midland, TX 79705 | Oil & Gas Operator | Mar 2025 |