| 10501 | Sproul, C. R. Inc. | Eldorado, TX 76936 | Oil & Gas Operator | Aug 2000 |
| 10502 | Spruiell Drilling Co., Inc. | Holliday, TX 76366 | Oil & Gas Operator | Apr 2025 |
| 10503 | Spur Energy | Midland, TX 79708 | Oil & Gas Operator | Mar 1996 |
| 10504 | Spur Operating Co. | Austin, TX 78701 | Oil & Gas Operator | Apr 2025 |
| 10505 | Square Mile Energy, L.L.C. | Houston, TX 77057 | Oil & Gas Operator | Apr 2025 |
| 10506 | Square One Corporation | Giddings, TX 78942 | Oil & Gas Operator | Dec 2012 |
| 10507 | Square One Energy, Inc. | Tulsa, OK 74159 | Oil & Gas Operator | Oct 2015 |
| 10508 | Squaw Mountain Oil, LLC | Jacksboro, TX 76458 | Oil Operator | Apr 2025 |
| 10509 | Squyres Oil Co., Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Nov 2024 |
| 10510 | SR Production Corp. | Liberty, TX 77575 | Oil & Gas Operator | Mar 2010 |
| 10511 | SRG Oil Corporation | Abilene, TX 79604 | Oil & Gas Operator | Apr 1994 |
| 10512 | SRS Properties, LLC | Whitehouse, TX 75791 | Oil & Gas Operator | Apr 2025 |
| 10513 | SRV Oil Co | Coleman, TX 76834 | Oil Operator | Apr 2025 |
| 10514 | SS Operating LLC | Water Valley, TX 76958 | Oil Operator | Apr 2025 |
| 10515 | SSC, Inc. | Lubbock, TX 79408 | Oil & Gas Operator | Apr 2025 |
| 10516 | St. Cajetan Oil Company, LLC | Gainesville, TX 76241 | Oil & Gas Operator | Apr 2025 |
| 10517 | St. Clair Energy Corporation | Tulsa, OK 74153 | Oil & Gas Operator | Mar 2008 |
| 10518 | St. Johns Operating #1 L.P. | Houston, TX 77060 | Oil & Gas Operator | Aug 2023 |
| 10519 | St. Mary Energy Company | Houston, TX 77079 | Oil & Gas Operator | Aug 2008 |
| 10520 | St. Mary Land & Exploration Co | Denver, CO 80201 | Oil & Gas Operator | Jun 2010 |
| 10521 | St. Mary Operating Company | Denver, CO 80203 | Oil & Gas Operator | Mar 2019 |
| 10522 | Sta-Kel Incorporated | Graham, TX 76450 | Oil & Gas Operator | Dec 2000 |
| 10523 | Stablerock Energy L.L.C. | Oklahoma City, OK 73106 | Oil & Gas Operator | Apr 2025 |
| 10524 | Stacha, Eddy A. | Rice, TX 75155 | Oil & Gas Operator | Apr 2025 |
| 10525 | Stacy Reamy | Purdon, TX 76679 | Oil Operator | Apr 2025 |
| 10526 | Stagg Investment Group, Inc. | Midland, TX 79701 | Oil Operator | May 2013 |
| 10527 | Staggered T Oil LLC | Quanah, TX 79252 | Oil Operator | Apr 2025 |
| 10528 | Staghorn Energy, LLC | Tulsa, OK 74103 | Oil & Gas Operator | Jan 2025 |
| 10529 | Staghorn Petroleum II LLC | Tulsa, OK 74103-3500 | Oil & Gas Operator | Feb 2025 |
| 10530 | Staghorn Resources, LLC | Tulsa, OK 74103 | Oil & Gas Operator | Apr 2015 |
| 10531 | Stahl Petroleum Co. | Amarillo, TX 79118 | Oil & Gas Operator | Aug 2003 |
| 10532 | Stal Oil Production, L.L.C. | Argyle, TX 76226 | Oil Operator | Apr 2025 |
| 10533 | Staley Oil Company | Wichita Falls, TX 76308 | Oil & Gas Operator | Jan 2000 |
| 10534 | Staley Operating Co. | Midland, TX 79702 | Oil & Gas Operator | Jan 2022 |
| 10535 | Staley, Jack C. | Wichita Falls, TX 76308 | Oil & Gas Operator | Jan 2000 |
| 10536 | Stalking Horse Energy, Limited Liability Company | Houston, TX 77084 | Oil & Gas Operator | Apr 2025 |
| 10537 | Stallion Energy LLC | Houston, TX 77090 | Oil & Gas Operator | Oct 2009 |
| 10538 | Stallion Energy, Inc. | Houston, TX 77060 | Oil & Gas Operator | Oct 2017 |
| 10539 | Stallion Oil Company | Lafayette, LA 70505 | Oil & Gas Operator | Jun 2004 |
| 10540 | Stallion Operating, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Apr 2025 |
| 10541 | Stampede Energy Corp. | Canada, 00100 | Oil & Gas Operator | Mar 2000 |
| 10542 | Stamper Operating Co., Inc. | Jacksboro, TX 76458 | Oil & Gas Operator | Apr 2025 |
| 10543 | Standard Oil Company, Inc. | Parkesburg, WV 26103 | Oil & Gas Operator | Mar 2022 |
| 10544 | Standard Oil Tools, Inc. | College Sta, TX 77845 | Oil & Gas Operator | Apr 2025 |
| 10545 | Standard Resources Corp. | Houston, TX 77063 | Oil & Gas Operator | Apr 2025 |
| 10546 | Stanolind Operating Corp. | Midland, TX 79701 | Oil & Gas Operator | Apr 2008 |
| 10547 | Stanolind Operating LLC | Midland, TX 79702 | Oil & Gas Operator | Apr 2021 |
| 10548 | Stanolind Permian LLC | Midland, TX 79705 | Oil & Gas Operator | Apr 2025 |
| 10549 | Stanolind Production LLC | Midland, TX 79702 | Oil & Gas Operator | Dec 2020 |
| 10550 | Stanotex, LLC | Katy, TX 77494 | Oil & Gas Operator | Apr 2025 |
| 10551 | Stanton Mineral Development Inc | Austin, TX 78759 | Oil & Gas Operator | Apr 2025 |
| 10552 | Staples, James W. | Tuleta, TX 78162 | Oil & Gas Operator | Sep 2014 |
| 10553 | Staples, James W. Prod. Co. | Tuleta, TX 78162 | Oil & Gas Operator | Apr 2025 |
| 10554 | Staples, Tommy Oil Co. | Pettus, TX 78146 | Oil & Gas Operator | Mar 2008 |
| 10555 | Star Energy Inc | Dayton, PA 16222-4325 | Oil & Gas Operator | Dec 2023 |
| 10556 | Star Of Texas Energy SRVS, Inc. | Austin, TX 78702 | Oil & Gas Operator | Apr 2025 |
| 10557 | Star Oil & Gas | Ben Bolt, TX 78342 | Oil & Gas Operator | Apr 2025 |
| 10558 | Star One Energy, Inc. | Fort Worth, TX 76163 | Oil & Gas Operator | May 2012 |
| 10559 | Star Operating, Inc | Fort Worth, TX 76185 | Oil & Gas Operator | Apr 2025 |
| 10560 | Star Production, Inc. | Dallas, TX 75360 | Oil & Gas Operator | Apr 2025 |
| 10561 | Star Royalty Company | Oklahoma City, OK 73177 | Gas Operator | Sep 1998 |
| 10562 | Star-Jet Co. | Gainesville, TX 76240 | Oil Operator | Apr 2025 |
| 10563 | Starco Exploration, Inc. | Dallas, TX 75360 | Oil & Gas Operator | Apr 2025 |
| 10564 | Stardust Leasing, Inc. | Richmond, TX 77469 | Oil & Gas Operator | Jul 1999 |
| 10565 | Stark Petroleum | Tuleta, TX 78162 | Oil & Gas Operator | Apr 2025 |
| 10566 | Starkey Oilfield Service, Inc. | Sweet Home, TX 77987 | Oil & Gas Operator | Aug 2004 |
| 10567 | Starlight Ridge | Whitesboro, TX 76273 | Oil & Gas Operator | Apr 2025 |
| 10568 | Starr Operating Company | Austin, TX 78759 | Oil & Gas Operator | Apr 2025 |
| 10569 | Starr Operating, LLC | San Antonio, TX 78209 | Oil & Gas Operator | Apr 2025 |
| 10570 | Starrak Operating Company, Inc. | Midland, TX 79706 | Oil & Gas Operator | Jun 1999 |
| 10571 | Startap, Inc. | Conroe, TX 77305 | Oil Operator | Apr 2025 |
| 10572 | Startex Energy, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Apr 2025 |
| 10573 | Stasney Well Service, LLC | Albany, TX 76430 | Oil & Gas Operator | Apr 2025 |
| 10574 | Stasney, H. R. & Sons, LTD. | Albany, TX 76430 | Oil & Gas Operator | Apr 2025 |
| 10575 | Statex Operating, LLC | Dallas, TX 75229 | Oil & Gas Operator | Mar 2007 |
| 10576 | Statex Petroleum Inc | Dallas, TX 75229 | Oil & Gas Operator | Dec 2000 |
| 10577 | Statia Enterprises, Inc | Irving, TX 75014 | Oil & Gas Operator | Apr 2025 |
| 10578 | Statoil Oil & Gas LP | Austin, TX 78730 | Oil & Gas Operator | Oct 2018 |
| 10579 | Statoil Texas Onshore Prop LLC | Austin, TX 78730 | Oil & Gas Operator | Dec 2018 |
| 10580 | Staub, Larry | Richardson, TX 75080 | Oil & Gas Operator | Aug 2003 |
| 10581 | Staub, Larry, Inc. | Azle, TX 76020 | Oil & Gas Operator | Apr 2025 |
| 10582 | STB Energy Inc. | Tulsa, OK 74105 | Oil & Gas Operator | Jul 2008 |
| 10583 | Steadfast Oil & Gas, LLC | Midland, TX 79707 | Oil & Gas Operator | Oct 2022 |
| 10584 | Stealth Onsite Solutions LLC | Pasadena, TX 77505 | Oil Operator | Apr 2025 |
| 10585 | Stealth, Inc. | Cross Plains, TX 76443 | Gas Operator | Mar 1997 |
| 10586 | Stearns Operating Company | Abilene, TX 79604 | Oil & Gas Operator | Oct 1993 |
| 10587 | Steele, Mark E. | Graham, TX 76450 | Oil & Gas Operator | Apr 2025 |
| 10588 | Steinberger, D. | Windthorst, TX 76389 | Oil & Gas Operator | Oct 1995 |
| 10589 | Steinberger, Gerald | Windthorst, TX 76389 | Oil & Gas Operator | Sep 2007 |
| 10590 | Steindorf, Bert Oil & Gas Co. | Floresville, TX 78114 | Oil & Gas Operator | Apr 2025 |
| 10591 | Steinman, Frank C. | Electra, TX 76360 | Oil & Gas Operator | Apr 2025 |
| 10592 | Stelbar Oil Corp | Wichita, KS 67206 | Oil & Gas Operator | Aug 1995 |
| 10593 | Stelbar Oil Corporation, Inc. | Wichita, KS 67206 | Oil & Gas Operator | Dec 2024 |
| 10594 | Steller Energy & Investment Corp | Plano, TX 75093 | Oil & Gas Operator | Feb 2021 |
| 10595 | Stellex | De Leon, TX 76444 | Oil & Gas Operator | Apr 2025 |
| 10596 | Stelucan Energy, LLC | Wichita Falls, TX 76310 | Oil & Gas Operator | Apr 2025 |
| 10597 | Stelzer Drilling Co. Inc. | Post, TX 79356 | Oil Operator | Apr 2025 |
| 10598 | Stelzer, E.A. Oil Company | Post, TX 79356 | Oil & Gas Operator | Feb 2002 |
| 10599 | Stelzer, J. C. | Post, TX 79356 | Oil & Gas Operator | Dec 1995 |
| 10600 | Stephens & Johnson Operating Co. | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 2025 |