| 1 | 314 Operating | Rotan, TX 79546 | Oil Operator | Oct 2025 |
| 2 | Adcock, Leroy | Ozona, TX 76943 | Oil & Gas Operator | Jun 2009 |
| 3 | Beach Exploration, Inc. | Midland, TX 79701 | Oil & Gas Operator | Oct 2025 |
| 4 | Branch Productions | Graham, TX 76450 | Oil & Gas Operator | May 2019 |
| 5 | Britnic Oil & Gas, Inc. | College Sta, TX 77845 | Oil & Gas Operator | Oct 2025 |
| 6 | Broadway Operating Company Inc. | Lubbock, TX 79401 | Oil & Gas Operator | Aug 2002 |
| 7 | Carpenter Services | Colorado City, TX 79512 | Oil & Gas Operator | May 1996 |
| 8 | Concho Oilfield Serv & Oper Co. | Eden, TX 76837 | Oil & Gas Operator | Oct 2025 |
| 9 | Diversified Operating Corp. | Golden, CO 80401 | Oil & Gas Operator | Oct 2012 |
| 10 | E.G.L. Resources, Inc. | Midland, TX 79702 | Oil & Gas Operator | Apr 2025 |
| 11 | Encon Services, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Oct 2025 |
| 12 | Fortune Production Co. | San Angelo, TX 76906 | Oil & Gas Operator | Dec 2008 |
| 13 | Franklin, J.W. Oil Operator | | Oil & Gas Operator | Nov 2001 |
| 14 | Gasper Rice Resources, LTD. | Houston, TX 77068 | Oil & Gas Operator | Oct 2025 |
| 15 | Geosurveys, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Oct 2025 |
| 16 | Great Western Drilling Co | Midland, TX 79701 | Oil & Gas Operator | Oct 2025 |
| 17 | H-M Resource Management, Inc. | Houston, TX 77055 | Oil & Gas Operator | Feb 2023 |
| 18 | Heartland Resources, Inc. | Temple, TX 76501 | Oil & Gas Operator | Mar 2008 |
| 19 | Ira Testers | Ira, TX 79527 | Oil & Gas Operator | Mar 2024 |
| 20 | J.W.S. | Talpa, TX 76882 | Oil & Gas Operator | Oct 2025 |
| 21 | Leclair Operating Co., Inc. | Abilene, TX 79602 | Oil & Gas Operator | Oct 2025 |
| 22 | Leclair Operating, L.L.C. | Abilene, TX 79602 | Oil & Gas Operator | Oct 2025 |
| 23 | Leede Oil & Gas Inc. | Greenwood VLG, CO 80111 | Oil & Gas Operator | Aug 2003 |
| 24 | Lindenmuth & Associates Inc | Austin, TX 78703 | Oil & Gas Operator | Jun 2025 |
| 25 | Lively Energy & Development Corp | Boerne, TX 78015 | Oil & Gas Operator | May 2015 |
| 26 | Llano Management Company, Inc. | El Campo, TX 77437 | Gas Operator | Oct 2001 |
| 27 | Marathon Oil Company | Houston, TX 77252 | Oil & Gas Operator | Aug 2025 |
| 28 | McDonnold Operating, Inc. | Midland, TX 79701 | Oil & Gas Operator | Oct 2025 |
| 29 | Medallion Oil Company | Houston, TX 77251 | Oil & Gas Operator | Jan 2012 |
| 30 | Mextex Operating Company | Austin, TX 78734 | Oil & Gas Operator | Oct 2025 |
| 31 | O.G.P. Operating, Inc. | Dallas, TX 75231 | Oil & Gas Operator | Oct 2025 |
| 32 | Ojb, Inc. | Buda, TX 78610 | Oil & Gas Operator | Mar 2013 |
| 33 | Okie Crude Company | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2025 |
| 34 | Okie Operating Company, LTD. | Tulsa, OK 74103 | Oil & Gas Operator | Oct 2025 |
| 35 | Osborn Heirs Co | San Antonio, TX 78217 | Oil & Gas Operator | Aug 2025 |
| 36 | Pitcock, Inc. | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 37 | Remuda Operating Company | Midland, TX 79711 | Oil & Gas Operator | Oct 2025 |
| 38 | Rodman Petroleum Corp. | Odessa, TX 79768 | Oil & Gas Operator | Jul 2023 |
| 39 | Sabre Oil And Gas Corp. | Houston, TX 77063 | Oil & Gas Operator | Oct 2025 |
| 40 | Sammax Operating LLC | Snyder, TX 79549 | Oil Operator | Oct 2025 |
| 41 | Sed Energy Inc. | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |
| 42 | Setex Oil And Gas Company | Houston, TX 77002 | Oil & Gas Operator | Feb 2012 |
| 43 | Sha-Jam Operating Corp. | Midland, TX 79701 | Oil & Gas Operator | Oct 2025 |
| 44 | Southwest Resources, Inc. | Brenham, TX 77834 | Oil & Gas Operator | Oct 2025 |
| 45 | St. Clair Energy Corporation | Tulsa, OK 74153 | Oil & Gas Operator | Mar 2008 |
| 46 | Swartz Oil Company | San Angelo, TX 76906 | Oil & Gas Operator | Oct 2025 |
| 47 | Tech Resources, Inc. | Georgetown, TX 78628 | Oil & Gas Operator | Dec 2001 |
| 48 | Tor Energy, LLC | Temple, TX 76501 | Oil & Gas Operator | Oct 2025 |
| 49 | Westwood Energy, Inc. | Abilene, TX 79608 | Oil & Gas Operator | May 2013 |
| 50 | Whiting Petroleum Corporation | Denver, CO 80290 | Oil & Gas Operator | Jan 2025 |
| 51 | Young Marshall R Oil Co | Fort Worth, TX 76107 | Oil & Gas Operator | Mar 2011 |