| 1 | R K Petroleum Corp. | Midland, TX 79708 | Oil & Gas Operator | May 2024 |
| 2 | Rad Oil Company | Snyder, TX 79549 | Oil & Gas Operator | Mar 2025 |
| 3 | Radius Operating, LLC | Round Rock, TX 78664 | Oil & Gas Operator | Mar 2025 |
| 4 | Rainey, Wayne | Sweetwater, TX 79556 | Oil & Gas Operator | Feb 2019 |
| 5 | Ram Operating Inc. | Browns, IL 62818 | Oil & Gas Operator | Aug 2008 |
| 6 | Raptor Petroleum II, LLC | Houston, TX 77251 | Oil & Gas Operator | Mar 2025 |
| 7 | Rasmussen, Hal J. Operating, Inc | Midland, TX 79701 | Oil & Gas Operator | Apr 2009 |
| 8 | Raw Oil & Gas, Inc. | Lubbock, TX 79401 | Oil & Gas Operator | Mar 2025 |
| 9 | RBJ & Associates, LP | Midland, TX 79707 | Oil Operator | Jan 2020 |
| 10 | Read & Stevens, Inc. | Denver, CO 80202 | Oil & Gas Operator | Jul 2023 |
| 11 | Red Sand Resources LLC | Ada, OK 74821 | Oil Operator | Dec 2024 |
| 12 | Red Tank Resources, LLC | Dallas, TX 75379 | Oil & Gas Operator | Mar 2025 |
| 13 | Redwood Operating, Inc. | Houston, TX 77058 | Oil & Gas Operator | Mar 2025 |
| 14 | Regent Oil & Gas Company, L.P. | Dallas, TX 75225 | Oil & Gas Operator | Sep 2006 |
| 15 | Rendova Oil Company, Inc. | Midland, TX 79702 | Oil & Gas Operator | Oct 2002 |
| 16 | Rhombus Operating Co., LTD | Littleton, CO 80160 | Oil & Gas Operator | Mar 2025 |
| 17 | Richardson, Bud II | Graham, TX 76450 | Oil & Gas Operator | Mar 2025 |
| 18 | Rife Oil Properties Inc | Fort Worth, TX 76107 | Oil & Gas Operator | Mar 2025 |
| 19 | Rigged Up, LLC | Graham, TX 76450 | Oil Operator | Mar 2025 |
| 20 | RJD Management Co., Inc. | Lubbock, TX 79408 | Oil & Gas Operator | Mar 2025 |
| 21 | Robert C. Brower, LLC | Southlake, TX 76092 | Oil & Gas Operator | Mar 2025 |
| 22 | Roberts & Hammack, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Mar 2025 |
| 23 | Robertson Resources, Inc. | Midland, TX 79708 | Oil & Gas Operator | Mar 2025 |
| 24 | Robertson, French M. Oil Co. | Abilene, TX 79608 | Oil & Gas Operator | Mar 1995 |
| 25 | Rocker A Operating Company | Post, TX 79356 | Oil & Gas Operator | Aug 2022 |
| 26 | Rosewood Resources, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Mar 2025 |
| 27 | Round Rock Resources, Inc. | College Sta, TX 77845 | Oil & Gas Operator | Sep 2012 |
| 28 | Rover Petroleum Operating, LLC | Plano, TX 75075 | Oil & Gas Operator | Mar 2025 |
| 29 | Royalty Land & Dev. Co., Inc. | Wolfforth, TX 79382 | Oil & Gas Operator | Mar 2025 |
| 30 | Rozzlle Operating Company, LLC | Blackwell, TX 79506 | Oil & Gas Operator | Mar 2025 |
| 31 | Rudman Partnership, The | Dallas, TX 75201 | Oil & Gas Operator | Dec 2014 |
| 32 | Rusk Co. Well Service Co., Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Mar 2025 |
| 33 | Russell, C. M. Oil Company | Lubbock, TX 79423 | Oil & Gas Operator | Jan 2008 |
| 34 | Russell, L. J. Oil Company | Snyder, TX 79549 | Oil & Gas Operator | Mar 2025 |
| 35 | Russell, Phillip | Colorado City, TX 79512 | Oil & Gas Operator | Mar 2025 |
| 36 | Ruwco Oil And Gas Corp. | Austin, TX 78701 | Oil & Gas Operator | Aug 2021 |