| 1 | R. K. G. Engineering, Inc. | Odessa, TX 79760 | Oil & Gas Operator | Dec 2025 |
| 2 | R.K.G. Operations, Inc. | Odessa, TX 79760 | Oil & Gas Operator | Jun 2004 |
| 3 | R3 Operating Corporation | Denver, CO 80222 | Oil & Gas Operator | Dec 2025 |
| 4 | Ram Operating Inc. | Browns, IL 62818 | Oil & Gas Operator | Aug 2008 |
| 5 | Range Production Company | Fort Worth, TX 76102 | Oil & Gas Operator | Sep 2021 |
| 6 | Raptor Petroleum Develop, LLC | Edmond, OK 73034 | Oil & Gas Operator | Dec 2025 |
| 7 | Raptor Resources, Inc. | Austin, TX 78701 | Oil & Gas Operator | Dec 2025 |
| 8 | Rasmussen, Hal J. Operating, Inc | Midland, TX 79701 | Oil & Gas Operator | Apr 2009 |
| 9 | Rasmussen, Tom | San Angelo, TX 76904 | Oil & Gas Operator | Dec 2025 |
| 10 | Rattler Midstream Operating LLC | Midland, TX 79701 | Oil Operator | Dec 2025 |
| 11 | RBC Exploration Company | Tulsa, OK 74114 | Oil & Gas Operator | May 2013 |
| 12 | RBD-Shelby Agency | Dallas, TX 75283 | Oil & Gas Operator | Dec 1993 |
| 13 | RBJ & Associates, LP | Midland, TX 79707 | Oil Operator | Jan 2020 |
| 14 | Rci, L.L.C. | Abilene, TX 79606 | Oil & Gas Operator | Dec 2025 |
| 15 | Reata Resources | Kermit, TX 79745 | Oil & Gas Operator | Sep 2007 |
| 16 | Reatta Energy, Inc. | Midland, TX 79702 | Oil & Gas Operator | Dec 2025 |
| 17 | Redco Oil & Gas, Inc. | Andrews, TX 79714 | Oil & Gas Operator | Dec 2025 |
| 18 | Redstone Oil & Gas Company | Dallas, TX 75225 | Oil & Gas Operator | Jan 2020 |
| 19 | Reeves County Systems, Inc. | Odessa, TX 79760 | Oil & Gas Operator | Aug 2019 |
| 20 | Regal Petroleum Services | Euless, TX 76039 | Oil & Gas Operator | Aug 2002 |
| 21 | Regent Oil & Gas Company, L.P. | Dallas, TX 75225 | Oil & Gas Operator | Sep 2006 |
| 22 | Rein Pusher Operating LLC | Brenham, TX 77834 | Oil & Gas Operator | Dec 2025 |
| 23 | Reliance Energy, Inc. | Midland, TX 79701 | Oil & Gas Operator | Dec 2025 |
| 24 | Remuda Operating Company | Midland, TX 79711 | Oil & Gas Operator | Dec 2025 |
| 25 | Rendova Oil Company, Inc. | Midland, TX 79702 | Oil & Gas Operator | Oct 2002 |
| 26 | Resaca Operating Company | Houston, TX 77010 | Oil & Gas Operator | Sep 2013 |
| 27 | Resolute Natural Res. Co., LLC | Midland, TX 79706 | Oil & Gas Operator | Dec 2025 |
| 28 | Rhonda Operating Company | Midland, TX 79710 | Oil & Gas Operator | Aug 2017 |
| 29 | Richardson, Bud II | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 30 | Richland Resources Corporation | Oklahoma City, OK 73114 | Oil & Gas Operator | Dec 2025 |
| 31 | Richmond Drilling Company | Midland, TX 79705 | Oil & Gas Operator | Apr 2017 |
| 32 | Rim Operating, Inc. | Englewood, CO 80112 | Oil & Gas Operator | Dec 2025 |
| 33 | Ring Energy, Inc. | Midland, TX 79702 | Oil & Gas Operator | Dec 2025 |
| 34 | Rme Petroleum Company | Houston, TX 77251 | Oil & Gas Operator | Nov 2016 |
| 35 | RMR Operating, LLC | Plano, TX 75024 | Oil & Gas Operator | Dec 2025 |
| 36 | Robertson Resources, Inc. | Horseshoe Bay, TX 78657 | Oil & Gas Operator | Dec 2025 |
| 37 | Roca Resource Company, Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 38 | Rover Operating Inc | Richardson, TX 75080 | Oil & Gas Operator | Apr 2000 |
| 39 | Rowland, Rex D. | Midland, TX 79701 | Oil & Gas Operator | Dec 2017 |
| 40 | RSP Permian, LLC | Midland, TX 79701 | Oil & Gas Operator | Jul 2018 |
| 41 | Rust Oil Corp. | Fort Worth, TX 76121 | Oil & Gas Operator | Dec 2025 |
| 42 | Ryann Operating, LLC | Waller, TX 77484 | Oil & Gas Operator | Dec 2025 |