| 1 | R K Petroleum Corp. | Midland, TX 79708 | Oil & Gas Operator | May 2024 |
| 2 | Radtke, D.E. & Associates, Inc. | Midland, TX 79710 | Oil & Gas Operator | May 2004 |
| 3 | Ram Operating Inc. | Browns, IL 62818 | Oil & Gas Operator | Aug 2008 |
| 4 | Range Production Company | Fort Worth, TX 76102 | Oil & Gas Operator | Sep 2021 |
| 5 | Rasmussen, Tom | San Angelo, TX 76904 | Oil & Gas Operator | Oct 2025 |
| 6 | Rattler Midstream Operating LLC | Midland, TX 79701 | Oil Operator | Oct 2025 |
| 7 | Raw Oil & Gas, Inc. | Lubbock, TX 79401 | Oil & Gas Operator | Oct 2025 |
| 8 | RBJ & Associates, LP | Midland, TX 79707 | Oil Operator | Jan 2020 |
| 9 | Read & Stevens, Inc. | Denver, CO 80202 | Oil & Gas Operator | Jul 2023 |
| 10 | Reatta Energy, Inc. | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |
| 11 | Reef Exploration, L.P. | Richardson, TX 75080 | Oil & Gas Operator | Oct 2025 |
| 12 | Regent Oil & Gas Company, L.P. | Dallas, TX 75225 | Oil & Gas Operator | Sep 2006 |
| 13 | Regions Operating, LLC | Midland, TX 79702 | Oil & Gas Operator | May 2024 |
| 14 | Reliance Energy, Inc. | Midland, TX 79701 | Oil & Gas Operator | Oct 2025 |
| 15 | Remnant Oil Operating, LLC | Midland, TX 79704 | Oil & Gas Operator | Jul 2024 |
| 16 | Renegade Operating Company, LLC | Abilene, TX 79608 | Oil Operator | Oct 2006 |
| 17 | Reo Operating LLC | Austin, TX 78747 | Oil & Gas Operator | Oct 2025 |
| 18 | Resolute Natural Res. Co., LLC | Midland, TX 79706 | Oil & Gas Operator | Oct 2025 |
| 19 | Reunion Energy Company | Houston, TX 77056 | Oil & Gas Operator | May 1996 |
| 20 | Reverence Operating LLC | Odessa, TX 79768 | Oil & Gas Operator | Oct 2025 |
| 21 | Riata Energy Inc | Oklahoma City, OK 73101 | Oil & Gas Operator | Apr 2008 |
| 22 | Rim Operating, Inc. | Englewood, CO 80112 | Oil & Gas Operator | Oct 2025 |
| 23 | RMB Operating LLC | Lubbock, TX 79493 | Oil & Gas Operator | Oct 2025 |
| 24 | Robertson Resources, Inc. | Horseshoe Bay, TX 78657 | Oil & Gas Operator | Oct 2025 |
| 25 | Robinson Operating Company | Abilene, TX 79604 | Oil & Gas Operator | Aug 2012 |
| 26 | Roca Operating, Inc. | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |
| 27 | Roca Resource Company, Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 28 | Rock Fish Operating LLC | McKinney, TX 75070 | Oil & Gas Operator | Oct 2025 |
| 29 | Roff Operating Company LLC | Houston, TX 77002 | Oil & Gas Operator | Oct 2025 |
| 30 | Rogers, S. K. Oil, Inc. | Lubbock, TX 79424 | Oil & Gas Operator | Oct 2025 |
| 31 | Rosewood Resources, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Oct 2025 |
| 32 | Roy Jackson Energy Operating, LLC | Midland, TX 79701 | Oil & Gas Operator | Oct 2025 |
| 33 | RSP Permian, LLC | Midland, TX 79701 | Oil & Gas Operator | Jul 2018 |
| 34 | Rusk Co. Well Service Co., Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Oct 2025 |