| 1 | R & R Well Service, Inc. | Arlington, TX 76012 | Oil & Gas Operator | Mar 2025 |
| 2 | R K Petroleum Corp. | Midland, TX 79708 | Oil & Gas Operator | May 2024 |
| 3 | Rainey, Wayne | Sweetwater, TX 79556 | Oil & Gas Operator | Feb 2019 |
| 4 | Rampart Petroleum, Incorporated | Buffalo Gap, TX 79508 | Oil & Gas Operator | Jan 2009 |
| 5 | Range Production Company | Fort Worth, TX 76102 | Oil & Gas Operator | Sep 2021 |
| 6 | Raymond, WM. C. | Rockdale, TX 76567 | Oil & Gas Operator | Mar 2025 |
| 7 | Redbud E & P, Inc. | Spring, TX 77379 | Oil & Gas Operator | Mar 2025 |
| 8 | Remington Oil | South Bend, TX 76481 | Oil & Gas Operator | Mar 2008 |
| 9 | Remuda Operating Company | Midland, TX 79711 | Oil & Gas Operator | Mar 2025 |
| 10 | RHB Exploration & Production,LLC | Grapevine, TX 76099 | Oil & Gas Operator | Mar 2025 |
| 11 | Rhodes Drilling Company | Abilene, TX 79608 | Oil & Gas Operator | Sep 2000 |
| 12 | Richardson, Bud II | Graham, TX 76450 | Oil & Gas Operator | Mar 2025 |
| 13 | Richey, Ray Management Co., Inc. | Fort Worth, TX 76108 | Oil & Gas Operator | Mar 2025 |
| 14 | Ridge Oil Company | Breckenridge, TX 76424 | Oil & Gas Operator | Mar 2025 |
| 15 | Rincon Production Co., Inc. | Farmers BRNCH, TX 75234 | Oil & Gas Operator | Apr 1997 |
| 16 | RMB Operating LLC | Lubbock, TX 79493 | Oil & Gas Operator | Mar 2025 |
| 17 | Robertson, French M. Oil Co. | Abilene, TX 79608 | Oil & Gas Operator | Mar 1995 |
| 18 | Roco Petroleum, Incorporated | Abilene, TX 79605 | Oil & Gas Operator | Mar 2025 |
| 19 | Rodessa Operating Company | Corpus Chrsti, TX 78426 | Oil & Gas Operator | Mar 2025 |
| 20 | Rosewood Resources, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Mar 2025 |
| 21 | Ross Engineering, Inc. | Abilene, TX 79601 | Oil & Gas Operator | Mar 2025 |
| 22 | Ross, Dwight M. DRLG. Co., Inc. | Wichita Falls, TX 76301 | Oil & Gas Operator | Mar 2025 |
| 23 | Rover Petroleum Operating, LLC | Plano, TX 75075 | Oil & Gas Operator | Mar 2025 |
| 24 | Rozzlle Operating Company, LLC | Blackwell, TX 79506 | Oil & Gas Operator | Mar 2025 |
| 25 | Ruby Operating Company, Inc | Clyde, TX 79510 | Oil & Gas Operator | Mar 2025 |
| 26 | Rust Oil Corp. | Fort Worth, TX 76108 | Oil & Gas Operator | Mar 2025 |
| 27 | RW Operating Corp. | Midland, TX 79702 | Oil & Gas Operator | Jul 2016 |