| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | R&R Resources LLC | Oil & Gas Operator | Mar 2024 | |
| 2 | R. J. Bellevue | Oil & Gas Operator | Feb 2024 | |
| 3 | R. W. Henry | Oil & Gas Operator | Dec 1999 | |
| 4 | Raak-Wilson Properties | Oil & Gas Operator | Dec 1999 | |
| 5 | Rare Petro Exploration LLC | Oil & Gas Operator | Mar 2024 | |
| 6 | Razar Resources | Oil & Gas Operator | Dec 2000 | |
| 7 | Redbank Oil Co. | Oil Operator | Feb 2024 | |
| 8 | Redbank Oil Co. Operator | Oil Operator | Feb 2024 | |
| 9 | Reserve Petroleum California Inc. | Oil & Gas Operator | Feb 2024 | |
| 10 | Rio Bravo Poso | Oil & Gas Operator | Dec 2009 | |
| 11 | Road Oil Sales Inc. | Tyler, TX 75711 | Oil Operator | Dec 1984 |
| 12 | Robert E. & Ruby C. Beasley Trustees | Oil & Gas Operator | Dec 1990 | |
| 13 | Rothschild Oil Co. | Oil Operator | Dec 1982 | |
| 14 | Roya Resources LLC | Oil & Gas Operator | Mar 2022 | |
| 15 | Royale Energy Inc | San Diego, CA 92108-4518 | Oil & Gas Operator | Mar 2024 |