| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | R & H Oil & Gas Inc | Oil & Gas Operator | Apr 1992 | |
| 2 | Ram Management Company, Inc. | Oil & Gas Operator | Sep 1984 | |
| 3 | Relmm Corporation | Oil & Gas Operator | May 1980 | |
| 4 | Remuda Oil & Gas Corp. | Oil & Gas Operator | Aug 1987 | |
| 5 | Remuda Operating Company | Midland, TX 79711 | Oil & Gas Operator | Apr 2026 |
| 6 | Retsal Drilling Co. | Oil & Gas Operator | Jan 1984 | |
| 7 | Retsal Production Company | Oil & Gas Operator | Mar 1986 | |
| 8 | Rippy Oil Company | Tyler, TX 75702 | Oil & Gas Operator | Apr 2026 |
| 9 | River Rouge Minerals | Oil & Gas Operator | Dec 2024 | |
| 10 | Rockcliff Operating La LLC | Oil & Gas Operator | Jul 2022 | |
| 11 | Rockland Oil Company | Addison, TX 75001 | Oil & Gas Operator | Jan 2026 |
| 12 | Roger Wilson, Inc. | Oil Operator | Jul 2019 | |
| 13 | Rosbottom Production Corp | Shreveport, LA 71134 | Oil & Gas Operator | Dec 2017 |
| 14 | Ross Production Co. | Shreveport, LA 71101 | Oil & Gas Operator | Mar 2000 |