| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Rebel Drilling Co. Inc. | Oil & Gas Operator | Oct 1995 | |
| 2 | Riceland Petroleum Company | Oil & Gas Operator | Dec 2023 | |
| 3 | Ridgeway Exco, Inc. | San Antonio, TX 78279 | Oil & Gas Operator | Mar 1996 |
| 4 | Rio Grande Drilling Company | San Antonio, TX 78212 | Oil & Gas Operator | Dec 1999 |
| 5 | Ripco | Oil & Gas Operator | Jul 1986 | |
| 6 | Riseden, LTD | Oil & Gas Operator | Nov 1989 | |
| 7 | Rme Petroleum Company | Houston, TX 77251 | Oil & Gas Operator | Nov 2016 |