| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | R & B Oil Company, LLC Of Texas | Oil & Gas Operator | Jan 2025 | |
| 2 | R&R Resources Corporation | Houston, TX 77056 | Oil & Gas Operator | Dec 2015 |
| 3 | Range Production Company | Fort Worth, TX 76102 | Oil & Gas Operator | Sep 2021 |
| 4 | Republic Mineral Corporation | Oil & Gas Operator | Sep 1987 | |
| 5 | Resource Securities Corp. | Oil & Gas Operator | Mar 2005 | |
| 6 | Resources Investment Corp | Denver, CO 80202 | Oil & Gas Operator | Sep 2018 |
| 7 | Rig Iron, Inc. | Oil & Gas Operator | Mar 1991 | |
| 8 | Robert L. Waterbury | Oil & Gas Operator | Nov 2001 | |
| 9 | Robert L. Waterbury, L.L.C. | Oil & Gas Operator | Dec 2024 | |
| 10 | Roppolo Petro/Sun Explor& Prod | Oil & Gas Operator | Sep 1988 | |
| 11 | Rozel Operating Company | Oil & Gas Operator | Oct 2014 | |
| 12 | Rse, Inc. | Houston, TX 77077 | Oil & Gas Operator | Sep 2000 |