| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | R360 Environmental Solutions Of La, LLC | Oil Operator | Jan 2025 | |
| 2 | Reef Exploration Inc | Denver, CO 80202 | Oil & Gas Operator | Feb 2007 |
| 3 | Reserve Oil Inc. | Oil & Gas Operator | Jan 1980 | |
| 4 | Resource Acquisitions Corp. | Oil & Gas Operator | Dec 2002 | |
| 5 | River Bend Operating, Inc. | Oil & Gas Operator | Jul 1999 | |
| 6 | Rooster Petroleum, LLC | Oil & Gas Operator | Feb 2011 | |
| 7 | Rosewood Resources (Poc), Inc. | Oil & Gas Operator | Dec 1984 | |
| 8 | Rosewood Resources Inc | Dallas, TX 75201 | Oil & Gas Operator | Sep 2026 |