| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Ramco Oil & Gas Inc | Midland, TX 79701 | Oil & Gas Operator | Nov 2006 |
| 2 | Red River Petroleum Inc | Tipton, OK 73570 | Oil Operator | May 2026 |
| 3 | Ridge Petroleum Inc. | Tyler, TX 75701 | Oil & Gas Operator | Sep 2026 |
| 4 | Riggins Energy Inc. | Houston, TX 77077 | Oil & Gas Operator | Sep 2026 |
| 5 | Ronco Energy Resources Inc | Norman, OK 73072 | Oil & Gas Operator | Apr 2015 |
| 6 | Rox Exploration Inc | Norman, OK 73069-6301 | Oil & Gas Operator | Jun 2026 |