| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | R & B Oil Company, LLC Of Texas | Oil & Gas Operator | Jan 2025 | |
| 2 | R & M Oil Co. | Fredonia, KS 66736 | Oil & Gas Operator | Aug 2002 |
| 3 | Ranger, Inc. | Oil & Gas Operator | Dec 1986 | |
| 4 | Ray Energy, LLC | Oil Operator | Jan 2025 | |
| 5 | Reliable Prod Service Inc. | Oil Operator | Mar 2007 | |
| 6 | Rock Energy Operating Company | Oil & Gas Operator | Nov 2008 | |
| 7 | Rock Energy, Inc. | Oil & Gas Operator | Sep 1992 | |
| 8 | Rodessa Operating Company | Corpus Chrsti, TX 78426 | Oil & Gas Operator | Oct 2025 |
| 9 | RPS Energy, Inc. | Oil & Gas Operator | Jul 2020 |