| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | R. & R. Exploration, Inc. | Denton, TX 76202 | Oil Operator | Nov 1993 |
| 2 | R. Pannell Oil Company | Kilgore, TX 75663 | Oil Operator | Jan 2024 |
| 3 | Raybo, Inc. | Oil Operator | Dec 1990 | |
| 4 | Rayford Exploration | Oil Operator | Feb 1984 | |
| 5 | Rebel Enterprises, Inc. | Oil Operator | Dec 1991 | |
| 6 | Remuda Oil & Gas Corp. | Oil & Gas Operator | Aug 1987 | |
| 7 | Richard Nelson | Oil Operator | Feb 1987 | |
| 8 | River Rouge Minerals Inc | Oil & Gas Operator | Mar 1981 | |
| 9 | Robert A Craig | Oil Operator | Jul 2020 | |
| 10 | Robert K. Freeman | Oil Operator | Jul 1991 | |
| 11 | Roger Wilson | Oil Operator | Apr 2002 | |
| 12 | Roger Wilson, Inc. | Oil Operator | Jul 2019 | |
| 13 | Rogers Oil Co. | Bronson, KS 66716 | Oil & Gas Operator | Sep 1995 |
| 14 | Roxanna Acadia, LLC | Oil & Gas Operator | May 2023 |