| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Rama Operating Co., Inc. | Stafford, KS 67578 | Oil & Gas Operator | Sep 2024 |
| 2 | Red Oak Energy, Inc. | Wichita, KS 67207 | Oil & Gas Operator | Jul 2024 |
| 3 | Redland Resources, LLC | Oklahoma City, OK 73127 | Oil & Gas Operator | Sep 2024 |
| 4 | Richardson J Mar | Oil & Gas Operator | Apr 1995 | |
| 5 | Richardson Oil | Oil & Gas Operator | Dec 2019 | |
| 6 | Richardson Oil Operating | Oil & Gas Operator | Dec 2009 | |
| 7 | Rine Exploration | Oil & Gas Operator | Jul 1994 | |
| 8 | Robert-Gay Energ | Oil & Gas Operator | Jun 1992 | |
| 9 | Roberts Resources, Inc. | Wichita, KS 67275 | Oil & Gas Operator | Jul 2024 |
| 10 | Robinson Oil Com | Oil & Gas Operator | Feb 1995 |