| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Rains & Williams | Oil & Gas Operator | Nov 1995 | |
| 2 | Raydon Exploration, Inc. | Oklahoma City, OK 73118 | Oil & Gas Operator | Dec 2025 |
| 3 | Raymond Oil Co., Inc. | Wichita, KS 67201 | Oil & Gas Operator | Jun 2025 |
| 4 | Redland Resources LLC | Oklahoma City, OK 73127 | Oil & Gas Operator | Oct 2025 |
| 5 | Renick Energy, L.C. | Cimarron, KS 67835 | Gas Operator | Apr 2016 |
| 6 | Ring Energy, Inc. | Midland, TX 79702 | Oil & Gas Operator | Dec 2025 |
| 7 | Ritchie Explorat | Oil & Gas Operator | Dec 1996 |