| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Graham-Michaelis | Oil & Gas Operator | Nov 1996 | |
| 2 | Grand Mesa Operating Company | Wichita, KS 67206 | Oil & Gas Operator | Sep 2025 |
| 3 | Great Plains Petroleum, Inc. | Snyder, TX 79549 | Oil & Gas Operator | Jun 2025 |