| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Gregco, Inc. | Paducah, TX 79248 | Oil & Gas Operator | May 1999 |
| 2 | Gruy Petroleum Management Co. | Irving, TX 75014 | Oil & Gas Operator | Nov 2014 |
| 3 | Gunn Oil Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Dec 2025 |