| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Goodrich Oil Company | Shreveport, LA 71101 | Oil & Gas Operator | Nov 2001 |
| 2 | Great Northern Energy, Inc | Irving, TX 75039 | Oil & Gas Operator | Apr 2024 |
| 3 | Great Western Drilling Co | Midland, TX 79701 | Oil & Gas Operator | Apr 2024 |
| 4 | Greenhill Petroleum Corporation | Houston, TX 77077 | Oil & Gas Operator | Jan 1998 |
| 5 | Gruy Petroleum Management Co. | Irving, TX 75014 | Oil & Gas Operator | Nov 2014 |
| 6 | Gulfmark Energy Inc | Houston, TX 77001 | Gas Operator | Apr 2023 |