| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Germany Oil Company | Tulsa, OK 74135 | Oil & Gas Operator | Oct 2002 |
| 2 | Gibraltar Energy Co., Inc. & Richard H. Mason | Gas Operator | Aug 1995 | |
| 3 | Gibraltar Energy Company, Inc. | Oil & Gas Operator | Jul 2025 | |
| 4 | Grace Petroleum Corp. | Tulsa, OK 74103 | Oil & Gas Operator | Oct 1997 |
| 5 | Griffin Resources, Inc. | Oil & Gas Operator | Jun 2025 | |
| 6 | Gulf Pine Energy, LP | Oil & Gas Operator | Jun 2025 |