| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | G.G. Cornwell | Oil Operator | Apr 1987 | |
| 2 | Gage Energy, LLC | Oil Operator | Sep 2019 | |
| 3 | Gator Oil Co | Banner Elk, NC 28604 | Oil Operator | Dec 2020 |
| 4 | Geodyne Operating Company | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2015 |
| 5 | Gravtro, Inc. | Oil Operator | Apr 1986 | |
| 6 | Griffin & Griffin Oil Co. Inc. | Oil & Gas Operator | Jun 2001 | |
| 7 | Guaranty Energy Corporation | Oil & Gas Operator | Aug 1990 | |
| 8 | Guido & Arnold | Oil & Gas Operator | Feb 1982 | |
| 9 | Guido Energy Co & Guernsey Pet | Oil Operator | Aug 1991 | |
| 10 | Gyb-Britlind Oil, LLC | Oil & Gas Operator | Jun 2016 |