| 1 | Gardner Energy Corporation | Houston, TX 77024 | Oil & Gas Operator | Mar 1999 |
| 2 | Garrison Operating, L.L.C. | Tomball, TX 77375 | Oil & Gas Operator | Apr 2024 |
| 3 | Gasper Rice Resources, LTD. | Houston, TX 77068 | Oil & Gas Operator | Apr 2024 |
| 4 | Gei Management Co., Inc. | Houston, TX 77024 | Oil & Gas Operator | Sep 1993 |
| 5 | Gemini Exploration Inc | Oklahoma City, OK 73159 | Oil & Gas Operator | May 2013 |
| 6 | Genecov Group, Inc. The | Tyler, TX 75713 | Oil & Gas Operator | Dec 2002 |
| 7 | Genesis Crude Oil LP | Houston, TX 77002 | Oil & Gas Operator | Apr 2000 |
| 8 | GMX Resources, Inc. | Oklahoma City, OK 73114 | Oil & Gas Operator | Mar 2014 |
| 9 | Goldsberry Operating Co., Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Aug 2020 |
| 10 | Goldston Oil Corporation | Houston, TX 77257 | Oil & Gas Operator | Apr 2024 |
| 11 | Goodrich Oil Company | Shreveport, LA 71101 | Oil & Gas Operator | Nov 2001 |
| 12 | Goodrich Petroleum Company | Houston, TX 77002 | Oil & Gas Operator | Feb 2022 |
| 13 | Goodwill, G. R. | Shreveport, LA 71107 | Oil & Gas Operator | Apr 2024 |
| 14 | Graward Operating, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Apr 2024 |
| 15 | Graystone Energy Corporation | Judson, TX 75660 | Oil & Gas Operator | Apr 2024 |
| 16 | Great Northern Energy, Inc | Irving, TX 75039 | Oil & Gas Operator | Apr 2024 |
| 17 | Griffith Resources | Kilgore, TX 75663 | Oil & Gas Operator | Oct 2013 |
| 18 | GTG Operating, LLC | Tyler, TX 75702 | Oil & Gas Operator | Apr 2024 |
| 19 | Gulfstream Oil & Gas, Inc. | Allen, TX 75013 | Oil & Gas Operator | Jun 2018 |