| 1 | G E Operating, Inc. | Graham, TX 76450 | Oil & Gas Operator | May 2020 |
| 2 | Gap Exploration, LTD. | Naples, FL 34110 | Oil & Gas Operator | Jul 2008 |
| 3 | Gecko | Dallas, TX 75205 | Oil & Gas Operator | Mar 2008 |
| 4 | Geodyne Operating Company | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2015 |
| 5 | Goldston Oil Corporation | Houston, TX 77257 | Oil & Gas Operator | Oct 2025 |
| 6 | Grace Petroleum Operating, LLC | Llano, TX 78643 | Oil & Gas Operator | Oct 2025 |
| 7 | Graham Royalty LTD | Covington, LA 70434 | Oil & Gas Operator | Jul 2007 |
| 8 | Grand Banks Energy Company | Fort Worth, TX 76102 | Oil & Gas Operator | Aug 2025 |
| 9 | Great Texas Crude Inc. | Fredericksbrg, TX 78624 | Oil & Gas Operator | Oct 2025 |
| 10 | Great Western Drilling Co | Midland, TX 79701 | Oil & Gas Operator | Oct 2025 |
| 11 | Great Western Onshore Inc | Houston, TX 77002 | Oil & Gas Operator | Mar 2008 |
| 12 | Greenhill Petroleum Corporation | Houston, TX 77077 | Oil & Gas Operator | Jan 1998 |
| 13 | Grizzly Op Of Delaware, LLC | Houston, TX 77057 | Oil & Gas Operator | Mar 2021 |
| 14 | Gruy Petroleum Management Co. | Irving, TX 75014 | Oil & Gas Operator | Nov 2014 |
| 15 | GTG Operating, LLC | Tyler, TX 75702 | Oil & Gas Operator | Oct 2025 |