| 1 | G P II Energy, Inc. | Midland, TX 79710 | Oil & Gas Operator | Sep 2020 |
| 2 | Gaea Services, Inc. | San Antonio, TX 78216 | Oil & Gas Operator | Sep 2021 |
| 3 | Gecko | Dallas, TX 75205 | Oil & Gas Operator | Mar 2008 |
| 4 | General Atlantic Resources Inc | Denver, CO 80202 | Oil & Gas Operator | Jan 2022 |
| 5 | Geotech Production Inc | Centennial, CO 80016 | Oil & Gas Operator | Jun 2020 |
| 6 | Glenn Supply Company, Inc. | Tulsa, OK 74101 | Oil & Gas Operator | Jun 2025 |
| 7 | Grace Petroleum Corp. | Tulsa, OK 74103 | Oil & Gas Operator | Oct 1997 |
| 8 | Grace Petroleum Operating, LLC | Llano, TX 78643 | Oil & Gas Operator | Oct 2025 |
| 9 | Grand Banks Energy Company | Fort Worth, TX 76102 | Oil & Gas Operator | Aug 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 | Grizzly Op Of Delaware, LLC | Houston, TX 77057 | Oil & Gas Operator | Mar 2021 |
| 13 | Gross, Charles E. | Dallas, TX 75220 | Oil & Gas Operator | Feb 2012 |
| 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 |
| 16 | Guffey, Roy, Oil Company | Dallas, TX 75206 | Oil & Gas Operator | Aug 2011 |