| 1 | G & M Gas & Oil | Midland, TX 79701 | Oil & Gas Operator | Jun 1998 |
| 2 | Ganador Operating, LLC | Boerne, TX 78006 | Oil & Gas Operator | Nov 2024 |
| 3 | GBG Operating Corp. | Wichita Falls, TX 76302 | Oil & Gas Operator | Sep 1998 |
| 4 | Genie Corporation | Abilene, TX 79604 | Oil & Gas Operator | Mar 2008 |
| 5 | Geonatural Resources, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Nov 2024 |
| 6 | Golden Specialties Oil & Gas | Midland, TX 79708 | Oil & Gas Operator | Nov 2024 |
| 7 | Grace Petroleum Corp. | Tulsa, OK 74103 | Oil & Gas Operator | Oct 1997 |
| 8 | Graham Royalty LTD | Covington, LA 70434 | Oil & Gas Operator | Jul 2007 |
| 9 | Graham, Bill J. Oil & Gas Corp. | Midland, TX 79710 | Oil & Gas Operator | Nov 2000 |
| 10 | Grand Energy, Inc. | Dallas, TX 75248 | Oil & Gas Operator | Oct 2002 |
| 11 | Great Western Drilling Co | Midland, TX 79701 | Oil & Gas Operator | Nov 2024 |
| 12 | Griffin Petroleum Company | Midland, TX 79705 | Oil & Gas Operator | Nov 2024 |
| 13 | Grizzly Op Of Delaware, LLC | Houston, TX 77057 | Oil & Gas Operator | Mar 2021 |
| 14 | Grover-McKinney Oil Company | Midland, TX 79702 | Oil & Gas Operator | Aug 2003 |
| 15 | Gruy Petroleum Management Co. | Irving, TX 75014 | Oil & Gas Operator | Nov 2014 |
| 16 | GTG Operating, LLC | Tyler, TX 75702 | Oil & Gas Operator | Nov 2024 |
| 17 | Gulf Production Corporation | Oklahoma City, OK 73114 | Oil & Gas Operator | Apr 2015 |