| 1 | G A W Oil Company LLC | Enid, OK 73702-3926 | Oil & Gas Operator | Jan 2026 |
| 2 | G B & D Oil & Gas | Kilgore, TX 75663-2881 | Oil & Gas Operator | Mar 2015 |
| 3 | G E Operating, Inc. | Graham, TX 76450 | Oil & Gas Operator | May 2020 |
| 4 | Gala Resources, LTD. | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 5 | Gary L. Deaton Corporation | Oklahoma City, OK 73105-3023 | Oil & Gas Operator | Mar 2015 |
| 6 | Gda Investments Inc | Oklahoma City, OK 73123-0403 | Oil & Gas Operator | Dec 2025 |
| 7 | General Producing Co | Houston, TX 77002 | Oil & Gas Operator | Jun 1993 |
| 8 | Geodyne Operating Company | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2015 |
| 9 | George H Russell Oil & Gas Investments Inc | Mustang, OK 73064 | Oil & Gas Operator | Oct 2023 |
| 10 | Getty Oil Company | Hays, KS 67601 | Oil & Gas Operator | Mar 2015 |
| 11 | Gilliland Oil And Gas Inc | Hennessey, OK 73742 | Oil & Gas Operator | Jan 2026 |
| 12 | Glenn Supply Company, Inc. | Tulsa, OK 74101 | Oil & Gas Operator | Dec 2025 |
| 13 | Goff D C Revocable Energy Trust | Fayetteville, AR 72702-1465 | Oil & Gas Operator | Jun 2005 |
| 14 | Golden Gas Production Company | Tulsa, OK 74136 | Oil & Gas Operator | Nov 2025 |
| 15 | Good Vaughn | Enid, OK 73702 | Oil & Gas Operator | Jul 2008 |
| 16 | Good Vaughn Oil Company LLC | Enid, OK 73702-3744 | Oil & Gas Operator | Jun 2019 |
| 17 | Gothic Energy Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Jul 2015 |
| 18 | Gothic Production Corporation | Oklahoma City, OK 73154 | Oil & Gas Operator | Dec 2016 |
| 19 | GPM Gas Corporation | Oklahoma City, OK 73102-5627 | Oil & Gas Operator | Nov 1998 |
| 20 | Graham Royalty LTD | Covington, LA 70434 | Oil & Gas Operator | Jul 2007 |
| 21 | Grand Resources Inc | Tulsa, OK 74137 | Oil & Gas Operator | Mar 2026 |
| 22 | Great Plains Pipeline Company | Tulsa, OK 74135-6405 | Oil & Gas Operator | Jul 2014 |
| 23 | Green Operating Company Inc | Tulsa, OK 74135 | Oil & Gas Operator | Sep 2025 |
| 24 | Green River Resources Inc. | Keystone, CO 80435 | Oil & Gas Operator | Mar 2026 |
| 25 | Greenhead Energy Operating LLC | Oklahoma City, OK 73131 | Oil & Gas Operator | Jan 2026 |
| 26 | Griffin Resources LLC | Breckenridge, TX 76424 | Oil & Gas Operator | Mar 2026 |
| 27 | Grizzly Operating, LLC | Houston, TX 77057 | Oil & Gas Operator | Dec 2025 |
| 28 | Guest R E Oil Producer | Edmond, OK 73083-0805 | Oil & Gas Operator | Mar 2015 |
| 29 | Gulf Production Corporation | Oklahoma City, OK 73114 | Oil & Gas Operator | Apr 2015 |
| 30 | Gulfstream Petroleum Corp | | Oil & Gas Operator | Feb 2002 |
| 31 | GW Petroleum Inc | Houston, TX 77002 | Oil & Gas Operator | Apr 1993 |