| 1 | G E Operating, Inc. | Graham, TX 76450 | Oil & Gas Operator | May 2020 |
| 2 | Gala Resources, LTD. | Graham, TX 76450 | Oil & Gas Operator | Jan 2024 |
| 3 | Garrison Bros Pipe & Used Equip Inc | El Reno, OK 73036-1026 | Oil & Gas Operator | Aug 2013 |
| 4 | Gas Development Corp. | Broken Arrow, OK 74012 | Oil & Gas Operator | Mar 2015 |
| 5 | Gasanadarko LTD | Oklahoma City, OK 73116 | Gas Operator | May 1994 |
| 6 | Gemini Exploration Inc | Oklahoma City, OK 73159 | Oil & Gas Operator | May 2013 |
| 7 | General Atlantic Resources Inc | Denver, CO 80202 | Oil & Gas Operator | Jan 2022 |
| 8 | General Exploration Inc | | Oil & Gas Operator | Aug 2001 |
| 9 | Geo American Resources Inc | Tulsa, OK 74130-1575 | Oil & Gas Operator | Jan 2024 |
| 10 | Geo Engineering Inc | Houston, TX 77027 | Oil & Gas Operator | Jun 2009 |
| 11 | Geodyne Operating Company | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2015 |
| 12 | GHK Company LLC (The) | Oklahoma City, OK 73118-1120 | Oil & Gas Operator | Apr 2018 |
| 13 | Gilliland Oil And Gas Inc | Hennessey, OK 73742-0305 | Oil & Gas Operator | Feb 2024 |
| 14 | Golden Gas Energies Inc | | Oil & Gas Operator | Jan 1999 |
| 15 | Golden Gas Production Company | Tulsa, OK 74136 | Oil & Gas Operator | Jan 2024 |
| 16 | Gosnell Tony Operating LLC | | Oil & Gas Operator | Feb 2024 |
| 17 | Grace Petroleum LP | Midland, TX 79708 | Oil & Gas Operator | May 2016 |
| 18 | Grand Resources Inc | Tulsa, OK 74137 | Oil & Gas Operator | Apr 2024 |
| 19 | Great Western Land Co Inc | Tulsa, OK 74136-1517 | Oil & Gas Operator | Jun 2000 |
| 20 | Green River Exploration Co | Tulsa, OK 74121-1468 | Oil & Gas Operator | Sep 2011 |
| 21 | Green Valley Disposal Serv LLC | Waynoka, OK 73860-0194 | Oil Operator | Feb 2024 |