| 1 | G & C Petroleum Inc | Yale, OK 74085-2502 | Oil & Gas Operator | Jun 2025 |
| 2 | G M C Oil & Gas LTD | Oklahoma City, OK 73102-8804 | Oil & Gas Operator | Sep 1999 |
| 3 | Gaskins Glendell L | Slick, OK 74071 | Oil & Gas Operator | Jun 2025 |
| 4 | General Oil Company, Inc. | Wichita, KS 67213 | Oil & Gas Operator | Oct 2025 |
| 5 | Genie Oil & Gas Corporation | Broken Arrow, OK 74013-3783 | Oil & Gas Operator | Jun 2025 |
| 6 | GLB Exploration, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Jul 2025 |
| 7 | Glenn Supply Company, Inc. | Tulsa, OK 74101 | Oil & Gas Operator | Jun 2025 |
| 8 | Gomaco Operating Company | Tulsa, OK 74115 | Oil & Gas Operator | Jul 2025 |
| 9 | Graves J M | Tulsa, OK 74105 | Oil & Gas Operator | Sep 2007 |
| 10 | Graves John G Oil Prop Inc | Tulsa, OK 74116-5666 | Oil & Gas Operator | Feb 2001 |
| 11 | Gray Fox Operating Company | Tulsa, OK 74119 | Oil Operator | May 1993 |
| 12 | Grayhorse Operating Inc | Tulsa, OK 74103-4439 | Oil & Gas Operator | Jun 2025 |
| 13 | Great Plains Petroleum, Inc. | Snyder, TX 79549 | Oil & Gas Operator | Jun 2025 |
| 14 | Greg Hall Oil & Gas LLC | Norman, OK 73072 | Oil & Gas Operator | Jun 2025 |
| 15 | Griffin Well Service Inc | Konawa, OK 74849-9710 | Oil & Gas Operator | Jun 2025 |
| 16 | Ground Development Company Inc | Dallas, TX 75229-0377 | Oil & Gas Operator | Jan 2013 |
| 17 | Guest Petroleum Incorporated | Edmond, OK 73013 | Oil & Gas Operator | Jul 2025 |
| 18 | Guinn David E | Cleveland, OK 74020 | Oil & Gas Operator | Feb 2025 |