| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | G L M Company | Oil Operator | Sep 2025 | |
| 2 | Geodessa Corpora | Oil Operator | Jul 1984 | |
| 3 | Geoson Oil Compa | Oil Operator | Jun 1984 | |
| 4 | Gerald Michaelis Oil | Oil Operator | Sep 2025 | |
| 5 | Gideon Oil Operations | Oil Operator | Jul 2025 | |
| 6 | Ginther Oil, Inc. | Russell, KS 67665 | Oil Operator | Nov 2019 |
| 7 | Glacier Petroleu | Oil & Gas Operator | Nov 1995 | |
| 8 | Gore Oil Company | Wichita, KS 67202 | Oil & Gas Operator | Sep 2025 |
| 9 | Grady Bolding Corporation | Ellinwood, KS 67526 | Oil & Gas Operator | Sep 2025 |
| 10 | Graham-Michaelis | Oil & Gas Operator | Nov 1996 | |
| 11 | Graham-Michaelis Corporation | Wichita, KS 67201 | Oil & Gas Operator | Dec 2010 |
| 12 | Grand Mesa Operating Company | Wichita, KS 67206 | Oil & Gas Operator | Dec 2025 |
| 13 | Great Bend Oil P | Oil Operator | Jun 1991 | |
| 14 | Griggs Oil Incor | Oil & Gas Operator | May 1994 | |
| 15 | Guthrie Oil Comp | Oil & Gas Operator | Dec 1994 |