| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | General Oil Comp | Oil & Gas Operator | Nov 1993 | |
| 2 | Glacier Petroleu | Oil & Gas Operator | Nov 1995 | |
| 3 | GLB Exploration Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Feb 2026 |
| 4 | Gra Ex, LLC | Kingman, KS 67068 | Oil & Gas Operator | Nov 2025 |
| 5 | Grace Petroleum Corp. | Tulsa, OK 74103 | Oil & Gas Operator | Oct 1997 |
| 6 | Graves Drilling | Oil & Gas Operator | Sep 1995 | |
| 7 | Graves Drilling Co., Inc. | Wichita, KS 67208 | Oil & Gas Operator | Dec 2025 |
| 8 | Green Oper Compa | Gas Operator | Jan 1970 | |
| 9 | Green Operating Company Inc | Tulsa, OK 74135 | Oil & Gas Operator | Dec 2025 |
| 10 | Griffin, Charles N. | Pratt, KS 67124 | Oil & Gas Operator | Dec 2025 |