| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | C & G Oil Compan | Oil & Gas Operator | Dec 1989 | |
| 2 | C & J Production LLC | Marion, KS 66861 | Oil & Gas Operator | Feb 2025 |
| 3 | Cardiff Resource | Gas Operator | Sep 1994 | |
| 4 | Cascade Oil Comp | Oil & Gas Operator | Dec 1994 | |
| 5 | Chisholm Trail Resources Inc | Hennessey, OK 73742 | Oil & Gas Operator | Nov 2002 |
| 6 | CK Oil & Gas LLC | Herington, KS 67449 | Oil & Gas Operator | Mar 2025 |
| 7 | Clifford Resourc | Oil & Gas Operator | Mar 1989 | |
| 8 | Cyclone Petroleu | Oil & Gas Operator | Nov 1995 | |
| 9 | Cyclone Petroleum, Incorporated | Jenks, OK 74037 | Oil & Gas Operator | Sep 2025 |