| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Camio Enterprises, LLC | Augusta, KS 67010 | Oil Operator | Jun 2025 |
| 2 | Carr Exploration | Oil & Gas Operator | Sep 1993 | |
| 3 | Catron Oil Div - | Oil Operator | Aug 1989 | |
| 4 | Catron Oil Division | Oil Operator | Feb 2000 | |
| 5 | Central Crude Corp. | Wichita, KS 67206 | Oil Operator | Mar 2014 |
| 6 | Chevron U S A In | Oil & Gas Operator | Sep 2000 | |
| 7 | CK Oil & Gas LLC | Herington, KS 67449 | Oil & Gas Operator | Mar 2025 |
| 8 | Coastal Oil & Ga | Oil & Gas Operator | Oct 1996 | |
| 9 | Continental Ener | Oil & Gas Operator | Dec 1996 | |
| 10 | Cook Operating C | Oil Operator | May 1987 | |
| 11 | Cook, James A. | Augusta, KS 67010 | Oil Operator | Jul 1997 |
| 12 | Cortam, Inc. | Augusta, KS 67010 | Oil Operator | Dec 2024 |
| 13 | Crowe Drilling C | Oil & Gas Operator | May 1995 |