| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Camwest II LP | McKinney, TX 75070 | Oil & Gas Operator | Jul 2007 |
| 2 | Cardinal Petroleum Co. | Oil & Gas Operator | May 2004 | |
| 3 | Caroline Hunt Trust Estate | Oil & Gas Operator | Feb 1987 | |
| 4 | Champlin Petroleum Co. | Rock Springs, WY 82902 | Oil & Gas Operator | Mar 1991 |
| 5 | Chandler & Associates, Inc. | Denver, CO 80202 | Oil & Gas Operator | May 1997 |
| 6 | Clyde G. Kissinger | Oil Operator | Jun 1964 | |
| 7 | Clyde W. Jones | Oil Operator | Sep 2003 | |
| 8 | Cobra Oil & Gas Corporation | Wichita Falls, TX 76307 | Oil & Gas Operator | Dec 2024 |
| 9 | Condor Petroleum, Inc. | Denver, CO 80202 | Oil & Gas Operator | Jun 2019 |