| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Chandler Energy LLC | Denver, CO 80202 | Oil & Gas Operator | Jan 2009 |
| 2 | CMS Oil And Gas Company | Jackson, MI 49201 | Oil & Gas Operator | Oct 2002 |
| 3 | Collins C R And Collins F Dba Collins Brothers Oil | Oil & Gas Operator | Jul 2008 | |
| 4 | Conoco Inc. | Houston, TX 77252 | Oil & Gas Operator | Mar 2015 |
| 5 | Core Antrim Company LLC | Gas Operator | Aug 2025 | |
| 6 | Core Energy LLC | Oil & Gas Operator | Aug 2025 | |
| 7 | Cronus Exploration Co LLC | Oil & Gas Operator | Jul 2025 |