| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Phillips Oil Company | Casper, WY 82602 | Oil & Gas Operator | Sep 1986 |
| 2 | Phillips Petroleum Company | Houston, TX 77251 | Oil & Gas Operator | Mar 2013 |
| 3 | Prima Exploration, Inc. | Denver, CO 80206 | Oil & Gas Operator | Aug 2025 |
| 4 | Proven Petroleum, Inc. | Lakewood, CO 80228 | Oil & Gas Operator | Aug 2025 |