| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Pacific Gas And Electric Company | Gas Operator | Oct 2025 | |
| 2 | Pacific Inland Operating Corporation | Gas Operator | Dec 1993 | |
| 3 | Petro-Lewis Corp. | Oil & Gas Operator | Feb 1994 | |
| 4 | Petrogulf Corporation | Denver, CO 80202 | Oil & Gas Operator | Dec 2025 |
| 5 | Phillips Petroleum Company | Houston, TX 77251 | Oil & Gas Operator | Mar 2013 |
| 6 | Prima Oil & Gas Company | Denver, CO 80202 | Gas Operator | Sep 1998 |
| 7 | Princeton Natural Gas LLC | Gas Operator | Sep 2025 |