| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Par Petroleum In | Oil & Gas Operator | Jun 1993 | |
| 2 | Par Petroleum, Inc. | Liberal, KS 67901 | Gas Operator | Dec 2009 |
| 3 | Permian Reef, LLC | Greenwood, IN 46143 | Gas Operator | Mar 2011 |
| 4 | Petro-Lewis Corp. | Oil & Gas Operator | Feb 1994 | |
| 5 | Pioneer Natural Resources USA Inc | Irving, TX 75039 | Oil & Gas Operator | Jun 2025 |
| 6 | Plains Petroleum Operating Co. | Denver, CO 80202 | Oil & Gas Operator | Dec 2014 |
| 7 | Plateau Operating Corporation | Nashville, TN 37205 | Gas Operator | Jun 2025 |
| 8 | Prairie Gas Operating, LLC | Tulsa, OK 74101 | Gas Operator | Dec 2019 |