| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Par Exploration Co | Oil & Gas Operator | Oct 1986 | |
| 2 | Pete Caldwell Drilling Co.,Inc | Oil & Gas Operator | Aug 1991 | |
| 3 | Petroleum Exchange | Oil & Gas Operator | Oct 1997 | |
| 4 | Phillberg Oil Company | Oil Operator | Mar 2014 | |
| 5 | Phoenix Drilling & Exploration | Oil & Gas Operator | Jun 1982 | |
| 6 | Phoenix-Vi-Roi | Oil & Gas Operator | Mar 1986 | |
| 7 | Primos Production | Oil & Gas Operator | Dec 2023 | |
| 8 | Proex Energy Management, L.L.C. | Spring, TX 77386 | Oil & Gas Operator | Apr 2024 |