| 1 | Panhandle Oil & Gas Inc | Oklahoma City, OK 73112-5688 | Oil & Gas Operator | May 2007 |
| 2 | Parker & Parsley Development Co. | Midland, TX 79702 | Oil & Gas Operator | May 1995 |
| 3 | Parker & Parsley, Wpi Agent | Midland, TX 79701 | Oil & Gas Operator | Oct 1997 |
| 4 | Pedco Resources Company | Tulsa, OK 74170 | Oil & Gas Operator | Mar 2008 |
| 5 | Peden Energy | Lubbock, TX 79424 | Oil & Gas Operator | Dec 2004 |
| 6 | Peden Energy, Inc. | Wolfforth, TX 79382 | Oil & Gas Operator | Apr 2026 |
| 7 | Peden, Oren Inc. | Levelland, TX 79336 | Oil & Gas Operator | May 2001 |
| 8 | Pennzenergy Exp. & Prod., L.L.C. | Houston, TX 77210 | Oil & Gas Operator | Mar 2000 |
| 9 | Pennzoil Exploration & Production Co. | Carthage, TX 75633 | Oil & Gas Operator | Mar 2008 |
| 10 | Pennzoil Petroleum Company | Houston, TX 77252 | Oil & Gas Operator | Nov 1999 |
| 11 | Permian Resources, Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 12 | Petron Oil Company | Missouri City, TX 77489 | Oil & Gas Operator | Apr 2026 |
| 13 | Petrosource Production Co. L.P. | Midland, TX 79701 | Oil & Gas Operator | Nov 2007 |
| 14 | Petrosource Production Co., LLC | Midland, TX 79705 | Oil & Gas Operator | Apr 2026 |
| 15 | Phillips Petroleum Company | Houston, TX 77251 | Oil & Gas Operator | Mar 2013 |
| 16 | Phoenix Hydrocarbons Operating | Midland, TX 79702 | Oil & Gas Operator | Jun 2024 |
| 17 | Plains Production Inc | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 1995 |
| 18 | Prasad, Hari Production Co. | Midland, TX 79701 | Oil & Gas Operator | Apr 2026 |
| 19 | Probe Oil Company | Midland, TX 79710 | Oil & Gas Operator | Jul 2016 |
| 20 | Pure Resources, L.P. | Midland, TX 79701 | Oil & Gas Operator | Mar 2006 |
| 21 | Purvis Operating Co. | Midland, TX 79710 | Oil & Gas Operator | Apr 2026 |