| 1 | P.B. Blue Dot Properties | Wexford, PA 15090 | Oil & Gas Operator | Dec 2024 |
| 2 | Paragon Oil & Gas, LLC | Aledo, TX 76008 | Oil & Gas Operator | Dec 2024 |
| 3 | Parker & Parsley Development L.P | Midland, TX 79702 | Oil & Gas Operator | Oct 2007 |
| 4 | Patterson Petroleum, Inc. | Snyder, TX 79550 | Oil & Gas Operator | Feb 2000 |
| 5 | Patton Exploration, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Dec 2024 |
| 6 | Patton, E. N. Oil Company, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Dec 2024 |
| 7 | Petrotex, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Aug 2003 |
| 8 | PG&E Resources Company | Houston, TX 77042 | Oil & Gas Operator | May 1995 |
| 9 | Phillips Petroleum Company | Houston, TX 77251 | Oil & Gas Operator | Mar 2013 |
| 10 | Phoenix Petrocorp, Inc. | McKinney, TX 75070 | Oil & Gas Operator | Sep 2024 |
| 11 | Pioneer Natural Res. USA, Inc. | Irving, TX 75038 | Oil & Gas Operator | Dec 2024 |
| 12 | Plumb Resources, Inc. | Houston, TX 77096 | Oil & Gas Operator | Jun 1998 |
| 13 | Pogo Producing Company | Houston, TX 77002 | Oil & Gas Operator | Jan 2008 |
| 14 | Pogo Producing Company LLC | Houston, TX 77002 | Oil & Gas Operator | Sep 2024 |
| 15 | Polk Petroleum, Inc. | Abilene, TX 79604 | Oil & Gas Operator | May 2024 |
| 16 | PPC Operating Company LLC | Houston, TX 77279 | Oil & Gas Operator | Jul 2019 |
| 17 | Primrose Operating Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Jun 2007 |