| 1 | P.O.&G. Operating, LLC | Houston, TX 77057 | Oil & Gas Operator | Dec 2024 |
| 2 | Panhandle Producing Company | San Antonio, TX 78205 | Oil & Gas Operator | Oct 1993 |
| 3 | Pantera Energy Company | Amarillo, TX 79101 | Oil & Gas Operator | Dec 2024 |
| 4 | Parallel Energy LP | Tulsa, OK 74136 | Oil & Gas Operator | Dec 2015 |
| 5 | Petro-Smith Operating LLC | Houston, TX 77010 | Oil & Gas Operator | Dec 2024 |
| 6 | Petroleum Inc | Wichita, KS 67202 | Oil & Gas Operator | Oct 2021 |
| 7 | Pioneer Natural Res. USA, Inc. | Irving, TX 75038 | Oil & Gas Operator | Dec 2024 |
| 8 | Pioneer Natural Resources USA Inc | Irving, TX 75039 | Oil & Gas Operator | Aug 2024 |
| 9 | Plains Production Inc | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 1995 |
| 10 | Plains Resources Inc. | Houston, TX 77002 | Oil & Gas Operator | Jul 2008 |
| 11 | Plumley, M. C. & Associates | Borger, TX 79008 | Oil & Gas Operator | Dec 2024 |
| 12 | Pogo Panhandle 2004, L.P. | Houston, TX 77002 | Oil & Gas Operator | Oct 2017 |
| 13 | Pogo Producing Company LLC | Houston, TX 77002 | Oil & Gas Operator | Sep 2024 |
| 14 | Polaris Operating, LLC | Dallas, TX 75225 | Oil & Gas Operator | Dec 2024 |
| 15 | Ponderosa TX Operating LLC | Stinnett, TX 79083 | Oil & Gas Operator | Dec 2024 |
| 16 | Presidio Petroleum LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2024 |