| 1 | Paloma Natural Gas, LLC | Houston, TX 77002 | Oil & Gas Operator | Jun 2024 |
| 2 | Pan-Ok Production Company | | Oil & Gas Operator | Jul 2024 |
| 3 | Panenergy La Intrastate Co | | Oil Operator | Mar 2000 |
| 4 | Par Minerals Corporation | Shreveport, LA 71101 | Oil & Gas Operator | Dec 2024 |
| 5 | Pedernales Petroleum Operating, LLC | | Oil & Gas Operator | Jun 2024 |
| 6 | Pelico Pipeline, LLC | | Oil Operator | Jun 2024 |
| 7 | Pennzoil Exploration & Production Co. | Carthage, TX 75633 | Oil & Gas Operator | Mar 2008 |
| 8 | Peoples Energy Prod.-TX, L.P. | Houston, TX 77002 | Oil & Gas Operator | Sep 2007 |
| 9 | Petro-Chem Operating Company, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Dec 2024 |
| 10 | Petrofunds, Inc & Sunny South | | Oil & Gas Operator | Feb 1984 |
| 11 | Petrofunds, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Jun 1996 |
| 12 | Petrohawk Operating Company | Houston, TX 77056 | Oil & Gas Operator | Oct 2021 |
| 13 | Phillips Petroleum Company | Houston, TX 77251 | Oil & Gas Operator | Mar 2013 |
| 14 | Pinnacle Operating Company, Inc. | Shreveport, LA 71135 | Oil & Gas Operator | Dec 2024 |
| 15 | Placid Oil Company | Houston, TX 77227 | Oil & Gas Operator | Mar 2008 |
| 16 | Plantation Operating, LLC | Houston, TX 77041 | Oil & Gas Operator | Nov 2011 |
| 17 | Premier Natural Resources II,LLC | Tulsa, OK 74105 | Oil & Gas Operator | Feb 2015 |