| 1 | Palmer Petroleum Inc. | Shreveport, LA 71105 | Oil & Gas Operator | Jun 2025 |
| 2 | Panther Creek Resources, LLC | Denver, CO 80202 | Oil & Gas Operator | May 2012 |
| 3 | Patara Andover I LLC | Houston, TX 77002 | Oil & Gas Operator | Feb 2014 |
| 4 | Patara Oil & Gas LLC | Dallas, TX 75219 | Oil & Gas Operator | Mar 2018 |
| 5 | Patterson, Ben M., Jr. | San Antonio, TX 78216 | Oil & Gas Operator | Mar 2003 |
| 6 | Peak Energy Corporation | Plano, TX 75093 | Oil & Gas Operator | Oct 2018 |
| 7 | Petralis Energy Resources, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Oct 2025 |
| 8 | Petro-Guard Company, Inc. | Houston, TX 77057 | Oil & Gas Operator | Nov 2014 |
| 9 | Plains Marketing, LP | Cushing, OK 74023 | Oil Operator | Jan 2012 |
| 10 | Plains Production Inc | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 1995 |
| 11 | Powco Oil & Gas Co. | Athens, TX 75751 | Oil & Gas Operator | Feb 1995 |
| 12 | Powell, Gene Investments, Inc. | Longview, TX 75608 | Oil & Gas Operator | Apr 2024 |
| 13 | Prime Natural Resources, Inc. | Houston, TX 77042 | Oil & Gas Operator | Jun 2007 |
| 14 | Princess Three Operating, LLC | Henderson, TX 75653 | Oil & Gas Operator | Oct 2025 |
| 15 | Prudent Resources LLC | Houston, TX 77042 | Oil & Gas Operator | Oct 2025 |
| 16 | Psi Production, Inc. | Tyler, TX 75702 | Gas Operator | Jan 1994 |
| 17 | PXP Gulf Coast Inc. | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 18 | PXP Texas Inc. | Houston, TX 77002 | Oil & Gas Operator | Feb 2007 |