| 1 | P.S.N. Petroleum, Inc. | San Antonio, TX 78233 | Oil & Gas Operator | Apr 2024 |
| 2 | Pantano Energy | San Antonio, TX 78258 | Oil & Gas Operator | Jul 1999 |
| 3 | Patterson Energy Corporation | Dallas, TX 75205 | Oil & Gas Operator | Apr 2024 |
| 4 | Patton Exploration, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Apr 2024 |
| 5 | Pax Petroleum Corporation | La Jolla, CA 92037 | Oil & Gas Operator | Mar 2008 |
| 6 | Pearl, Bill H. Productions, Inc. | Corpus Chrsti, TX 78460 | Oil & Gas Operator | Apr 2024 |
| 7 | Penrod Oil Company Of Texas, Inc | Milano, TX 76556 | Oil & Gas Operator | Apr 2024 |
| 8 | Plains Petroleum Operating Co | Denver, CO 80202 | Oil & Gas Operator | Dec 2014 |
| 9 | Precise Development, Inc. | Austin, TX 78709 | Oil & Gas Operator | May 2005 |
| 10 | Pride Energy Company | Tulsa, OK 74170 | Oil & Gas Operator | Apr 2024 |
| 11 | Production Resources, Inc. | Castroville, TX 78009 | Oil & Gas Operator | Apr 2024 |
| 12 | Progas Properties, Inc. | New Braunfels, TX 78132 | Oil & Gas Operator | Apr 2024 |