| 1 | P. R. L. Oil Company | Albany, TX 76430 | Oil & Gas Operator | Apr 2008 |
| 2 | P.B. Blue Dot Properties | Wexford, PA 15090 | Oil & Gas Operator | Feb 2026 |
| 3 | Palmer Tank Trucks, Inc. | Olney, TX 76374 | Oil & Gas Operator | Mar 2008 |
| 4 | Palmer, John LLC | Megargel, TX 76370 | Oil & Gas Operator | Feb 2026 |
| 5 | Panamerican Operating Inc | Dallas, TX 75219 | Oil & Gas Operator | Feb 2026 |
| 6 | Paragon Oil & Gas, LLC | Aledo, TX 76008 | Oil & Gas Operator | Feb 2026 |
| 7 | Pardue Energy Inc. | Dallas, TX 75230 | Oil & Gas Operator | Dec 2015 |
| 8 | Pardue Oil | Breckenridge, TX 76424 | Oil & Gas Operator | Sep 2006 |
| 9 | Pardue Oil, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Feb 2026 |
| 10 | Pardue, William M., III | Fort Worth, TX 76116 | Oil & Gas Operator | Dec 1996 |
| 11 | Parker Energy Company | Breckenridge, TX 76424 | Oil & Gas Operator | Feb 2026 |
| 12 | Paschal Petroleum, Inc. | Dallas, TX 75380 | Oil & Gas Operator | Apr 1994 |
| 13 | Patterson Petroleum LP | Snyder, TX 79550 | Oil & Gas Operator | Mar 2008 |
| 14 | Patterson Petroleum, Inc. | Snyder, TX 79550 | Oil & Gas Operator | Feb 2000 |
| 15 | Payne-Johnston | Tyler, TX 75702 | Oil & Gas Operator | Nov 1996 |
| 16 | Pennant Dev. And Prod., LLC | Midland, TX 79702 | Oil Operator | Feb 2026 |
| 17 | Pennzoil Exploration & Production Co. | Carthage, TX 75633 | Oil & Gas Operator | Mar 2008 |
| 18 | Pennzoil Petroleum Company | Houston, TX 77252 | Oil & Gas Operator | Nov 1999 |
| 19 | Permian Resources, Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 20 | Perpetual Energy LLC | Grapevine, TX 76051 | Oil & Gas Operator | Aug 2012 |
| 21 | Peterson Oil And Gas LLC | Wichita Falls, TX 76310 | Oil & Gas Operator | Feb 2026 |
| 22 | Petex | Breckenridge, TX 76424 | Oil & Gas Operator | Feb 2026 |
| 23 | Petrocorp Acquisition Company | Tulsa, OK 74121 | Oil & Gas Operator | Dec 2002 |
| 24 | Petrocorp Incorporated,A TX.Corp | Tulsa, OK 74170 | Oil & Gas Operator | Apr 2005 |
| 25 | Petroleum Capital, L.C. | Dallas, TX 75367 | Oil & Gas Operator | Feb 2026 |
| 26 | Pfed Operating | Keller, TX 76248 | Oil Operator | Feb 2026 |
| 27 | Pharaoh Oil & Gas, Inc. | MC Camey, TX 79752 | Oil & Gas Operator | Feb 2026 |
| 28 | Pickens Company, Inc., The | Dallas, TX 75225 | Oil & Gas Operator | Jan 2025 |
| 29 | Pitcock, Inc. | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 30 | Pittencrieff America Inc | Abilene, TX 79608 | Oil & Gas Operator | Feb 2003 |
| 31 | Plains Petroleum Operating Co | Denver, CO 80202 | Oil & Gas Operator | Dec 2014 |
| 32 | Plains Production Inc | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 1995 |
| 33 | Pobres Incorporated | Wichita Falls, TX 76308 | Oil & Gas Operator | Mar 2008 |
| 34 | Pogue, Randall R. | Ada, OK 74820 | Oil & Gas Operator | May 2003 |
| 35 | Powell-McCarroll Partnership | Sachse, TX 75048 | Oil & Gas Operator | Feb 2026 |
| 36 | Power, Scott | Breckenridge, TX 76424 | Oil & Gas Operator | Sep 1997 |
| 37 | Prensorus Energy, LLC | Abilene, TX 79604 | Oil & Gas Operator | Feb 2026 |
| 38 | Prickett, Jimmy | Wichita Falls, TX 76308 | Oil Operator | Feb 2002 |
| 39 | Probe Offshore, LLC | Houston, TX 77002 | Oil & Gas Operator | Feb 2009 |
| 40 | Putnam, Joe Oil Company | Abilene, TX 79606 | Oil & Gas Operator | Feb 2026 |
| 41 | PV Oil Services, LLC | Abilene, TX 79601 | Oil & Gas Operator | Feb 2026 |
| 42 | Pyramid Energy Inc | San Antonio, TX 78216 | Oil & Gas Operator | Feb 2012 |
| 43 | Pyramid Production Co. | Abilene, TX 79608 | Oil & Gas Operator | Jun 1994 |