| 1 | P&P Industries, Inc. | Austin, TX 78737 | Oil & Gas Operator | Dec 2002 |
| 2 | P. L. O. | Boerne, TX 78006 | Oil & Gas Operator | Jun 2016 |
| 3 | P. R. L. Oil Company | Albany, TX 76430 | Oil & Gas Operator | Apr 2008 |
| 4 | P.B. Blue Dot Properties | Wexford, PA 15090 | Oil & Gas Operator | Dec 2024 |
| 5 | P.I.D. Drilling Inc | Clyde, TX 79510 | Oil & Gas Operator | Dec 2024 |
| 6 | Pace Operating | Abilene, TX 79608 | Oil & Gas Operator | Dec 2024 |
| 7 | Paradigm Petroleum Corporation | Abilene, TX 79605 | Oil & Gas Operator | Dec 2024 |
| 8 | Paragon Corporation | Abilene, TX 79604 | Oil & Gas Operator | Dec 2024 |
| 9 | Pardue Energy Inc. | Dallas, TX 75230 | Oil & Gas Operator | Dec 2015 |
| 10 | Pardue Oil | Breckenridge, TX 76424 | Oil & Gas Operator | Sep 2006 |
| 11 | Pardue Oil, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 2024 |
| 12 | Partech Investments LLC | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 2024 |
| 13 | Patriot Operating Company, Inc. | Houston, TX 77008 | Oil & Gas Operator | Sep 2003 |
| 14 | Patton Exploration, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Dec 2024 |
| 15 | Pendergraft Oil Co. | Lueders, TX 79533 | Oil & Gas Operator | Jan 1998 |
| 16 | Penntex Resources, L.P. | State College, PA 16803 | Oil & Gas Operator | Mar 2016 |
| 17 | Petex | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 2024 |
| 18 | Petrocorp Acquisition Company | Tulsa, OK 74121 | Oil & Gas Operator | Dec 2002 |
| 19 | Petrocorp Incorporated,A TX.Corp | Tulsa, OK 74170 | Oil & Gas Operator | Apr 2005 |
| 20 | Petrosource Energy Corporation | Fort Worth, TX 76112 | Oil & Gas Operator | Dec 2024 |
| 21 | Phillips 66 Company | Bartlesville, OK 74004 | Oil & Gas Operator | Aug 1997 |
| 22 | Pinon Petroleum, Inc. | San Angelo, TX 76903 | Oil & Gas Operator | Apr 2004 |
| 23 | Pittencrieff America Inc | Abilene, TX 79608 | Oil & Gas Operator | Feb 2003 |
| 24 | Plains Production Inc | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 1995 |
| 25 | Plantation Operating, LLC | Houston, TX 77041 | Oil & Gas Operator | Nov 2011 |
| 26 | Pony Oil Company | Borger, TX 79008 | Oil & Gas Operator | Jul 2001 |
| 27 | Post Oak Operating, LLC | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 2024 |
| 28 | Powell-McCarroll Partnership | Sachse, TX 75048 | Oil & Gas Operator | Dec 2024 |
| 29 | Prentice Petroleum, Inc. | Abilene, TX 79605 | Oil & Gas Operator | Sep 1994 |
| 30 | Prickly Pair Production | Albany, TX 76430 | Oil & Gas Operator | Dec 2024 |
| 31 | Primexx Operating Corporation | Dallas, TX 75206 | Oil & Gas Operator | Mar 2024 |
| 32 | Primrose Operating Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Jun 2007 |
| 33 | Pro Oil & Gas Inc | Frankfort, IL 60423 | Oil & Gas Operator | May 2014 |
| 34 | Probe Offshore, LLC | Houston, TX 77002 | Oil & Gas Operator | Feb 2009 |
| 35 | Pryor, Curtis | Lubbock, TX 79424 | Oil & Gas Operator | Dec 1998 |
| 36 | PV Oil Services, LLC | Abilene, TX 79601 | Oil & Gas Operator | Dec 2024 |