| 1 | P.O.&G. Operating, LLC | Houston, TX 77057 | Oil & Gas Operator | Dec 2024 |
| 2 | Paladin Exploration Co., Inc. | Plano, TX 75093 | Oil & Gas Operator | Feb 1995 |
| 3 | Paloma Natural Gas, LLC | Houston, TX 77002 | Oil & Gas Operator | Jun 2024 |
| 4 | Pan Western Energy Corporation | Tulsa, OK 74114 | Oil & Gas Operator | Dec 2024 |
| 5 | Panamerican Operating Inc | Dallas, TX 75219 | Oil & Gas Operator | Dec 2024 |
| 6 | Panhandle Oil & Gas Inc | Oklahoma City, OK 73112-5688 | Oil & Gas Operator | May 2007 |
| 7 | Pantera Energy Company | Amarillo, TX 79101 | Oil & Gas Operator | Dec 2024 |
| 8 | Par Producing Company | Snyder, TX 79550 | Oil & Gas Operator | Jun 2017 |
| 9 | Parallel Petroleum Corporation | Midland, TX 79702 | Oil & Gas Operator | Jan 2010 |
| 10 | Parker & Parsley Development Co. | Midland, TX 79702 | Oil & Gas Operator | May 1995 |
| 11 | Parker & Parsley Development L.P | Midland, TX 79702 | Oil & Gas Operator | Oct 2007 |
| 12 | Patoil Corp. | San Antonio, TX 78205 | Oil & Gas Operator | Aug 2003 |
| 13 | Patrick Pet. Corp. Of Michigan | Houston, TX 77227 | Oil & Gas Operator | Aug 1995 |
| 14 | Patriot Production LLC | Southlake, TX 76092 | Oil & Gas Operator | Apr 2023 |
| 15 | Patriot Resources, Inc. | Midland, TX 79701 | Oil & Gas Operator | Oct 2017 |
| 16 | Patterson Petroleum LLC | Snyder, TX 79550 | Oil & Gas Operator | Oct 2007 |
| 17 | Patterson Petroleum LP | Snyder, TX 79550 | Oil & Gas Operator | Mar 2008 |
| 18 | Patterson Petroleum, Inc. | Snyder, TX 79550 | Oil & Gas Operator | Feb 2000 |
| 19 | Ped Oil Corporation | Midland, TX 79702 | Oil & Gas Operator | Dec 2024 |
| 20 | Pedernales Production, LP | Houston, TX 77057 | Oil & Gas Operator | Mar 2022 |
| 21 | Pennzenergy Exp. & Prod., L.L.C. | Houston, TX 77210 | Oil & Gas Operator | Mar 2000 |
| 22 | Pennzoil Exploration & Production Co. | Carthage, TX 75633 | Oil & Gas Operator | Mar 2008 |
| 23 | Pennzoil Petroleum Company | Houston, TX 77252 | Oil & Gas Operator | Nov 1999 |
| 24 | Permian Resources, Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 25 | Permian West Corp. | Odessa, TX 79762 | Oil & Gas Operator | Dec 2024 |
| 26 | Perry Producing Company, Inc. | Ackerly, TX 79713 | Oil & Gas Operator | Dec 2024 |
| 27 | Petex | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 2024 |
| 28 | Petra Oleum Corp. | Midland, TX 79702 | Oil & Gas Operator | Dec 2024 |
| 29 | Petro Hi-Tech, Inc. | Pasadena, TX 77505 | Oil & Gas Operator | Feb 2008 |
| 30 | Petro-West Corporation | Lubbock, TX 79404 | Oil & Gas Operator | Oct 2001 |
| 31 | Petroleum Inc | Wichita, KS 67202 | Oil & Gas Operator | Oct 2021 |
| 32 | Petromining, Inc. | Plano, TX 75026 | Oil & Gas Operator | Dec 2024 |
| 33 | Petroplex Energy Inc. | Midland, TX 79702 | Oil & Gas Operator | Dec 2024 |
| 34 | Petroplex Equipment, Inc. | Midland, TX 79701 | Oil & Gas Operator | May 2019 |
| 35 | Petrotex, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Aug 2003 |
| 36 | Phillips Petroleum Company | Houston, TX 77251 | Oil & Gas Operator | Mar 2013 |
| 37 | Phoenix Hydrocarbons Operating | Midland, TX 79702 | Oil & Gas Operator | Jun 2024 |
| 38 | Pie Operating, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Dec 2024 |
| 39 | Pioneer Natural Res. USA, Inc. | Irving, TX 75038 | Oil & Gas Operator | Dec 2024 |
| 40 | Plains Marketing LP | Cushing, OK 74023 | Oil & Gas Operator | Dec 2022 |
| 41 | Plains Petroleum Operating Co | Denver, CO 80202 | Oil & Gas Operator | Dec 2014 |
| 42 | Platinum Exploration Inc. | Midland, TX 79701 | Oil & Gas Operator | Dec 2024 |
| 43 | Pogo Panhandle 2004, L.P. | Houston, TX 77002 | Oil & Gas Operator | Oct 2017 |
| 44 | PPC Operating Company LLC | Houston, TX 77279 | Oil & Gas Operator | Jul 2019 |
| 45 | Prime Operating Company | Houston, TX 77024 | Oil & Gas Operator | Dec 2024 |
| 46 | Primexx Operating Corporation | Dallas, TX 75206 | Oil & Gas Operator | Mar 2024 |
| 47 | Prize Operating Company | Grapevine, TX 76051 | Oil & Gas Operator | Aug 2016 |
| 48 | Proline Energy Resources Inc | Sugar Land, TX 77479 | Oil & Gas Operator | Dec 2024 |
| 49 | Pure Resources, L.P. | Midland, TX 79701 | Oil & Gas Operator | Mar 2006 |
| 50 | Purvis Operating Co. | Midland, TX 79710 | Oil & Gas Operator | Dec 2024 |