| 1 | P & R Oil Company | Post, TX 79356 | Oil & Gas Operator | Apr 2024 |
| 2 | P O & G Operating LLC | Houston, TX 77057 | Oil & Gas Operator | Apr 2024 |
| 3 | Paladin Exploration Co., Inc. | Plano, TX 75093 | Oil & Gas Operator | Feb 1995 |
| 4 | Palmer Oil Properties | Post, TX 79356 | Oil & Gas Operator | Apr 2024 |
| 5 | Par Producing Company | Snyder, TX 79550 | Oil & Gas Operator | Jun 2017 |
| 6 | Parallel Petroleum Corporation | Midland, TX 79702 | Oil & Gas Operator | Jan 2010 |
| 7 | Parish, John R. | Andrews, TX 79714 | Oil & Gas Operator | Apr 2024 |
| 8 | Parker & Parsley Development Co. | Midland, TX 79702 | Oil & Gas Operator | May 1995 |
| 9 | Parker & Parsley Development L.P | Midland, TX 79702 | Oil & Gas Operator | Oct 2007 |
| 10 | Patrick Pet. Corp. Of Michigan | Houston, TX 77227 | Oil & Gas Operator | Aug 1995 |
| 11 | Patriot Production LLC | Southlake, TX 76092 | Oil & Gas Operator | Apr 2023 |
| 12 | Patterson Petroleum LLC | Snyder, TX 79550 | Oil & Gas Operator | Oct 2007 |
| 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 | Pecanderosa Petroleum, Inc. | MC Queeney, TX 78123 | Oil Operator | Feb 2023 |
| 16 | Ped Oil Corporation | Midland, TX 79702 | Oil & Gas Operator | Apr 2024 |
| 17 | Pedco Resources Company | Tulsa, OK 74170 | Oil & Gas Operator | Mar 2008 |
| 18 | Pedernales Production, LP | Houston, TX 77057 | Oil & Gas Operator | Mar 2022 |
| 19 | Pegasus Operating, Inc. | Coldspring, TX 77331 | Oil & Gas Operator | Apr 2024 |
| 20 | Permian Resources, Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 21 | Petra Oleum Corp. | Midland, TX 79702 | Oil & Gas Operator | Apr 2024 |
| 22 | Petrohawk Operating Company | Houston, TX 77056 | Oil & Gas Operator | Oct 2021 |
| 23 | Petroleum Technical Services Co. | Midland, TX 79707 | Oil & Gas Operator | Dec 2004 |
| 24 | Phillips 66 Company | Bartlesville, OK 74004 | Oil & Gas Operator | Aug 1997 |
| 25 | Pierce Junction Petroleum Inc. | Houston, TX 77002 | Oil & Gas Operator | May 2010 |
| 26 | Pioneer Natural Res. USA, Inc. | Irving, TX 75038 | Oil & Gas Operator | Apr 2024 |
| 27 | Plains Marketing LP | Cushing, OK 74023 | Oil & Gas Operator | Dec 2022 |
| 28 | Platinum Exploration Inc. | Midland, TX 79701 | Oil & Gas Operator | Apr 2024 |
| 29 | PMB Energy, Inc. | Snyder, TX 79549 | Oil & Gas Operator | Apr 2024 |
| 30 | Pogo Producing Company | Houston, TX 77002 | Oil & Gas Operator | Jan 2008 |
| 31 | Powell Properties, Inc. | Los Altos, CA 94024 | Oil & Gas Operator | Apr 2024 |
| 32 | PPC Operating Company LLC | Houston, TX 77279 | Oil & Gas Operator | Jul 2019 |
| 33 | Primrose Operating Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Jun 2007 |
| 34 | Prize Operating Company | Grapevine, TX 76051 | Oil & Gas Operator | Aug 2016 |
| 35 | Pruitt Oil & Gas | Decatur, TX 76234 | Oil & Gas Operator | Feb 2018 |
| 36 | Pure Resources, L.P. | Midland, TX 79701 | Oil & Gas Operator | Mar 2006 |