| 1 | Pablo Energy, Inc. | Pampa, TX 79065 | Oil & Gas Operator | Dec 2005 |
| 2 | Pactola Development Co | Tulsa, OK 74159 | Oil & Gas Operator | Sep 2004 |
| 3 | Pangea Corporation | Allen, TX 75013 | Oil & Gas Operator | Mar 2025 |
| 4 | Parallel Petroleum Corporation | Midland, TX 79702 | Oil & Gas Operator | Jan 2010 |
| 5 | Parish, John R. | Andrews, TX 79714 | Oil & Gas Operator | Mar 2025 |
| 6 | Parker & Parsley Development Co. | Midland, TX 79702 | Oil & Gas Operator | May 1995 |
| 7 | Parker & Parsley Development L.P | Midland, TX 79702 | Oil & Gas Operator | Oct 2007 |
| 8 | Parker & Parsley Producing LP | Midland, TX 79702 | Oil & Gas Operator | Oct 1997 |
| 9 | Parsley Energy Operations, LLC | Irving, TX 75038 | Oil & Gas Operator | Jan 2021 |
| 10 | Pathfinder Exploration LLC | Norman, OK 73069-8516 | Gas Operator | Aug 2003 |
| 11 | Patrick Pet. Corp. Of Michigan | Houston, TX 77227 | Oil & Gas Operator | Aug 1995 |
| 12 | Patriot Resources, Inc. | Midland, TX 79701 | Oil & Gas Operator | Oct 2017 |
| 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 | Pbex Operations, LLC | Midland, TX 79702 | Oil & Gas Operator | Mar 2025 |
| 16 | Ped Oil Corporation | Midland, TX 79702 | Oil & Gas Operator | Mar 2025 |
| 17 | Pennzenergy Exp. & Prod., L.L.C. | Houston, TX 77210 | Oil & Gas Operator | Mar 2000 |
| 18 | Pennzoil Exploration & Production Co. | Carthage, TX 75633 | Oil & Gas Operator | Mar 2008 |
| 19 | Pennzoil Petroleum Company | Houston, TX 77252 | Oil & Gas Operator | Nov 1999 |
| 20 | Permian Resources, Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 21 | Permian West Corp. | Odessa, TX 79762 | Oil & Gas Operator | Mar 2025 |
| 22 | Perry Producing Company, Inc. | Ackerly, TX 79713 | Oil & Gas Operator | Mar 2025 |
| 23 | Petex | Breckenridge, TX 76424 | Oil & Gas Operator | Mar 2025 |
| 24 | Petrohawk Operating Company | Houston, TX 77056 | Oil & Gas Operator | Oct 2021 |
| 25 | Petrolegacy Energy II, LLC | Denver, CO 80202 | Oil & Gas Operator | Jun 2023 |
| 26 | Petroplex Energy Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2025 |
| 27 | Petroplex Equipment, Inc. | Midland, TX 79701 | Oil & Gas Operator | May 2019 |
| 28 | Petx Operating LLC | Sheridan, WY 82801 | Oil Operator | Mar 2025 |
| 29 | PG&E Resources Company | Houston, TX 77042 | Oil & Gas Operator | May 1995 |
| 30 | Phillips 66 Company | Bartlesville, OK 74004 | Oil & Gas Operator | Aug 1997 |
| 31 | Phillips Petroleum Company | Houston, TX 77251 | Oil & Gas Operator | Mar 2013 |
| 32 | Phoenix Hydrocarbons Operating | Midland, TX 79702 | Oil & Gas Operator | Jun 2024 |
| 33 | Piedra Operating, LLC | Denver, CO 80202 | Oil & Gas Operator | May 2023 |
| 34 | Pinon Operating, LLC | Midland, TX 79702 | Oil & Gas Operator | Sep 2023 |
| 35 | Pioneer Natural Res. USA, Inc. | Irving, TX 75038 | Oil & Gas Operator | Mar 2025 |
| 36 | Pioneer Resources Producing, L.P | Irving, TX 75039 | Oil & Gas Operator | Feb 2001 |
| 37 | Pitts Energy Co. | Midland, TX 79707 | Oil & Gas Operator | Mar 2025 |
| 38 | Placid Oil Company | Houston, TX 77227 | Oil & Gas Operator | Mar 2008 |
| 39 | Plains Marketing LP | Cushing, OK 74023 | Oil & Gas Operator | Dec 2022 |
| 40 | Plains Petroleum Operating Co | Denver, CO 80202 | Oil & Gas Operator | Dec 2014 |
| 41 | Pogo Producing Company | Houston, TX 77002 | Oil & Gas Operator | Jan 2008 |
| 42 | PPC Operating Company LLC | Houston, TX 77279 | Oil & Gas Operator | Jul 2019 |
| 43 | Prasad, Hari Production Co. | Midland, TX 79701 | Oil & Gas Operator | Mar 2025 |
| 44 | Prize Operating Company | Grapevine, TX 76051 | Oil & Gas Operator | Aug 2016 |
| 45 | Proven Reserves Management, Inc. | Dallas, TX 75370 | Oil & Gas Operator | Dec 2024 |
| 46 | Pure Resources, L.P. | Midland, TX 79701 | Oil & Gas Operator | Mar 2006 |
| 47 | Purvis Operating Co. | Midland, TX 79710 | Oil & Gas Operator | Mar 2025 |
| 48 | Purvis, J. H. | Midland, TX 79702 | Oil & Gas Operator | Dec 1994 |