| 1 | P & A Operating, Inc. | Houston, TX 77095 | Oil & Gas Operator | Mar 2025 |
| 2 | P & P Petroleum | Midland, TX 79706 | Oil & Gas Operator | Oct 2002 |
| 3 | P.O.&G. Operating, LLC | Houston, TX 77057 | Oil & Gas Operator | Mar 2025 |
| 4 | P4 Operating, LLC | Midland, TX 79710 | Oil & Gas Operator | Mar 2025 |
| 5 | Pa Prospect LLC | Columbus, MT 59019 | Oil & Gas Operator | Jul 2020 |
| 6 | Paladin Petroleum III, L.L.C. | Austin, TX 78746 | Oil & Gas Operator | Mar 2025 |
| 7 | Palmer, J. M. | Keller, TX 76244 | Oil & Gas Operator | Aug 2009 |
| 8 | Par Minerals Corporation | Shreveport, LA 71101 | Oil & Gas Operator | Mar 2025 |
| 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 | Patriot Production LLC | Southlake, TX 76092 | Oil & Gas Operator | Apr 2023 |
| 13 | Patterson Petroleum LLC | Snyder, TX 79550 | Oil & Gas Operator | Oct 2007 |
| 14 | Patterson Petroleum LP | Snyder, TX 79550 | Oil & Gas Operator | Mar 2008 |
| 15 | Pecanosa Oil & Cattle Co. | New Braunfels, TX 78132 | Gas Operator | May 2013 |
| 16 | Pecos Operating Company, LLC | Midland, TX 79701 | Oil & Gas Operator | Jun 2021 |
| 17 | Pedernales Production, LP | Houston, TX 77057 | Oil & Gas Operator | Mar 2022 |
| 18 | Pennzenergy Exp. & Prod., L.L.C. | Houston, TX 77210 | Oil & Gas Operator | Mar 2000 |
| 19 | Pennzoil Exploration & Production Co. | Carthage, TX 75633 | Oil & Gas Operator | Mar 2008 |
| 20 | Pennzoil Petroleum Company | Houston, TX 77252 | Oil & Gas Operator | Nov 1999 |
| 21 | Penroc Oil Corp. | Hobbs, NM 88241 | Oil & Gas Operator | Dec 2024 |
| 22 | Penwell South Operating LLC | Houston, TX 77269 | Oil Operator | Mar 2025 |
| 23 | Perimeter Resource Company | Midland, TX 79702 | Oil & Gas Operator | Mar 2025 |
| 24 | Permian Resources, Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 25 | Petex | Breckenridge, TX 76424 | Oil & Gas Operator | Mar 2025 |
| 26 | Petro-Smith Operating LLC | Houston, TX 77010 | Oil & Gas Operator | Mar 2025 |
| 27 | Petroleum Technical Services Co. | Midland, TX 79707 | Oil & Gas Operator | Dec 2004 |
| 28 | Petroplex Energy Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2025 |
| 29 | Petroplex Equipment, Inc. | Midland, TX 79701 | Oil & Gas Operator | May 2019 |
| 30 | Petx Operating LLC | Sheridan, WY 82801 | Oil Operator | Mar 2025 |
| 31 | Pharaoh Oil & Gas, Inc. | MC Camey, TX 79752 | Oil & Gas Operator | Mar 2025 |
| 32 | Phillips 66 Company | Bartlesville, OK 74004 | Oil & Gas Operator | Aug 1997 |
| 33 | Phillips Petroleum Company | Houston, TX 77251 | Oil & Gas Operator | Mar 2013 |
| 34 | Phoenix Hydrocarbons Operating | Midland, TX 79702 | Oil & Gas Operator | Jun 2024 |
| 35 | Pierce Production Company | Eunice, NM 88231 | Oil & Gas Operator | Oct 2012 |
| 36 | Pierce Production Company, LLC | Midland, TX 79702 | Oil & Gas Operator | Mar 2025 |
| 37 | Pioneer Exploration Company | Houston, TX 77090 | Oil & Gas Operator | Jan 2025 |
| 38 | Pioneer Exploration, LLC | Houston, TX 77090 | Oil & Gas Operator | Dec 2024 |
| 39 | Pioneer Exploration, LTD. | Houston, TX 77090 | Oil & Gas Operator | Sep 2008 |
| 40 | Pioneer Natural Res. USA, Inc. | Irving, TX 75038 | Oil & Gas Operator | Mar 2025 |
| 41 | Pitts Energy Co. | Midland, TX 79707 | Oil & Gas Operator | Mar 2025 |
| 42 | Plains Marketing, LP | Cushing, OK 74023 | Oil & Gas Operator | Dec 2022 |
| 43 | Plains Petroleum Operating Co | Denver, CO 80202 | Oil & Gas Operator | Dec 2014 |
| 44 | Platform Operating, LLC | Midland, TX 79702 | Oil & Gas Operator | Mar 2025 |
| 45 | Pogo Producing Company | Houston, TX 77002 | Oil & Gas Operator | Jan 2008 |
| 46 | Pogo Producing Company LLC | Houston, TX 77002 | Oil & Gas Operator | Jan 2025 |
| 47 | Polaris Production Corp. | Midland, TX 79702 | Oil & Gas Operator | Jan 2024 |
| 48 | Porosity Oil LLC | Imperial, TX 79743 | Oil Operator | Mar 2025 |
| 49 | PPC Operating Company LLC | Houston, TX 77279 | Oil & Gas Operator | Jul 2019 |
| 50 | Preferred Pipeline Corp. | Victoria, TX 77902 | Oil & Gas Operator | Feb 2025 |
| 51 | Premier Natural Resources, L.P. | Tulsa, OK 74105 | Oil & Gas Operator | Feb 2007 |
| 52 | Premier Natural Resources, LLC | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2025 |
| 53 | Prime Operating Company | Houston, TX 77024 | Oil & Gas Operator | Mar 2025 |
| 54 | Prize Operating Company | Grapevine, TX 76051 | Oil & Gas Operator | Aug 2016 |
| 55 | Pure Resources, L.P. | Midland, TX 79701 | Oil & Gas Operator | Mar 2006 |
| 56 | Purvis Operating Co. | Midland, TX 79710 | Oil & Gas Operator | Mar 2025 |
| 57 | Purvis, J. H. | Midland, TX 79702 | Oil & Gas Operator | Dec 1994 |
| 58 | Pyramid Gas Co | Midland, TX 79707 | Oil Operator | Mar 2025 |
| 59 | Pyramid Oil Co. | Litchfield PK, AZ 85340 | Oil & Gas Operator | Jan 2018 |