| 1 | P.O.&G. Operating, LLC | Houston, TX 77057 | Oil & Gas Operator | Apr 2026 |
| 2 | P1 Energy, LLC | Judson, TX 75660 | Oil & Gas Operator | Apr 2026 |
| 3 | Paint Rock Operating, LLC | San Angelo, TX 76904 | Oil & Gas Operator | Apr 2026 |
| 4 | Parallel Petroleum Corporation | Midland, TX 79702 | Oil & Gas Operator | Jan 2010 |
| 5 | Parker & Parsley Development Co. | Midland, TX 79702 | Oil & Gas Operator | May 1995 |
| 6 | Parker & Parsley Development L.P | Midland, TX 79702 | Oil & Gas Operator | Oct 2007 |
| 7 | Patno Oil & Gas Company | Zapata, TX 78076 | Oil & Gas Operator | Apr 2026 |
| 8 | Patterson Petroleum, Inc. | Snyder, TX 79550 | Oil & Gas Operator | Feb 2000 |
| 9 | Patton, E. N. Oil Company, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Apr 2026 |
| 10 | Patton, Lloyd | Fort Worth, TX 76113 | Oil & Gas Operator | Aug 2003 |
| 11 | Patton, Lloyd J Estate | Fort Worth, TX 76113 | Oil & Gas Operator | Aug 2003 |
| 12 | PDC Energy | Denver, CO 80203 | Oil & Gas Operator | Nov 2012 |
| 13 | PDC-WV-Co Corporation | Denver, CO 80203 | Oil & Gas Operator | Aug 2010 |
| 14 | Pearl, Bill H. Productions, Inc. | Corpus Chrsti, TX 78460 | Oil & Gas Operator | Apr 2026 |
| 15 | Pecos Operating Company, LLC | Midland, TX 79701 | Oil & Gas Operator | Jun 2021 |
| 16 | Pecos Operators, Inc. | Midland, TX 79702 | Oil & Gas Operator | Dec 1993 |
| 17 | Pedco Resources Company | Tulsa, OK 74170 | Oil & Gas Operator | Mar 2008 |
| 18 | Penwell Energy, Inc. | Houston, TX 77057 | Oil & Gas Operator | Apr 2026 |
| 19 | Perimeter Resource Company | Midland, TX 79702 | Oil & Gas Operator | Apr 2026 |
| 20 | Perkins-Prothro Company | Wichita Falls, TX 76308 | Oil & Gas Operator | May 2002 |
| 21 | Petro Plex Oil Co Inc. | Homosassa, FL 34448 | Oil & Gas Operator | Jul 2020 |
| 22 | Petro-Smith Operating LLC | Houston, TX 77010 | Oil & Gas Operator | Apr 2026 |
| 23 | Petrodata Resources, Inc. | Midland, TX 79702 | Oil & Gas Operator | Apr 2026 |
| 24 | Petx Operating LLC | Midland, TX 79702 | Oil & Gas Operator | Apr 2026 |
| 25 | Phillips Petroleum Company | Houston, TX 77251 | Oil & Gas Operator | Mar 2013 |
| 26 | Pickens Company, Inc., The | Dallas, TX 75225 | Oil & Gas Operator | Jan 2025 |
| 27 | Pioneer Exploration Company | Houston, TX 77090 | Oil & Gas Operator | Feb 2026 |
| 28 | Pioneer Exploration, LLC | Houston, TX 77090 | Oil & Gas Operator | Dec 2025 |
| 29 | Pioneer Exploration, LTD. | Houston, TX 77090 | Oil & Gas Operator | Sep 2008 |
| 30 | Pioneer Natural Res. USA, Inc. | Spring, TX 77389 | Oil & Gas Operator | Apr 2026 |
| 31 | Pittencrieff America Inc | Abilene, TX 79608 | Oil & Gas Operator | Feb 2003 |
| 32 | Pitts Energy Co. | Midland, TX 79707 | Oil & Gas Operator | Apr 2026 |
| 33 | Placid Oil Company | Houston, TX 77227 | Oil & Gas Operator | Mar 2008 |
| 34 | Plains Marketing, LP | Cushing, OK 74023 | Oil Operator | Jan 2012 |
| 35 | Plateau Energy, LLC | Smyer, TX 79367 | Oil & Gas Operator | Dec 2024 |
| 36 | Plover Production Company | Fort Worth, TX 76109 | Oil & Gas Operator | Jul 2006 |
| 37 | Pogo Producing Company | Houston, TX 77002 | Oil & Gas Operator | Jan 2008 |
| 38 | Pogo Producing Company LLC | Houston, TX 77002 | Oil & Gas Operator | Feb 2026 |
| 39 | Polk Petroleum, Inc. | Abilene, TX 79604 | Oil & Gas Operator | May 2024 |
| 40 | Prestonwood Operating LLC | Palmerton, PA 18071 | Oil Operator | Apr 2026 |
| 41 | Prestonwood WF LLC | Palmerton, PA 18071 | Oil Operator | Apr 2026 |
| 42 | Prize Operating Company | Grapevine, TX 76051 | Oil & Gas Operator | Aug 2016 |
| 43 | Probe Oil Company | Midland, TX 79710 | Oil & Gas Operator | Jul 2016 |
| 44 | Proven Reserves Management, Inc. | Dallas, TX 75370 | Oil & Gas Operator | Jan 2026 |
| 45 | Pure Resources, L.P. | Midland, TX 79701 | Oil & Gas Operator | Mar 2006 |
| 46 | Purvis Operating Co. | Midland, TX 79710 | Oil & Gas Operator | Apr 2026 |
| 47 | Purvis, J. H. | Midland, TX 79702 | Oil & Gas Operator | Dec 1994 |
| 48 | Pyramid Energy Inc | San Antonio, TX 78216 | Oil & Gas Operator | Feb 2012 |