| 1 | Palmer Petroleum Inc. | Shreveport, LA 71105 | Oil & Gas Operator | Dec 2024 |
| 2 | Paradis Investments, L.L.C. | Bellaire, TX 77401 | Oil Operator | Jun 2020 |
| 3 | Pardee Production Co. | Skiatook, OK 74070 | Oil & Gas Operator | Mar 2021 |
| 4 | Parker & Parsley Development Co. | Midland, TX 79702 | Oil & Gas Operator | May 1995 |
| 5 | Parker & Parsley Development L.P | Midland, TX 79702 | Oil & Gas Operator | Oct 2007 |
| 6 | Patrick Production Company | Houston, TX 77266 | Oil & Gas Operator | Dec 2024 |
| 7 | Patton Operating Co. | Kilgore, TX 75663 | Oil & Gas Operator | Nov 1997 |
| 8 | Payne-Johnston | Tyler, TX 75702 | Oil & Gas Operator | Nov 1996 |
| 9 | Peak Energy Corporation | Plano, TX 75093 | Oil & Gas Operator | Oct 2018 |
| 10 | Pedernales Petroleum Op, LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2024 |
| 11 | Pedestal Oil Company Inc | Oklahoma City, OK 73101-1522 | Oil & Gas Operator | May 2019 |
| 12 | Pennzoil Exploration & Production Co. | Carthage, TX 75633 | Oil & Gas Operator | Mar 2008 |
| 13 | Penroc Oil Corp. | Hobbs, NM 88241 | Oil & Gas Operator | Sep 2024 |
| 14 | Petralis Energy Resources, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Dec 2024 |
| 15 | Petro-Hunt, L.L.C. | Dallas, TX 75201 | Oil & Gas Operator | Dec 2024 |
| 16 | Petroleum Management, Inc. | Corpus Chrsti, TX 78471 | Oil & Gas Operator | Dec 2024 |
| 17 | Petromining, Inc. | Plano, TX 75026 | Oil & Gas Operator | Dec 2024 |
| 18 | PG&E Resources Company | Houston, TX 77042 | Oil & Gas Operator | May 1995 |
| 19 | Phillips Energy, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Dec 2018 |
| 20 | Phillips Petroleum Company | Houston, TX 77251 | Oil & Gas Operator | Mar 2013 |
| 21 | Phillips, B. F. Jr., Estate Of | Dallas, TX 75201 | Oil & Gas Operator | Mar 2011 |
| 22 | Phillips, Jack L. | Gladewater, TX 75647 | Oil & Gas Operator | Dec 1997 |
| 23 | Phillips, Jack L. Co. | Gladewater, TX 75647 | Oil & Gas Operator | Dec 2024 |
| 24 | Pickens Company, Inc., The | Dallas, TX 75225 | Oil & Gas Operator | Jun 2024 |
| 25 | Pine Creek Operating LLC | Colorado SPGS, CO 80903 | Oil & Gas Operator | Jul 2021 |
| 26 | Plains Marketing LP | Cushing, OK 74023 | Oil & Gas Operator | Dec 2022 |
| 27 | Plains Production Inc | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 1995 |
| 28 | Pmo | Garland, TX 75040 | Oil & Gas Operator | Feb 2018 |
| 29 | Powell, Gene Investments, Inc. | Longview, TX 75608 | Oil & Gas Operator | Apr 2024 |
| 30 | Powell, N. P. Estate | Tyler, TX 75702 | Oil & Gas Operator | Aug 1997 |
| 31 | Powell, N. P. Estate Partnership | Tyler, TX 75702 | Oil & Gas Operator | May 2002 |
| 32 | Pozo Resources, Inc | Houston, TX 77002 | Oil & Gas Operator | Dec 2024 |
| 33 | Pride Energy Company | Tulsa, OK 74170 | Oil & Gas Operator | Dec 2024 |
| 34 | Prince Properties, Inc. | Electra, TX 76360 | Oil & Gas Operator | Aug 2003 |
| 35 | Prize Operating Company | Grapevine, TX 76051 | Oil & Gas Operator | Aug 2016 |
| 36 | Pro-Test, Inc. | Kilgore, TX 75663 | Oil Operator | Dec 2024 |
| 37 | Progas Properties, Inc. | New Braunfels, TX 78132 | Oil & Gas Operator | Dec 2024 |
| 38 | Proven Natural Resources LLC | Rockwall, TX 75032 | Oil & Gas Operator | Dec 2024 |
| 39 | Psi Production, Inc. | Tyler, TX 75702 | Gas Operator | Jan 1994 |
| 40 | PXP Gulf Coast Inc. | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |