| 1 | Pace Oil And Gas Company | Austin, TX 78715 | Oil & Gas Operator | Oct 2025 |
| 2 | Pace Production Co. | San Angelo, TX 76902 | Oil & Gas Operator | Oct 2025 |
| 3 | Paleo Oil Company LLC | Corpus Chrsti, TX 78411 | Oil & Gas Operator | Oct 2025 |
| 4 | Paloma Operating, LLC | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Oct 2025 |
| 5 | Pantera Energy Company | Amarillo, TX 79101 | Oil & Gas Operator | Oct 2025 |
| 6 | Par Minerals Corporation | Shreveport, LA 71101 | Oil & Gas Operator | Oct 2025 |
| 7 | Parker & Parsley Development L.P | Midland, TX 79702 | Oil & Gas Operator | Oct 2007 |
| 8 | Pearl, Bill H. Productions, Inc. | Corpus Chrsti, TX 78460 | Oil & Gas Operator | Oct 2025 |
| 9 | Pedeco, Inc. | Casper, WY 82601 | Oil & Gas Operator | Mar 2008 |
| 10 | Penn VIrginia Oil & Gas Corp | Houston, TX 77024 | Oil & Gas Operator | Dec 2023 |
| 11 | Penn VIrginia Oil & Gas, L.P. | Houston, TX 77084 | Oil & Gas Operator | Nov 2022 |
| 12 | Peoples Energy Prod.-TX, L.P. | Houston, TX 77002 | Oil & Gas Operator | Sep 2007 |
| 13 | Petro-Guard Company, Inc. | Houston, TX 77057 | Oil & Gas Operator | Nov 2014 |
| 14 | Petro-Smith Operating LLC | Houston, TX 77010 | Oil & Gas Operator | Oct 2025 |
| 15 | Petrodome Operating, LLC | Houston, TX 77265 | Oil & Gas Operator | Jun 2025 |
| 16 | Petrohawk Operating Company | Houston, TX 77056 | Oil & Gas Operator | Oct 2021 |
| 17 | Petroleum Management, Inc. | Corpus Chrsti, TX 78471 | Oil & Gas Operator | Oct 2025 |
| 18 | Petroleum Resource Management Co | Fort Worth, TX 76107 | Oil & Gas Operator | Jan 2024 |
| 19 | PG&E Resources Company | Houston, TX 77042 | Oil & Gas Operator | May 1995 |
| 20 | Phillips Energy, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Dec 2018 |
| 21 | Pintail Production Co., Inc. | Fort Worth, TX 76132 | Oil & Gas Operator | Oct 2025 |
| 22 | Pintex Operating Inc. | Corpus Chrsti, TX 78478 | Oil & Gas Operator | Feb 2005 |
| 23 | Placer Oil Co. | Sugar Land, TX 77479 | Oil & Gas Operator | Apr 2008 |
| 24 | Pmo | Garland, TX 75040 | Oil & Gas Operator | Feb 2018 |
| 25 | Poco LLC | Houston, TX 77270 | Oil & Gas Operator | Oct 2025 |
| 26 | Powerline Energy Corp. | Arlington, TX 76015 | Oil & Gas Operator | Oct 2025 |
| 27 | Prevail Energy, Inc | Corpus Chrsti, TX 78469 | Oil & Gas Operator | Oct 2025 |
| 28 | Prime Operating Company | Houston, TX 77024 | Oil & Gas Operator | Oct 2025 |
| 29 | Proline Energy Resources Inc | Sugar Land, TX 77479 | Oil & Gas Operator | Oct 2025 |
| 30 | Property Development Group, Inc. | San Antonio, TX 78212 | Oil & Gas Operator | Oct 2025 |
| 31 | Pullin Lease Service, Inc. | Taft, TX 78390 | Oil & Gas Operator | Oct 2025 |
| 32 | Puls Operating Company | Boerne, TX 78006 | Oil & Gas Operator | Oct 2025 |
| 33 | Puls, W. L. | Houston, TX 77084 | Oil & Gas Operator | Sep 2002 |
| 34 | Pyle Petroleum | Corpus Chrsti, TX 78473 | Oil & Gas Operator | Dec 1996 |
| 35 | Pyle Petroleum, Inc. | Tyler, TX 75703 | Oil & Gas Operator | Apr 2025 |
| 36 | Pyramid Energy Inc | San Antonio, TX 78216 | Oil & Gas Operator | Feb 2012 |
| 37 | Pyramid Exploration | Houston, TX 77241 | Oil & Gas Operator | Sep 1995 |