| 1 | Pace Production Co. | San Angelo, TX 76902 | Oil & Gas Operator | Oct 2025 |
| 2 | Paleo Oil Company LLC | Corpus Chrsti, TX 78411 | Oil & Gas Operator | Oct 2025 |
| 3 | Paloma Operating, LLC | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Oct 2025 |
| 4 | Pantera Energy Company | Amarillo, TX 79101 | Oil & Gas Operator | Oct 2025 |
| 5 | Paragon Energy, Inc. | Dallas, TX 75244 | Oil & Gas Operator | Oct 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 L.P. | Midland, TX 79702 | Oil & Gas Operator | Oct 1997 |
| 9 | Patricia Oil Company | Tuleta, TX 78162 | Oil Operator | Sep 2008 |
| 10 | Patterson Energy Corporation | Dallas, TX 75205 | Oil & Gas Operator | Oct 2025 |
| 11 | Payne Producing Co. | Fredericksbrg, TX 78624 | Oil & Gas Operator | Jun 2008 |
| 12 | Payne, B.R. Oil & Gas, Inc. | Corpus Chrsti, TX 78411 | Oil & Gas Operator | Feb 2006 |
| 13 | Pearl, Bill H. Productions, Inc. | Corpus Chrsti, TX 78460 | Oil & Gas Operator | Oct 2025 |
| 14 | Pegasus Petroleum Corporation | Corpus Chrsti, TX 78476 | Oil & Gas Operator | Oct 2025 |
| 15 | Pennzenergy Exp. & Prod., L.L.C. | Houston, TX 77210 | Oil & Gas Operator | Mar 2000 |
| 16 | Pennzoil Exploration & Production Co. | Carthage, TX 75633 | Oil & Gas Operator | Mar 2008 |
| 17 | Petra Oleum Corp. | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |
| 18 | Petro-Hunt, L.L.C. | Dallas, TX 75201 | Oil & Gas Operator | Oct 2025 |
| 19 | Petrocorp Acquisition Company | Tulsa, OK 74121 | Oil & Gas Operator | Dec 2002 |
| 20 | Petrocorp Incorporated,A TX.Corp | Tulsa, OK 74170 | Oil & Gas Operator | Apr 2005 |
| 21 | Petrohawk Operating Company | Houston, TX 77056 | Oil & Gas Operator | Oct 2021 |
| 22 | Petroleum Management, Inc. | Corpus Chrsti, TX 78471 | Oil & Gas Operator | Oct 2025 |
| 23 | Pintex Operating Inc. | Corpus Chrsti, TX 78478 | Oil & Gas Operator | Feb 2005 |
| 24 | Pioneer Natural Res. USA, Inc. | Spring, TX 77389 | Oil & Gas Operator | Oct 2025 |
| 25 | Pipeline Management, Inc. | Lubbock, TX 79401 | Oil & Gas Operator | Dec 2002 |
| 26 | Placer Oil Co. | Sugar Land, TX 77479 | Oil & Gas Operator | Apr 2008 |
| 27 | Plains Marketing, LP | Cushing, OK 74023 | Oil Operator | Jan 2012 |
| 28 | Pmi Energy Co. | Corpus Chrsti, TX 78471 | Oil & Gas Operator | Aug 2002 |
| 29 | Poco LLC | Houston, TX 77270 | Oil & Gas Operator | Oct 2025 |
| 30 | Pool Operating Corporation | Lago VIsta, TX 78645 | Oil & Gas Operator | Oct 2016 |
| 31 | Prime Operating Company | Houston, TX 77024 | Oil & Gas Operator | Oct 2025 |
| 32 | Progas Properties, Inc. | New Braunfels, TX 78132 | Oil & Gas Operator | Oct 2025 |
| 33 | Proline Energy Resources Inc | Sugar Land, TX 77479 | Oil & Gas Operator | Oct 2025 |
| 34 | Proton Energy, L.L.C. | Houston, TX 77002 | Oil & Gas Operator | Jun 2005 |