| 1 | P.B. Blue Dot Properties | Wexford, PA 15090 | Oil & Gas Operator | Apr 2024 |
| 2 | Patterson, Ben M., Jr. | San Antonio, TX 78216 | Oil & Gas Operator | Mar 2003 |
| 3 | Payrock II, LLC | Houston, TX 77007 | Oil & Gas Operator | Dec 2020 |
| 4 | Pearl, Bill H. Productions, Inc. | Corpus Chrsti, TX 78460 | Oil & Gas Operator | Apr 2024 |
| 5 | Pearsall Partners | Dallas, TX 75201 | Oil & Gas Operator | Mar 1993 |
| 6 | Penrod Oil Company Of Texas, Inc | Milano, TX 76556 | Oil & Gas Operator | Apr 2024 |
| 7 | Perdido Energy, LLC | Houston, TX 77251 | Oil & Gas Operator | Apr 2024 |
| 8 | Petro-Hunt Corporation | Dallas, TX 75201 | Oil & Gas Operator | Jun 2003 |
| 9 | Petrohawk Operating Company | Houston, TX 77056 | Oil & Gas Operator | Oct 2021 |
| 10 | Petrolero Corp. | San Antonio, TX 78205 | Oil & Gas Operator | Feb 1998 |
| 11 | Petroleum Management, Inc. | Corpus Chrsti, TX 78471 | Oil & Gas Operator | Apr 2024 |
| 12 | Petroquest Energy, L.L.C. | Lafayette, LA 70505 | Oil & Gas Operator | Apr 2024 |
| 13 | Phillips 66 Company | Bartlesville, OK 74004 | Oil & Gas Operator | Aug 1997 |
| 14 | Phillips, Jack L. Co. | Gladewater, TX 75647 | Oil & Gas Operator | Apr 2024 |
| 15 | Pioneer Natural Res. USA, Inc. | Irving, TX 75038 | Oil & Gas Operator | Apr 2024 |
| 16 | Plains Marketing LP | Cushing, OK 74023 | Oil & Gas Operator | Dec 2022 |
| 17 | Plano Petroleum Corporation | McKinney, TX 75070 | Oil & Gas Operator | Dec 2023 |
| 18 | Pressly Oil Interest, Inc. | San Antonio, TX 78217 | Oil & Gas Operator | Apr 2024 |
| 19 | Progas Properties, Inc. | New Braunfels, TX 78132 | Oil & Gas Operator | Apr 2024 |
| 20 | Proline Energy Resources Inc | Sugar Land, TX 77479 | Oil & Gas Operator | Apr 2024 |
| 21 | Pursuit Oil & Gas STX, LLC | Houston, TX 77024 | Oil & Gas Operator | Apr 2024 |
| 22 | Pursuit Oil & Gas, LLC | Houston, TX 77024 | Gas Operator | Sep 2019 |
| 23 | PXP Gulf Coast Inc. | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 24 | PXP Texas Inc. | Houston, TX 77002 | Oil & Gas Operator | Feb 2007 |
| 25 | Pyle Petroleum, Inc. | Tyler, TX 75703 | Oil & Gas Operator | Apr 2024 |