| 1 | Pace Oil And Gas Company | Austin, TX 78715 | Oil & Gas Operator | May 2024 |
| 2 | Paladin-Hayes, L.L.C. | Austin, TX 78746 | Oil & Gas Operator | Dec 1999 |
| 3 | Palmer Petroleum Inc. | Shreveport, LA 71106 | Oil & Gas Operator | May 2024 |
| 4 | Paradis Investments, L.L.C. | Bellaire, TX 77401 | Oil Operator | Jun 2020 |
| 5 | Parker & Parsley Development L.P | Midland, TX 79702 | Oil & Gas Operator | Oct 2007 |
| 6 | Patterson Energy Corporation | Dallas, TX 75205 | Oil & Gas Operator | May 2024 |
| 7 | Pearl Energy, L.L.C. | Austin, TX 78746 | Oil & Gas Operator | Apr 2002 |
| 8 | Pearl, Bill H. Productions, Inc. | Corpus Chrsti, TX 78460 | Oil & Gas Operator | May 2024 |
| 9 | Pegasus Petroleum Corporation | Corpus Chrsti, TX 78476 | Oil & Gas Operator | May 2024 |
| 10 | Peoples Energy Prod.-TX, L.P. | Houston, TX 77002 | Oil & Gas Operator | Sep 2007 |
| 11 | Petra Oleum Corp. | Midland, TX 79702 | Oil & Gas Operator | May 2024 |
| 12 | Petro-Hunt Corporation | Dallas, TX 75201 | Oil & Gas Operator | Jun 2003 |
| 13 | Petro-Hunt, L.L.C. | Dallas, TX 75201 | Oil & Gas Operator | May 2024 |
| 14 | Petrodome Operating, LLC | Houston, TX 77265 | Oil & Gas Operator | Jan 2024 |
| 15 | Petrohawk Operating Company | Houston, TX 77056 | Oil & Gas Operator | Oct 2021 |
| 16 | PG&E Resources Company | Houston, TX 77042 | Oil & Gas Operator | May 1995 |
| 17 | Phillips Petroleum Company | Houston, TX 77251 | Oil & Gas Operator | Mar 2013 |
| 18 | Pioneer Natural Res. USA, Inc. | Irving, TX 75038 | Oil & Gas Operator | May 2024 |
| 19 | Pitco Investments, LTD. | Scottsdale, AZ 85261 | Oil & Gas Operator | Jan 2013 |
| 20 | Plains Exploration & Prod. Co. | Houston, TX 77002 | Oil & Gas Operator | Jul 2013 |
| 21 | Platinum Oil & Gas, L.L.C. | San Juan, TX 78589 | Oil & Gas Operator | May 2024 |
| 22 | Pogo Producing Company LLC | Houston, TX 77002 | Oil & Gas Operator | Feb 2024 |
| 23 | Prevail Energy, Inc | Corpus Chrsti, TX 78469 | Oil & Gas Operator | May 2024 |
| 24 | Pride Energy Company | Tulsa, OK 74170 | Oil & Gas Operator | May 2024 |
| 25 | Proline Energy Resources Inc | Sugar Land, TX 77479 | Oil & Gas Operator | May 2024 |
| 26 | Prolithic Energy Company, L.P. | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Aug 2002 |
| 27 | Pyle Petroleum | Corpus Chrsti, TX 78473 | Oil & Gas Operator | Dec 1996 |
| 28 | Pyle Petroleum, Inc. | Tyler, TX 75703 | Oil & Gas Operator | May 2024 |