| 1 | P-Tex Petroleum, Inc. | Dallas, TX 75238 | Oil & Gas Operator | Nov 1999 |
| 2 | P. L. O. | Boerne, TX 78006 | Oil & Gas Operator | Jun 2016 |
| 3 | Palmer, James W. | Wichita Falls, TX 76308 | Oil & Gas Operator | Jul 2002 |
| 4 | Paradigm Exploration Company | Dallas, TX 75214 | Oil Operator | Sep 2020 |
| 5 | Paragon Corporation | Abilene, TX 79604 | Oil & Gas Operator | Oct 2025 |
| 6 | Paschal Petroleum, Inc. | Dallas, TX 75380 | Oil & Gas Operator | Apr 1994 |
| 7 | Patterson Petroleum LP | Snyder, TX 79550 | Oil & Gas Operator | Mar 2008 |
| 8 | Patterson Petroleum, Inc. | Snyder, TX 79550 | Oil & Gas Operator | Feb 2000 |
| 9 | Patton Exploration, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Oct 2025 |
| 10 | Patton, E. N. Oil Company, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Oct 2025 |
| 11 | Pearl, Bill H. Productions, Inc. | Corpus Chrsti, TX 78460 | Oil & Gas Operator | Oct 2025 |
| 12 | Ped Oil Corporation | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |
| 13 | Perkins-Prothro Company | Wichita Falls, TX 76308 | Oil & Gas Operator | May 2002 |
| 14 | Permian West Corp. | Odessa, TX 79762 | Oil & Gas Operator | Oct 2025 |
| 15 | Petex | Breckenridge, TX 76424 | Oil & Gas Operator | Oct 2025 |
| 16 | Petro-Beth Oil & Gas, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Mar 2006 |
| 17 | Petrocat Innovations, LLC | Forney, TX 75126 | Oil Operator | Oct 2025 |
| 18 | Petron Energy Inc | Dallas, TX 75252 | Oil & Gas Operator | Oct 2025 |
| 19 | PG&E Resources Company | Houston, TX 77042 | Oil & Gas Operator | May 1995 |
| 20 | Plains Petroleum Operating Co. | Denver, CO 80202 | Oil & Gas Operator | Dec 2014 |
| 21 | Plains Production Inc | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 1995 |
| 22 | Plumb Resources, Inc. | Houston, TX 77096 | Oil & Gas Operator | Jun 1998 |
| 23 | Polk Petroleum, Inc. | Abilene, TX 79604 | Oil & Gas Operator | May 2024 |
| 24 | Pony Express Corporate Trust | Aledo, TX 76008 | Oil & Gas Operator | Oct 2025 |
| 25 | Presidio Exploration, Inc. | Englewood, CO 80155 | Oil & Gas Operator | May 1999 |
| 26 | Pryor Petroleum Corporation | Wichita Falls, TX 76308 | Oil & Gas Operator | Oct 2025 |