| 1 | P & R Oil Company | Post, TX 79356 | Oil & Gas Operator | May 2024 |
| 2 | Pantera Energy Company | Amarillo, TX 79101 | Oil & Gas Operator | May 2024 |
| 3 | Par Producing Company | Snyder, TX 79550 | Oil & Gas Operator | Jun 2017 |
| 4 | Parallel Petroleum Corporation | Midland, TX 79702 | Oil & Gas Operator | Jan 2010 |
| 5 | Patterson Petroleum LP | Snyder, TX 79550 | Oil & Gas Operator | Mar 2008 |
| 6 | Patterson Petroleum, Inc. | Snyder, TX 79550 | Oil & Gas Operator | Feb 2000 |
| 7 | Patton Exploration, Inc. | Abilene, TX 79604 | Oil & Gas Operator | May 2024 |
| 8 | Patton, E. N. Oil Company, Inc. | Abilene, TX 79604 | Oil & Gas Operator | May 2024 |
| 9 | Pecanderosa Petroleum, Inc. | MC Queeney, TX 78123 | Oil Operator | Feb 2023 |
| 10 | Pedco Resources Company | Tulsa, OK 74170 | Oil & Gas Operator | Mar 2008 |
| 11 | Petex | Breckenridge, TX 76424 | Oil & Gas Operator | May 2024 |
| 12 | Petroleum Property MGMT, Inc (A) | Fort Worth, TX 76101 | Oil & Gas Operator | May 1994 |
| 13 | Pioneer Exploration Company | Houston, TX 77090 | Oil & Gas Operator | Feb 2024 |
| 14 | Pioneer Exploration, LLC | Houston, TX 77090 | Oil & Gas Operator | Mar 2024 |
| 15 | Pioneer Exploration, LTD. | Houston, TX 77090 | Oil & Gas Operator | Sep 2008 |
| 16 | Pitcock, Inc. | Graham, TX 76450 | Oil & Gas Operator | May 2024 |
| 17 | Plains Marketing LP | Cushing, OK 74023 | Oil & Gas Operator | Dec 2022 |
| 18 | Plantation Operating, LLC | Houston, TX 77041 | Oil & Gas Operator | Nov 2011 |
| 19 | Polaris Production Corp. | Midland, TX 79702 | Oil & Gas Operator | Jan 2024 |
| 20 | Polk Petroleum, Inc. | Abilene, TX 79604 | Oil & Gas Operator | May 2024 |
| 21 | Preferred Pipeline Corp. | Victoria, TX 77902 | Oil & Gas Operator | Mar 2024 |
| 22 | Pride Energy Company | Tulsa, OK 74170 | Oil & Gas Operator | May 2024 |
| 23 | Probity Operating, LLC | Midland, TX 79708 | Oil & Gas Operator | Jul 2014 |
| 24 | Producers Operating Co Inc | Amarillo, TX 79105 | Oil & Gas Operator | May 2024 |
| 25 | Psi Production, Inc. | Tyler, TX 75702 | Gas Operator | Jan 1994 |
| 26 | Pyramid Gas Co | Midland, TX 79707 | Oil Operator | May 2024 |