| 1 | P-R-O Management, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Apr 2024 |
| 2 | Palisades Operating Company | Midland, TX 79702 | Oil & Gas Operator | Apr 2024 |
| 3 | Palmer Petroleum Inc. | Shreveport, LA 71106 | Oil & Gas Operator | Apr 2024 |
| 4 | Panhandle Oil & Gas Inc | Oklahoma City, OK 73112-5688 | Oil & Gas Operator | May 2007 |
| 5 | Park & Park Oil Co. | Allen, TX 75002 | Oil & Gas Operator | Apr 2024 |
| 6 | Parten Operating Inc. | Houston, TX 77069 | Oil & Gas Operator | Apr 2024 |
| 7 | Patrick Pet. Corp. Of Michigan | Houston, TX 77227 | Oil & Gas Operator | Aug 1995 |
| 8 | Patton Operating Co. | Kilgore, TX 75663 | Oil & Gas Operator | Nov 1997 |
| 9 | PDH Enterprises | Pittsburg, TX 75686 | Oil & Gas Operator | Apr 2019 |
| 10 | Peles, LLC | Houston, TX 77057 | Oil & Gas Operator | Apr 2024 |
| 11 | Permian Natural Resources | Austin, TX 78701 | Oil & Gas Operator | Apr 2024 |
| 12 | Perryman Exp. And Prod., LLC | Athens, TX 75751 | Oil & Gas Operator | Apr 2024 |
| 13 | Perryman Operating Company | Athens, TX 75751 | Oil & Gas Operator | Apr 2024 |
| 14 | Petralis Energy Resources, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Apr 2024 |
| 15 | Petro-Chem Operating Company, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Apr 2024 |
| 16 | Petro-Hunt, L.L.C. | Dallas, TX 75201 | Oil & Gas Operator | Apr 2024 |
| 17 | Petromac, Inc. | Onalaska, TX 77360 | Oil & Gas Operator | Apr 2024 |
| 18 | Petroreal Inc. | Temple, TX 76503 | Oil & Gas Operator | Apr 2024 |
| 19 | Phillips Petroleum Company | Houston, TX 77251 | Oil & Gas Operator | Mar 2013 |
| 20 | Phillips, Jack L. | Gladewater, TX 75647 | Oil & Gas Operator | Dec 1997 |
| 21 | Phoenix Hydrocarbons Operating | Midland, TX 79702 | Oil & Gas Operator | Apr 2024 |
| 22 | Pickens Company, Inc., The | Dallas, TX 75225 | Oil & Gas Operator | Feb 2024 |
| 23 | Pintail Production Co., Inc. | Fort Worth, TX 76132 | Oil & Gas Operator | Apr 2024 |
| 24 | Plains Marketing LP | Cushing, OK 74023 | Oil & Gas Operator | Dec 2022 |
| 25 | Powerline Energy Corporation | Arlington, TX 76015 | Oil & Gas Operator | Apr 2024 |
| 26 | Precise Development, Inc. | Austin, TX 78709 | Oil & Gas Operator | May 2005 |
| 27 | Premium Exploration Company | Early, TX 76803 | Oil & Gas Operator | Apr 2024 |
| 28 | Presidio Exploration, Inc. | Englewood, CO 80155 | Oil & Gas Operator | May 1999 |
| 29 | Pride Energy Company | Tulsa, OK 74170 | Oil & Gas Operator | Apr 2024 |
| 30 | Princess Three Corporation | Henderson, TX 75653 | Oil & Gas Operator | Apr 2020 |
| 31 | Princess Three Operating, LLC | Henderson, TX 75653 | Oil & Gas Operator | Apr 2024 |