| 1 | P-R-O Management, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Dec 2024 |
| 2 | P.O.&G. Operating, LLC | Houston, TX 77057 | Oil & Gas Operator | Dec 2024 |
| 3 | Palmer Petroleum Inc. | Shreveport, LA 71105 | Oil & Gas Operator | Dec 2024 |
| 4 | Panhandle Oil & Gas Inc | Oklahoma City, OK 73112-5688 | Oil & Gas Operator | May 2007 |
| 5 | Par Minerals Corporation | Shreveport, LA 71101 | Oil & Gas Operator | Dec 2024 |
| 6 | Pardee Production Co. | Skiatook, OK 74070 | Oil & Gas Operator | Mar 2021 |
| 7 | Park & Park Oil Co. | Allen, TX 75002 | Oil & Gas Operator | Dec 2024 |
| 8 | PDH Enterprises | Pittsburg, TX 75686 | Oil & Gas Operator | Apr 2019 |
| 9 | Peak Energy Corporation | Plano, TX 75093 | Oil & Gas Operator | Oct 2018 |
| 10 | Pearl Petroleum Inc | Lawton, OK 73501-5821 | Oil & Gas Operator | Jan 2014 |
| 11 | Pennzenergy Exp. & Prod., L.L.C. | Houston, TX 77210 | Oil & Gas Operator | Mar 2000 |
| 12 | Pennzoil Exploration & Production Co. | Carthage, TX 75633 | Oil & Gas Operator | Mar 2008 |
| 13 | Permian Natural Resources | Austin, TX 78701 | Oil & Gas Operator | Dec 2024 |
| 14 | Perryman Exp. And Prod., LLC | Athens, TX 75751 | Oil & Gas Operator | Dec 2024 |
| 15 | Perryman Operating Company | Athens, TX 75751 | Oil & Gas Operator | Dec 2024 |
| 16 | Petralis Energy Resources, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Dec 2024 |
| 17 | Petro-Hunt, L.L.C. | Dallas, TX 75201 | Oil & Gas Operator | Dec 2024 |
| 18 | Petrocorp Incorporated,A TX.Corp | Tulsa, OK 74170 | Oil & Gas Operator | Apr 2005 |
| 19 | Phillips Energy, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Dec 2018 |
| 20 | Phillips Petroleum Company | Houston, TX 77251 | Oil & Gas Operator | Mar 2013 |
| 21 | Phillips, Jack L. | Gladewater, TX 75647 | Oil & Gas Operator | Dec 1997 |
| 22 | Phoenix Fund, Inc. | San Antonio, TX 78217 | Oil & Gas Operator | Jun 2000 |
| 23 | Phoenix Hydrocarbons Operating | Midland, TX 79702 | Oil & Gas Operator | Jun 2024 |
| 24 | Phylko Energy Corporation | Houston, TX 77056 | Oil & Gas Operator | Aug 2003 |
| 25 | Pickens Company, Inc., The | Dallas, TX 75225 | Oil & Gas Operator | Jun 2024 |
| 26 | Plains Marketing LP | Cushing, OK 74023 | Oil & Gas Operator | Dec 2022 |
| 27 | Powell, Gene Investments, Inc. | Longview, TX 75608 | Oil & Gas Operator | Apr 2024 |
| 28 | Premium Exploration Company | Early, TX 76803 | Oil & Gas Operator | Dec 2024 |
| 29 | Pride Energy Company | Tulsa, OK 74170 | Oil & Gas Operator | Dec 2024 |
| 30 | Progressive Gas Services Inc. | Houston, TX 77279 | Oil & Gas Operator | Feb 2002 |