| 1 | Pa Prospect LLC | Columbus, MT 59019 | Oil & Gas Operator | Jul 2020 |
| 2 | Pace Royalty Trust Fund, Inc. | Shreveport, LA 71135 | Oil & Gas Operator | Nov 2001 |
| 3 | Palmer Petroleum Inc. | Shreveport, LA 71105 | Oil & Gas Operator | Jul 2025 |
| 4 | Palo Petroleum, Inc. | Dallas, TX 75360 | Oil & Gas Operator | Jul 2025 |
| 5 | Panamerican Operating Inc | Dallas, TX 75219 | Oil & Gas Operator | Jul 2025 |
| 6 | Par Minerals Corporation | Shreveport, LA 71101 | Oil & Gas Operator | Jul 2025 |
| 7 | Paradis Investments, L.L.C. | Bellaire, TX 77401 | Oil Operator | Jun 2020 |
| 8 | Park & Park Oil Co. | Allen, TX 75002 | Oil & Gas Operator | Jul 2025 |
| 9 | Patara Andover I LLC | Houston, TX 77002 | Oil & Gas Operator | Feb 2014 |
| 10 | Patara Oil & Gas LLC | Dallas, TX 75219 | Oil & Gas Operator | Mar 2018 |
| 11 | Patton Operating Co. | Kilgore, TX 75663 | Oil & Gas Operator | Nov 1997 |
| 12 | Peak Energy Corporation | Plano, TX 75093 | Oil & Gas Operator | Oct 2018 |
| 13 | Pedernales Petroleum Op, LLC | Houston, TX 77002 | Oil & Gas Operator | Jul 2025 |
| 14 | Pegasi Energy Resources Corp | Tyler, TX 75710 | Oil & Gas Operator | Jul 2007 |
| 15 | Pegasus P And A LLC | Kilgore, TX 75663 | Oil Operator | Jul 2025 |
| 16 | Penn VIrginia Oil & Gas Corp | Houston, TX 77024 | Oil & Gas Operator | Dec 2023 |
| 17 | Penn VIrginia Oil & Gas, L.P. | Houston, TX 77084 | Oil & Gas Operator | Nov 2022 |
| 18 | Pennzenergy Exp. & Prod., L.L.C. | Houston, TX 77210 | Oil & Gas Operator | Mar 2000 |
| 19 | Pennzoil Exploration & Production Co. | Carthage, TX 75633 | Oil & Gas Operator | Mar 2008 |
| 20 | Penroc Oil Corp. | Hobbs, NM 88241 | Oil & Gas Operator | May 2025 |
| 21 | Peoples Energy Prod.-TX, L.P. | Houston, TX 77002 | Oil & Gas Operator | Sep 2007 |
| 22 | Person, J.S., Inc. | Longview, TX 75606 | Oil & Gas Operator | Jul 2025 |
| 23 | Petro-Chem Operating Company, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Jul 2025 |
| 24 | Petro-Hunt, L.L.C. | Dallas, TX 75201 | Oil & Gas Operator | Jul 2025 |
| 25 | Petrogas Energy Services, LLC | Dallas, TX 75214 | Oil Operator | Jul 2025 |
| 26 | Petrohawk Operating Company | Houston, TX 77056 | Oil & Gas Operator | Oct 2021 |
| 27 | Petrol Industries, Inc. | Shreveport, LA 71137 | Oil & Gas Operator | Jun 2012 |
| 28 | Petroleum Investments, Inc | Shreveport, LA 71101 | Oil & Gas Operator | Dec 1977 |
| 29 | Petroleum Production MGMT., Inc. | Kansas City, MO 64112 | Oil & Gas Operator | Jul 2025 |
| 30 | Petromining, Inc. | Plano, TX 75026 | Oil & Gas Operator | Jul 2025 |
| 31 | Phillips, Jack L. | Gladewater, TX 75647 | Oil & Gas Operator | Dec 1997 |
| 32 | Phillips, Jack L. Co. | Gladewater, TX 75647 | Oil & Gas Operator | Jul 2025 |
| 33 | Pine Wave Energy Partners Op,LLC | Dallas, TX 75205 | Oil & Gas Operator | Jul 2025 |
| 34 | Pinewood Exploration Inc. | Arlington, TX 76096 | Oil & Gas Operator | Oct 2011 |
| 35 | Pintail Production Co., Inc. | Fort Worth, TX 76132 | Oil & Gas Operator | Jul 2025 |
| 36 | Plains Marketing, LP | Cushing, OK 74023 | Oil Operator | Jan 2012 |
| 37 | Plains Production Inc | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 1995 |
| 38 | Pmo | Garland, TX 75040 | Oil & Gas Operator | Feb 2018 |
| 39 | Powell, Gene Investments, Inc. | Longview, TX 75608 | Oil & Gas Operator | Apr 2024 |
| 40 | Powerline Energy Corporation | Arlington, TX 76015 | Oil & Gas Operator | Jul 2025 |
| 41 | Prenwell, LLC | Tallahasse, FL 32309 | Oil & Gas Operator | Jul 2025 |
| 42 | Preston Exploration LLC | Spring, TX 77387 | Oil & Gas Operator | Dec 2014 |
| 43 | Pride Exploration, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Jul 2015 |
| 44 | Princess Three Operating, LLC | Henderson, TX 75653 | Oil & Gas Operator | Jul 2025 |
| 45 | Proex Energy Management, L.L.C. | Spring, TX 77386 | Oil & Gas Operator | Jul 2025 |
| 46 | Proline Energy Resources Inc | Sugar Land, TX 77479 | Oil & Gas Operator | Jul 2025 |