| 21701 | Pecos Development Corporation | San Antonio, TX 78209 | Oil Operator | Aug 1988 |
| 21702 | Pecos Operating Company, LLC | Midland, TX 79701 | Oil & Gas Operator | Jun 2021 |
| 21703 | Pecos Operators, Inc. | Midland, TX 79702 | Oil & Gas Operator | Dec 1993 |
| 21704 | Pecos Petroleum Company | Houston, TX 77057 | Oil & Gas Operator | Oct 1999 |
| 21705 | Pecos Production Company | Oklahoma City, OK 73154 | Oil & Gas Operator | Apr 2005 |
| 21706 | Pecos River Exploration, LLC | Allen, TX 75013 | Oil & Gas Operator | Jun 2025 |
| 21707 | Pecos River Op Inc | Roswell, NM 88202 | Oil & Gas Operator | Dec 2020 |
| 21708 | Pecos Valley Management Co. | Dallas, TX 75206 | Oil & Gas Operator | Aug 2008 |
| 21709 | Pecos Valley Operating Inc. | N Richlnd HLS, TX 76182 | Oil & Gas Operator | Sep 2026 |
| 21710 | Pecos Western Corporation | | Gas Operator | Feb 1992 |
| 21711 | Ped Oil Corporation | Midland, TX 79702 | Oil & Gas Operator | Sep 2026 |
| 21712 | Pedco Inc | | Oil & Gas Operator | Nov 1997 |
| 21713 | Pedco Resources Company | Tulsa, OK 74170 | Oil & Gas Operator | Mar 2008 |
| 21714 | Pedeco, Inc. | Casper, WY 82601 | Oil & Gas Operator | Mar 2008 |
| 21715 | Peden Energy | Lubbock, TX 79424 | Oil & Gas Operator | Dec 2004 |
| 21716 | Peden Energy, Inc. | Wolfforth, TX 79382 | Oil & Gas Operator | Sep 2026 |
| 21717 | Peden, Marshell | Archer City, TX 76351 | Oil & Gas Operator | Sep 2026 |
| 21718 | Peden, Oren Inc. | Levelland, TX 79336 | Oil & Gas Operator | May 2001 |
| 21719 | Pedernales Petroleum Op, LLC | Houston, TX 77002 | Oil & Gas Operator | Sep 2026 |
| 21720 | Pedernales Petroleum Operating, LLC | | Oil & Gas Operator | Dec 2024 |
| 21721 | Pedernales Production, LP | Houston, TX 77057 | Oil & Gas Operator | Mar 2022 |
| 21722 | Pedestal Oil Company Inc | Oklahoma City, OK 73101-1522 | Oil & Gas Operator | May 2019 |
| 21723 | Pedgeco Inc | Cleveland, OH 44115 | Oil & Gas Operator | Dec 1984 |
| 21724 | Pedocs Inc | Bixby, OK 74008 | Oil & Gas Operator | Mar 2026 |
| 21725 | Pedry J J | | Oil Operator | Sep 1989 |
| 21726 | Peery, J. W. | Midland, TX 79701 | Oil & Gas Operator | Aug 2007 |
| 21727 | Peewe Oil Co. | | Oil Operator | May 2026 |
| 21728 | Pefley Oil & Gas, Inc. | Colden, NY 14033 | Gas Operator | Dec 2025 |
| 21729 | Pegasi Energy Resources Corp | Tyler, TX 75710 | Oil & Gas Operator | Jul 2007 |
| 21730 | Pegasi Operating Inc. | Jefferson, TX 75657 | Oil & Gas Operator | Sep 2026 |
| 21731 | Pegasus Energy | Oklahoma City, OK 73162 | Oil & Gas Operator | Apr 1997 |
| 21732 | Pegasus Energy Corporation | Oklahoma City, OK 73162 | Oil & Gas Operator | Mar 2015 |
| 21733 | Pegasus Operating, Inc. | Coldspring, TX 77331 | Oil & Gas Operator | Dec 2025 |
| 21734 | Pegasus P And A LLC | Kilgore, TX 75663 | Oil Operator | Sep 2026 |
| 21735 | Pegasus Petroleum Corporation | Corpus Chrsti, TX 78476 | Oil & Gas Operator | Sep 2026 |
| 21736 | Pegg Oil LLC | Allen, OK 74825-4900 | Oil Operator | Aug 2022 |
| 21737 | Peggy J Bell | Sheffield, PA 16347-0776 | Oil & Gas Operator | Dec 2004 |
| 21738 | Pel-Tex - McMoran | | Oil & Gas Operator | Dec 1985 |
| 21739 | Pel-Tex Oil Company, Inc. | | Oil & Gas Operator | Jul 1995 |
| 21740 | Pel-Tex Oil Company, LLC | | Oil & Gas Operator | Nov 2010 |
| 21741 | Pel-Tex, Inc. | | Oil & Gas Operator | Jul 1985 |
| 21742 | Peles, LLC | Houston, TX 77057 | Oil & Gas Operator | Sep 2026 |
| 21743 | Pelican Dome Exploration | Harahan, LA 70123 | Oil & Gas Operator | Jun 1997 |
| 21744 | Pelican Dome Exploration Inc | Harahan, LA 70123 | Oil & Gas Operator | Aug 2000 |
| 21745 | Pelican Gas Prod. Assoc. | | Oil & Gas Operator | Oct 1987 |
| 21746 | Pelican Hill Oil & Gas, Inc. | Carlsbad, CA 92010 | Oil & Gas Operator | May 2013 |
| 21747 | Pelican Producing Co. | | Gas Operator | Nov 1992 |
| 21748 | Pelican Producing Inc | Caldwell, OH 43724 | Oil & Gas Operator | Dec 1996 |
| 21749 | Pelican Production Company | New Orleans, LA 70130-2477 | Oil & Gas Operator | Mar 2014 |
| 21750 | Pelican Resource | | Oil Operator | Jan 1991 |
| 21751 | Pelico Pipeline, LLC | | Oil Operator | Dec 2024 |
| 21752 | Pelletter, James J & Weist, Richard M | Fredonia, NY 14063 | Gas Operator | Dec 2025 |
| 21753 | Pelto Oil Company | Houston, TX 77002 | Oil & Gas Operator | Nov 1998 |
| 21754 | Pemberton, W. C. Oil Co., Inc. | Cameron, TX 76520 | Oil & Gas Operator | Sep 2026 |
| 21755 | Pembroke Central School District | Corfu, NY 14036 | Gas Operator | Dec 2025 |
| 21756 | Pembrook Oil Company | Big Lake, TX 76932 | Oil & Gas Operator | May 1999 |
| 21757 | Pembrooke Oil & Gas Inc | Franklin, PA 16323-7760 | Oil & Gas Operator | Dec 2025 |
| 21758 | Pemco Gas Inc | Indian Harbor B, FL 32937 | Oil & Gas Operator | Dec 1997 |
| 21759 | Pemco LLC | Skiatook, OK 74070 | Oil Operator | Jun 2026 |
| 21760 | Pemex Inc | Dallas, TX 75367-0249 | Oil & Gas Operator | Nov 2015 |
| 21761 | Pen-Tex Production Co. Inc. | Penwell, TX 79776 | Oil & Gas Operator | Sep 2026 |
| 21762 | Pen-Tex Production Co. L.L.C. | Penwell, TX 79776 | Oil & Gas Operator | Nov 1998 |
| 21763 | Pena Bros. Oil And Gas, LLC | Odessa, TX 79764 | Oil Operator | Sep 2026 |
| 21764 | Pend Oreille Oil & Gas Company | | Oil & Gas Operator | Sep 1989 |
| 21765 | Pendergraft Oil Co. | Lueders, TX 79533 | Oil & Gas Operator | Jan 1998 |
| 21766 | Pendleton Land & | | Oil Operator | Aug 1985 |
| 21767 | Pendolino Resources, LLC | Dallas, TX 75209 | Gas Operator | Mar 2023 |
| 21768 | Pendragon Energy Partners Inc | Midland, TX 79701 | Oil & Gas Operator | Nov 2009 |
| 21769 | Pendragon Oil Co. | Fort Worth, TX 76116 | Oil & Gas Operator | Sep 2026 |
| 21770 | Pendulum Petrole | | Oil & Gas Operator | Dec 1995 |
| 21771 | Pendulum Petroleum, Inc. | Pinedale, WY 82941 | Oil Operator | Aug 1999 |
| 21772 | Penequine Ranch | | Gas Operator | Sep 2019 |
| 21773 | Penergy | Midland, TX 79710 | Oil & Gas Operator | Sep 2026 |
| 21774 | Pengo Petroleum Inc | | Oil & Gas Operator | Dec 2013 |
| 21775 | Pengo Petroleum, Inc. & J.W.S. | | Oil & Gas Operator | Jul 1977 |
| 21776 | Pengo Producing Company | | Oil & Gas Operator | Mar 1987 |
| 21777 | Peninsula Group Inc | Peninsula, OH 44264 | Oil & Gas Operator | Dec 1991 |
| 21778 | Peninsula Open Space Trust | | Oil & Gas Operator | Dec 2008 |
| 21779 | Peninsular Oil & Gas Co | Ada, MI 49301 | Oil & Gas Operator | Dec 2001 |
| 21780 | Penn Homa Oil & Gas Co | Edmond, OK 73083 | Oil & Gas Operator | Oct 2013 |
| 21781 | Penn Inc. | | Oil & Gas Operator | Dec 2004 |
| 21782 | Penn Production Company Inc | | Oil & Gas Operator | Nov 2014 |
| 21783 | Penn Resources, Inc. | | Oil & Gas Operator | Sep 1987 |
| 21784 | Penn VIew Exploration Inc | Blairsville, PA 15717-7961 | Oil & Gas Operator | Jun 2026 |
| 21785 | Penn VIrginia MC Operating Co LLC | Houston, TX 77084-7213 | Oil & Gas Operator | Sep 2025 |
| 21786 | Penn VIrginia Oil & Gas Corp | Houston, TX 77024 | Oil & Gas Operator | Dec 2023 |
| 21787 | Penn VIrginia Oil & Gas, L.P. | Houston, TX 77084 | Oil & Gas Operator | Nov 2022 |
| 21788 | Penn, G. R. Production Co. | McPherson, KS 67460 | Gas Operator | Nov 1997 |
| 21789 | Penn-Ohio Investment Corp. | New Philadelphi, OH 44663 | Oil & Gas Operator | Dec 2004 |
| 21790 | Pennaco Energy Incorporated | Gillette, WY 82718 | Oil & Gas Operator | Feb 2021 |
| 21791 | Pennant Dev. And Prod., LLC | Midland, TX 79702 | Oil Operator | Sep 2026 |
| 21792 | Pennant Energy LLC | Oklahoma City, OK 73116 | Oil Operator | Dec 2024 |
| 21793 | Pennant Oil & Gas LLC | Oklahma City, OK 73159-6905 | Oil & Gas Operator | Jan 2024 |
| 21794 | Pennant Petroleum Corporation | | Oil Operator | Dec 2002 |
| 21795 | Penneco Exploration Company Of Wyo LLC | Delmont, PA 15626 | Oil Operator | Aug 2021 |
| 21796 | Penneco Oil Company, Inc. | Delmont, PA 15626-2408 | Oil & Gas Operator | Dec 2025 |
| 21797 | Pennenergy Resources LLC | Pittsburgh, PA 15275-1063 | Oil & Gas Operator | Jun 2026 |
| 21798 | Penner Energy Inc | Oklahoma City, OK 73120-1930 | Oil & Gas Operator | Jul 2026 |
| 21799 | Pennfield Energy LLC | Erie, PA 16510-4760 | Oil & Gas Operator | Dec 2021 |
| 21800 | Pennhills Resources LLC | MT. Jewett, PA 16740 | Oil & Gas Operator | Jun 2026 |