| 21801 | Pen-Tex Production Co. Inc. | Penwell, TX 79776 | Oil & Gas Operator | Sep 2024 |
| 21802 | Pen-Tex Production Co. L.L.C. | Penwell, TX 79776 | Oil & Gas Operator | Nov 1998 |
| 21803 | Pena Bros. Oil And Gas, LLC | Odessa, TX 79764 | Oil Operator | Sep 2024 |
| 21804 | Pend Oreille Oil & Gas Company | | Oil & Gas Operator | Sep 1989 |
| 21805 | Pendergraft Oil Co. | Lueders, TX 79533 | Oil & Gas Operator | Jan 1998 |
| 21806 | Pendleton Land & | | Oil Operator | Aug 1985 |
| 21807 | Pendragon Energy Partners Inc | Midland, TX 79701 | Oil & Gas Operator | Nov 2009 |
| 21808 | Pendragon Oil Co. | Fort Worth, TX 76116 | Oil & Gas Operator | Sep 2024 |
| 21809 | Pendulum Petrole | | Oil & Gas Operator | Dec 1995 |
| 21810 | Pendulum Petroleum, Inc. | Pinedale, WY 82941 | Oil Operator | Aug 1999 |
| 21811 | Penergy | Midland, TX 79710 | Oil & Gas Operator | Sep 2024 |
| 21812 | Pengo Petroleum, Inc. | | Oil & Gas Operator | Dec 2013 |
| 21813 | Pengo Petroleum, Inc. & J.W.S. | | Oil & Gas Operator | Jul 1977 |
| 21814 | Pengo Producing Company | | Oil & Gas Operator | Mar 1987 |
| 21815 | Peninsula Group Inc | Peninsula, OH 44264 | Oil & Gas Operator | Dec 1991 |
| 21816 | Peninsula Open Space Trust | | Oil & Gas Operator | Dec 2008 |
| 21817 | Peninsular Oil & Gas Co | Ada, MI 49301-96-96 | Oil & Gas Operator | Dec 2001 |
| 21818 | Penn Homa Oil & Gas Co | Edmond, OK 73083 | Oil & Gas Operator | Oct 2013 |
| 21819 | Penn Inc. | | Oil & Gas Operator | Dec 2004 |
| 21820 | Penn Production Company Inc | | Oil & Gas Operator | Nov 2014 |
| 21821 | Penn Resources, Inc. | Dallas, TX 75219 | Oil & Gas Operator | Sep 1987 |
| 21822 | Penn VIew Exploration Inc | Blairsville, PA 15717-7961 | Oil & Gas Operator | Dec 2023 |
| 21823 | Penn VIrginia MC Energy, LLC | Tulsa, OK 74119 | Gas Operator | Jul 2009 |
| 21824 | Penn VIrginia MC Operating Co LLC | Houston, TX 77084-7213 | Oil & Gas Operator | Jun 2024 |
| 21825 | Penn VIrginia Oil & Gas Corp | Houston, TX 77024 | Oil & Gas Operator | Dec 2018 |
| 21826 | Penn VIrginia Oil & Gas, L.P. | Houston, TX 77084 | Oil & Gas Operator | Nov 2022 |
| 21827 | Penn, G. R. Production Co. | McPherson, KS 67460 | Gas Operator | Nov 1997 |
| 21828 | Penn-Ind Oil Co | | Oil Operator | Dec 2022 |
| 21829 | Penn-Ohio Investment Corp. | New Philadelphi, OH 44663 | Oil & Gas Operator | Dec 2004 |
| 21830 | Pennaco Energy Incorporated | Gillette, WY 82718 | Oil & Gas Operator | Feb 2021 |
| 21831 | Pennant Dev. And Prod., LLC | Midland, TX 79702 | Oil Operator | Sep 2024 |
| 21832 | Pennant Energy LLC | Oklahoma City, OK 73116 | Oil Operator | Oct 2023 |
| 21833 | Pennant Oil & Gas LLC | Oklahma City, OK 73159-6905 | Oil & Gas Operator | Jan 2024 |
| 21834 | Pennant Petroleum Corporation | | Oil Operator | Dec 2002 |
| 21835 | Pennartz Productions, LLC. | Jacksboro, TX 76458 | Oil Operator | Sep 2024 |
| 21836 | Penneco Exploration Company Of Wyo LLC | Delmont, PA 15626 | Oil Operator | Aug 2021 |
| 21837 | Penneco Oil Company, Inc. | Delmont, PA 15626-2408 | Oil & Gas Operator | Dec 2023 |
| 21838 | Pennenergy Resources LLC | Pittsburgh, PA 15275-1063-1063 | Oil & Gas Operator | Jul 2024 |
| 21839 | Penner Energy Inc | Oklahoma City, OK 73120-1930 | Oil & Gas Operator | Jul 2024 |
| 21840 | Pennfield Energy LLC | Erie, PA 16510-4760 | Oil & Gas Operator | Dec 2021 |
| 21841 | Pennhills Resources LLC | MT. Jewett, PA 16740 | Oil & Gas Operator | Jul 2024 |
| 21842 | Pennine Resc Inc | | Oil Operator | Sep 1992 |
| 21843 | Pennington Oil & Gas Int, LLC | | Oil & Gas Operator | Dec 2023 |
| 21844 | Pennington Operating Company, LLC | | Oil & Gas Operator | Jul 2020 |
| 21845 | Pennington Refining LLC | Grand Prairie, TX 75051 | Oil Operator | Sep 2024 |
| 21846 | Pennington, W. L., Inc. | Wichita Falls, TX 76301 | Oil & Gas Operator | Jul 1996 |
| 21847 | Pennmark Resources Company | Edmond, OK 73013 | Oil & Gas Operator | Jun 2024 |
| 21848 | Penntex Petroleum Corporation | Austin, TX 78731 | Oil & Gas Operator | Sep 2024 |
| 21849 | Penntex Resources, L.P. | State College, PA 16803 | Oil & Gas Operator | Mar 2016 |
| 21850 | Penny, Ralph E. | White Plains, NY 10601 | Oil & Gas Operator | Jul 2023 |
| 21851 | Pennzenergy | Houston, TX 77252 | Oil & Gas Operator | Dec 1986 |
| 21852 | Pennzenergy Exp. & Prod., L.L.C. | Houston, TX 77210 | Oil & Gas Operator | Mar 2000 |
| 21853 | Pennzenergy Explor & Prod LLC | | Oil & Gas Operator | Dec 1999 |
| 21854 | Pennzenergy Exploration & Production LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Dec 2009 |
| 21855 | Pennzoil Company | Midland, TX 79710-0090 | Oil & Gas Operator | Mar 2000 |
| 21856 | Pennzoil E & P & M H Marr | | Oil & Gas Operator | Sep 1993 |
| 21857 | Pennzoil E & P Co - Arco | | Oil & Gas Operator | Dec 1993 |
| 21858 | Pennzoil E & P Co - Clark Oil | | Oil & Gas Operator | Apr 1980 |
| 21859 | Pennzoil E & P Co Et Al | | Oil & Gas Operator | Feb 1999 |
| 21860 | Pennzoil E & P Co-Sohio Et Al | | Oil & Gas Operator | Jul 1991 |
| 21861 | Pennzoil E & P Co-Sohio Petr | | Oil & Gas Operator | Feb 1999 |
| 21862 | Pennzoil Expl & Prod Co -TX | | Oil & Gas Operator | May 1993 |
| 21863 | Pennzoil Expl & Prod Co. -MS | | Oil Operator | Jan 1988 |
| 21864 | Pennzoil Explor & Prod Co | Houston, TX 77002 | Oil & Gas Operator | Mar 2000 |
| 21865 | Pennzoil Exploration & Production Co. | Carthage, TX 75633 | Oil & Gas Operator | Mar 2008 |
| 21866 | Pennzoil Petroleum Company | Houston, TX 77252 | Oil & Gas Operator | Nov 1999 |
| 21867 | Pennzoil Prod Co | Vienna, WV 26105-2141 | Oil & Gas Operator | Dec 2000 |
| 21868 | Pennzoil Producing Company | | Oil & Gas Operator | Oct 1992 |
| 21869 | Penroc Oil Corp. | Hobbs, NM 88241 | Oil & Gas Operator | Jun 2024 |
| 21870 | Penrod Oil Company Of Texas, Inc | Milano, TX 76556 | Oil & Gas Operator | Sep 2024 |
| 21871 | Pense Brothers Drilling | | Oil Operator | Dec 1998 |
| 21872 | Pentad Development Corp. (A) | Dallas, TX 75201 | Oil & Gas Operator | Mar 1993 |
| 21873 | Pentagon Petroleum, Inc. | | Oil & Gas Operator | Sep 1991 |
| 21874 | Pentarch Petroleum | | Oil Operator | Jul 2024 |
| 21875 | Pentergy Operating, LLC | New Braunfels, TX 78132 | Oil & Gas Operator | Sep 2024 |
| 21876 | Pentex Energy, Inc. | Midland, TX 79701 | Oil & Gas Operator | Dec 2003 |
| 21877 | Pentex Operating Company | Oklahoma City, OK 73132 | Oil & Gas Operator | Oct 1994 |
| 21878 | Penton And Penton | | Oil & Gas Operator | Jan 1983 |
| 21879 | Pentress Gas LLC | Pentress, WV 26544 | Gas Operator | Dec 2021 |
| 21880 | Penwell Energy, Inc. | Houston, TX 77057 | Oil & Gas Operator | Sep 2024 |
| 21881 | Peoco LLC | | Gas Operator | Jun 2024 |
| 21882 | Peoples Bank & Trust Company | McPherson, KS 67460 | Oil Operator | Jan 2013 |
| 21883 | Peoples Energy Prod.-TX, L.P. | Houston, TX 77002 | Oil & Gas Operator | Sep 2007 |
| 21884 | Peoples Energy Production-Texas, L.P. | Houston, TX 77010 | Oil & Gas Operator | Oct 2007 |
| 21885 | Peoples Gas Co LLC | Butler, PA 16001-4904 | Oil & Gas Operator | Dec 2005 |
| 21886 | Peoples Ice Inc | | Oil & Gas Operator | Nov 1997 |
| 21887 | Peoples Natural Gas Co LLC | Pittsburgh, PA 15212 | Gas Operator | Dec 2016 |
| 21888 | Peoples Oil, LLC | Ottawa, KS 66067 | Oil Operator | May 2024 |
| 21889 | Pep Drilling LLC | MT Vernon, IL 62864 | Oil & Gas Operator | Dec 2022 |
| 21890 | Pepin Oil Co | Stillwater, OK 74076 | Oil & Gas Operator | Oct 2013 |
| 21891 | Pepin Operating Company Inc | Stillwater, OK 74075-9535 | Oil & Gas Operator | May 2009 |
| 21892 | Pepper Development, LLC | Clarksburg, WV 26302 | Oil & Gas Operator | Dec 2021 |
| 21893 | Pepper Oil Co | Newark, OH 43055 | Oil & Gas Operator | Dec 1992 |
| 21894 | Percussion Petroleum Oper II,LLC | Houston, TX 77042 | Oil & Gas Operator | Jul 2023 |
| 21895 | Percussion Petroleum Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | Jun 2019 |
| 21896 | Perdido Energy Louisiana, LLC | | Oil & Gas Operator | Dec 2023 |
| 21897 | Perdido Energy, LLC | Houston, TX 77251 | Oil & Gas Operator | Sep 2024 |
| 21898 | Perdue-Davidson Oil Co | | Oil & Gas Operator | Dec 2021 |
| 21899 | Perdura Energy L.L.C. | | Oil & Gas Operator | Apr 2018 |
| 21900 | Perdure Petroleum LLC | Allen, TX 75013 | Oil & Gas Operator | Oct 2021 |