| 21801 | Pelican Producing Inc | Caldwell, OH 43724 | Oil & Gas Operator | Dec 1996 |
| 21802 | Pelican Production Company | New Orleans, LA 70130-2477 | Oil & Gas Operator | Mar 2014 |
| 21803 | Pelican Resource | | Oil Operator | Jan 1991 |
| 21804 | Pelico Pipeline, LLC | | Oil Operator | Dec 2024 |
| 21805 | Pelletter, James J & Weist, Richard M | Fredonia, NY 14063 | Gas Operator | Dec 2025 |
| 21806 | Pelto Oil Company | Houston, TX 77002 | Oil & Gas Operator | Nov 1998 |
| 21807 | Pemberton, W. C. Oil Co., Inc. | Cameron, TX 76520 | Oil & Gas Operator | Jul 2026 |
| 21808 | Pembroke Central School District | Corfu, NY 14036 | Gas Operator | Dec 2025 |
| 21809 | Pembrook Oil Company | Big Lake, TX 76932 | Oil & Gas Operator | May 1999 |
| 21810 | Pembrooke Oil & Gas Inc | Franklin, PA 16323-7760 | Oil & Gas Operator | Dec 2025 |
| 21811 | Pemco Gas Inc | Indian Harbor B, FL 32937 | Oil & Gas Operator | Dec 1997 |
| 21812 | Pemco LLC | Skiatook, OK 74070 | Oil Operator | Apr 2026 |
| 21813 | Pemex Inc | Dallas, TX 75367-0249 | Oil & Gas Operator | Nov 2015 |
| 21814 | Pen-Tex Production Co. Inc. | Penwell, TX 79776 | Oil & Gas Operator | Jul 2026 |
| 21815 | Pen-Tex Production Co. L.L.C. | Penwell, TX 79776 | Oil & Gas Operator | Nov 1998 |
| 21816 | Pend Oreille Oil & Gas Company | | Oil & Gas Operator | Sep 1989 |
| 21817 | Pendergraft Oil Co. | Lueders, TX 79533 | Oil & Gas Operator | Jan 1998 |
| 21818 | Pendleton Land & | | Oil Operator | Aug 1985 |
| 21819 | Pendolino Resources, LLC | Dallas, TX 75209 | Gas Operator | Mar 2023 |
| 21820 | Pendragon Energy Partners Inc | Midland, TX 79701 | Oil & Gas Operator | Nov 2009 |
| 21821 | Pendragon Oil Co. | Fort Worth, TX 76116 | Oil & Gas Operator | Jul 2026 |
| 21822 | Pendulum Petrole | | Oil & Gas Operator | Dec 1995 |
| 21823 | Pendulum Petroleum, Inc. | Pinedale, WY 82941 | Oil Operator | Aug 1999 |
| 21824 | Penequine Ranch | | Gas Operator | Sep 2019 |
| 21825 | Penergy | Midland, TX 79710 | Oil & Gas Operator | Jul 2026 |
| 21826 | Pengo Petroleum Inc | | Oil & Gas Operator | Dec 2013 |
| 21827 | Pengo Petroleum, Inc. & J.W.S. | | Oil & Gas Operator | Jul 1977 |
| 21828 | Pengo Producing Company | | Oil & Gas Operator | Mar 1987 |
| 21829 | Peninsula Group Inc | Peninsula, OH 44264 | Oil & Gas Operator | Dec 1991 |
| 21830 | Peninsula Open Space Trust | | Oil & Gas Operator | Dec 2008 |
| 21831 | Peninsular Oil & Gas Co | Ada, MI 49301 | Oil & Gas Operator | Dec 2001 |
| 21832 | Penn Homa Oil & Gas Co | Edmond, OK 73083 | Oil & Gas Operator | Oct 2013 |
| 21833 | Penn Inc. | | Oil & Gas Operator | Dec 2004 |
| 21834 | Penn Production Company Inc | | Oil & Gas Operator | Nov 2014 |
| 21835 | Penn Resources, Inc. | Dallas, TX 75219 | Oil & Gas Operator | Sep 1987 |
| 21836 | Penn VIew Exploration Inc | Blairsville, PA 15717-7961 | Oil & Gas Operator | Apr 2026 |
| 21837 | Penn VIrginia MC Operating Co LLC | Houston, TX 77084-7213 | Oil & Gas Operator | Sep 2025 |
| 21838 | Penn VIrginia Oil & Gas Corp | Houston, TX 77024 | Oil & Gas Operator | Dec 2023 |
| 21839 | Penn VIrginia Oil & Gas, L.P. | Houston, TX 77084 | Oil & Gas Operator | Nov 2022 |
| 21840 | Penn, G. R. Production Co. | McPherson, KS 67460 | Gas Operator | Nov 1997 |
| 21841 | Penn-Ohio Investment Corp. | New Philadelphi, OH 44663 | Oil & Gas Operator | Dec 2004 |
| 21842 | Pennaco Energy Incorporated | Gillette, WY 82718 | Oil & Gas Operator | Feb 2021 |
| 21843 | Pennant Dev. And Prod., LLC | Midland, TX 79702 | Oil Operator | Jul 2026 |
| 21844 | Pennant Energy LLC | Oklahoma City, OK 73116 | Oil Operator | Dec 2024 |
| 21845 | Pennant Oil & Gas LLC | Oklahma City, OK 73159-6905 | Oil & Gas Operator | Jan 2024 |
| 21846 | Pennant Petroleum Corporation | | Oil Operator | Dec 2002 |
| 21847 | Pennartz Productions, LLC. | Jacksboro, TX 76458 | Oil Operator | Feb 2026 |
| 21848 | Penneco Exploration Company Of Wyo LLC | Delmont, PA 15626 | Oil Operator | Aug 2021 |
| 21849 | Penneco Oil Company, Inc. | Delmont, PA 15626-2408 | Oil & Gas Operator | Dec 2025 |
| 21850 | Pennenergy Resources LLC | Pittsburgh, PA 15275-1063 | Oil & Gas Operator | Apr 2026 |
| 21851 | Penner Energy Inc | Oklahoma City, OK 73120-1930 | Oil & Gas Operator | May 2026 |
| 21852 | Pennfield Energy LLC | Erie, PA 16510-4760 | Oil & Gas Operator | Dec 2021 |
| 21853 | Pennhills Resources LLC | MT. Jewett, PA 16740 | Oil & Gas Operator | Apr 2026 |
| 21854 | Pennine Resc Inc | | Oil Operator | Sep 1992 |
| 21855 | Pennington Oil & Gas Int, LLC | | Oil & Gas Operator | Dec 2024 |
| 21856 | Pennington Operating Company, LLC | | Oil & Gas Operator | Jul 2020 |
| 21857 | Pennington, W. L., Inc. | Wichita Falls, TX 76301 | Oil & Gas Operator | Jul 1996 |
| 21858 | Pennmark Resources Company | Edmond, OK 73013 | Oil & Gas Operator | Apr 2026 |
| 21859 | Penntex Petroleum Corporation | Austin, TX 78731 | Oil & Gas Operator | Jul 2026 |
| 21860 | Penntex Resources, L.P. | State College, PA 16803 | Oil & Gas Operator | Mar 2016 |
| 21861 | Penny, Ralph E. | White Plains, NY 10601 | Oil & Gas Operator | Jul 2023 |
| 21862 | Pennzenergy | Houston, TX 77252 | Oil & Gas Operator | Dec 1986 |
| 21863 | Pennzenergy Exp. & Prod., L.L.C. | Houston, TX 77210 | Oil & Gas Operator | Mar 2000 |
| 21864 | Pennzenergy Explor & Prod LLC | | Oil & Gas Operator | Dec 1999 |
| 21865 | Pennzenergy Exploration And Production LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Dec 2009 |
| 21866 | Pennzoil Company | Midland, TX 79710-0090 | Oil & Gas Operator | Mar 2000 |
| 21867 | Pennzoil E & P & M H Marr | | Oil & Gas Operator | Sep 1993 |
| 21868 | Pennzoil E & P Co - Arco | | Oil & Gas Operator | Dec 1993 |
| 21869 | Pennzoil E & P Co - Clark Oil | | Oil & Gas Operator | Apr 1980 |
| 21870 | Pennzoil E & P Co Et Al | | Oil & Gas Operator | Feb 1999 |
| 21871 | Pennzoil E & P Co-Sohio Et Al | | Oil & Gas Operator | Jun 1991 |
| 21872 | Pennzoil E & P Co-Sohio Petr | | Oil & Gas Operator | Feb 1999 |
| 21873 | Pennzoil Expl & Prod Co -TX | | Oil & Gas Operator | May 1993 |
| 21874 | Pennzoil Expl & Prod Co. -MS | | Oil Operator | Jan 1988 |
| 21875 | Pennzoil Explor & Prod Co | Houston, TX 77002 | Oil & Gas Operator | Mar 2000 |
| 21876 | Pennzoil Exploration & Production Co. | Carthage, TX 75633 | Oil & Gas Operator | Mar 2008 |
| 21877 | Pennzoil Petroleum Company | Houston, TX 77252 | Oil & Gas Operator | Nov 1999 |
| 21878 | Pennzoil Prod Co | Vienna, WV 26105-2141 | Oil & Gas Operator | Dec 2000 |
| 21879 | Pennzoil Producing Company | | Oil & Gas Operator | Oct 1992 |
| 21880 | Penroc Oil Corp. | Hobbs, NM 88241 | Oil & Gas Operator | May 2026 |
| 21881 | Penrod Oil Company Of Texas, Inc | Milano, TX 76556 | Oil & Gas Operator | Jul 2026 |
| 21882 | Pense Brothers Drilling | | Oil Operator | Dec 1998 |
| 21883 | Pentad Development Corp. (A) | Dallas, TX 75201 | Oil & Gas Operator | Mar 1993 |
| 21884 | Pentagon Petroleum, Inc. | | Oil & Gas Operator | Sep 1991 |
| 21885 | Pentarch Petroleum | | Oil Operator | May 2026 |
| 21886 | Pentergy Operating, LLC | New Braunfels, TX 78132 | Oil & Gas Operator | Jul 2026 |
| 21887 | Pentex Energy, Inc. | Midland, TX 79701 | Oil & Gas Operator | Dec 2003 |
| 21888 | Pentex Operating Company | Oklahoma City, OK 73132 | Oil & Gas Operator | Oct 1994 |
| 21889 | Penton And Penton | | Oil & Gas Operator | Jan 1983 |
| 21890 | Penwell Energy, Inc. | Houston, TX 77057 | Oil & Gas Operator | Jul 2026 |
| 21891 | Penwell South Operating LLC | Austin, TX 78746 | Oil & Gas Operator | Jul 2026 |
| 21892 | Peoco LLC | | Gas Operator | May 2026 |
| 21893 | Peoples Bank & Trust Company | McPherson, KS 67460 | Oil Operator | Jan 2013 |
| 21894 | Peoples Energy Prod.-TX, L.P. | Houston, TX 77002 | Oil & Gas Operator | Sep 2007 |
| 21895 | Peoples Energy Production-Texas, L.P. | Houston, TX 77010 | Oil & Gas Operator | Oct 2007 |
| 21896 | Peoples Gas Co LLC | Butler, PA 16001-4904 | Oil & Gas Operator | Dec 2005 |
| 21897 | Peoples Natural Gas Co LLC | Pittsburgh, PA 15212 | Gas Operator | Dec 2016 |
| 21898 | Peoples Oil, LLC | Ottawa, KS 66067 | Oil Operator | Mar 2026 |
| 21899 | Pep Drilling LLC | MT Vernon, IL 62864 | Oil & Gas Operator | Dec 2024 |
| 21900 | Pepin Oil Co | Stillwater, OK 74076 | Oil & Gas Operator | Oct 2013 |