| 21801 | Pennine Resc Inc | | Oil Operator | Sep 1992 |
| 21802 | Pennington Oil & Gas Int, LLC | | Oil & Gas Operator | Dec 2024 |
| 21803 | Pennington Operating Company, LLC | | Oil & Gas Operator | Jul 2020 |
| 21804 | Pennington, W. L., Inc. | Wichita Falls, TX 76301 | Oil & Gas Operator | Jul 1996 |
| 21805 | Pennmark Resources Company | Edmond, OK 73013 | Oil & Gas Operator | Jun 2026 |
| 21806 | Penntex Petroleum Corporation | Austin, TX 78731 | Oil & Gas Operator | Sep 2026 |
| 21807 | Penntex Resources, L.P. | State College, PA 16803 | Oil & Gas Operator | Mar 2016 |
| 21808 | Penny, Ralph E. | White Plains, NY 10601 | Oil & Gas Operator | Jul 2023 |
| 21809 | Pennzenergy | Houston, TX 77252 | Oil & Gas Operator | Dec 1986 |
| 21810 | Pennzenergy Exp. & Prod., L.L.C. | Houston, TX 77210 | Oil & Gas Operator | Mar 2000 |
| 21811 | Pennzenergy Explor & Prod LLC | | Oil & Gas Operator | Dec 1999 |
| 21812 | Pennzenergy Exploration And Production LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Dec 2009 |
| 21813 | Pennzoil Company | Midland, TX 79710-0090 | Oil & Gas Operator | Mar 2000 |
| 21814 | Pennzoil E & P & M H Marr | | Oil & Gas Operator | Sep 1993 |
| 21815 | Pennzoil E & P Co - Arco | | Oil & Gas Operator | Dec 1993 |
| 21816 | Pennzoil E & P Co - Clark Oil | | Oil & Gas Operator | Apr 1980 |
| 21817 | Pennzoil E & P Co Et Al | | Oil & Gas Operator | Feb 1999 |
| 21818 | Pennzoil E & P Co-Sohio Et Al | | Oil & Gas Operator | Jun 1991 |
| 21819 | Pennzoil E & P Co-Sohio Petr | | Oil & Gas Operator | Feb 1999 |
| 21820 | Pennzoil Expl & Prod Co -TX | | Oil & Gas Operator | May 1993 |
| 21821 | Pennzoil Expl & Prod Co. -MS | | Oil Operator | Jan 1988 |
| 21822 | Pennzoil Explor & Prod Co | Houston, TX 77002 | Oil & Gas Operator | Mar 2000 |
| 21823 | Pennzoil Exploration & Production Co. | Carthage, TX 75633 | Oil & Gas Operator | Mar 2008 |
| 21824 | Pennzoil Petroleum Company | Houston, TX 77252 | Oil & Gas Operator | Nov 1999 |
| 21825 | Pennzoil Prod Co | | Oil & Gas Operator | Dec 2000 |
| 21826 | Pennzoil Producing Company | | Oil & Gas Operator | Oct 1992 |
| 21827 | Penroc Oil Corp. | Hobbs, NM 88241 | Oil & Gas Operator | Jun 2026 |
| 21828 | Penrod Oil Company Of Texas, Inc | Milano, TX 76556 | Oil & Gas Operator | Sep 2026 |
| 21829 | Pense Brothers Drilling | | Oil Operator | Dec 1998 |
| 21830 | Pentad Development Corp. (A) | Dallas, TX 75201 | Oil & Gas Operator | Mar 1993 |
| 21831 | Pentagon Petroleum, Inc. | | Oil & Gas Operator | Sep 1991 |
| 21832 | Pentarch Petroleum | | Oil Operator | Jun 2026 |
| 21833 | Pentergy Operating, LLC | New Braunfels, TX 78132 | Oil & Gas Operator | Sep 2026 |
| 21834 | Pentex Energy, Inc. | Midland, TX 79701 | Oil & Gas Operator | Dec 2003 |
| 21835 | Pentex Operating Company | Oklahoma City, OK 73132 | Oil & Gas Operator | Oct 1994 |
| 21836 | Penton And Penton | | Oil & Gas Operator | Jan 1983 |
| 21837 | Penwell Energy, Inc. | Houston, TX 77057 | Oil & Gas Operator | Sep 2026 |
| 21838 | Penwell South Operating LLC | Austin, TX 78746 | Oil & Gas Operator | Sep 2026 |
| 21839 | Peoco LLC | | Gas Operator | Jul 2026 |
| 21840 | Peoples Bank & Trust Company | McPherson, KS 67460 | Oil Operator | Jan 2013 |
| 21841 | Peoples Energy Prod.-TX, L.P. | Houston, TX 77002 | Oil & Gas Operator | Sep 2007 |
| 21842 | Peoples Energy Production-Texas, L.P. | Houston, TX 77010 | Oil & Gas Operator | Oct 2007 |
| 21843 | Peoples Gas Co LLC | Butler, PA 16001-4904 | Oil & Gas Operator | Dec 2005 |
| 21844 | Peoples Natural Gas Co LLC | Pittsburgh, PA 15212 | Gas Operator | Dec 2016 |
| 21845 | Peoples Oil, LLC | Ottawa, KS 66067 | Oil Operator | May 2026 |
| 21846 | Pep Drilling LLC | MT Vernon, IL 62864 | Oil & Gas Operator | Dec 2025 |
| 21847 | Pepin Oil Co | Stillwater, OK 74076 | Oil & Gas Operator | Oct 2013 |
| 21848 | Pepin Operating Company Inc | Stillwater, OK 74075-9535 | Oil & Gas Operator | May 2009 |
| 21849 | Pepper Oil Co | Newark, OH 43055 | Oil & Gas Operator | Dec 1992 |
| 21850 | Perception Vac Services LLC | Ira, TX 79527 | Oil Operator | Sep 2026 |
| 21851 | Percussion Petroleum Oper II,LLC | Houston, TX 77042 | Oil & Gas Operator | Jul 2023 |
| 21852 | Percussion Petroleum Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | Jun 2019 |
| 21853 | Perdido Energy Louisiana, LLC | | Oil & Gas Operator | Dec 2024 |
| 21854 | Perdido Energy, LLC | Houston, TX 77251 | Oil & Gas Operator | Sep 2026 |
| 21855 | Perdue-Davidson Oil Co | | Oil & Gas Operator | Dec 2021 |
| 21856 | Perdura Energy L.L.C. | | Oil & Gas Operator | Apr 2018 |
| 21857 | Perdure Petroleum LLC | Allen, TX 75013 | Oil & Gas Operator | Oct 2021 |
| 21858 | Peregrine Energy, Inc. | Spring, TX 77393 | Oil & Gas Operator | Jul 1999 |
| 21859 | Peregrine Petroleum Corp | Oklahoma City, OK 73116-7639 | Oil & Gas Operator | May 2020 |
| 21860 | Peregrine Petroleum Partners, LTD | | Oil & Gas Operator | Oct 2021 |
| 21861 | Peregrine Petroleum PRTNR, LTD. | Dallas, TX 75201 | Oil & Gas Operator | Sep 2026 |
| 21862 | Perenco LLC | Houston, TX 77002 | Oil & Gas Operator | Apr 2005 |
| 21863 | Perera Ray & Den | | Oil Operator | Sep 1994 |
| 21864 | Perez, H. F. | Alice, TX 78332 | Oil & Gas Operator | May 2023 |
| 21865 | Performance Energy Partners LLC | Barnsdall, OK 74002-0628 | Oil & Gas Operator | Sep 2025 |
| 21866 | Performance Operating Company LLC | Barnsdall, OK 74002 | Oil & Gas Operator | Jun 2026 |
| 21867 | Performance Operating Partners, LLC | Shreveport, LA 71164 | Oil & Gas Operator | Sep 2026 |
| 21868 | Performance Petroleum Company LLC | Barnsdall, OK 74002 | Oil & Gas Operator | Jun 2026 |
| 21869 | Pergerson Energy, L.L.C. | Richmond, VA 23225 | Oil Operator | Sep 2026 |
| 21870 | Perimeter Resource Company | Midland, TX 79702 | Oil & Gas Operator | Sep 2026 |
| 21871 | Periscope Operating LLC | McKinney, TX 75069 | Oil & Gas Operator | Jun 2020 |
| 21872 | Perkins Energy Company | Duncan, OK 73533-3853 | Oil & Gas Operator | Jul 2026 |
| 21873 | Perkins Mike | Velma, OK 73091 | Oil & Gas Operator | Jan 2006 |
| 21874 | Perkins Nova | Atwood, OK 74827-9738 | Oil Operator | Feb 2014 |
| 21875 | Perkins Oil & Gas Inc | Pennsboro, WV 264150547 | Oil & Gas Operator | Dec 2021 |
| 21876 | Perkins Oil Comp | | Oil Operator | Nov 1988 |
| 21877 | Perkins Oil Ente | | Oil & Gas Operator | Dec 1995 |
| 21878 | Perkins Oil Enterprises, Inc. | Howard, KS 67349 | Oil & Gas Operator | Oct 2021 |
| 21879 | Perkins Oil Properties | | Oil & Gas Operator | Nov 2024 |
| 21880 | Perkins Production Company LLC | Pennsboro, WV 26415 | Oil & Gas Operator | Dec 2021 |
| 21881 | Perkins, Bobby R | | Oil Operator | Mar 2017 |
| 21882 | Perkins, Don & Assoc, Inc | | Oil Operator | Dec 2011 |
| 21883 | Perkins, Earl | | Oil & Gas Operator | Aug 2013 |
| 21884 | Perkins, Eugene O. | Boerne, TX 78015 | Oil & Gas Operator | Sep 2026 |
| 21885 | Perkins-Prothro Company | Wichita Falls, TX 76308 | Oil & Gas Operator | May 2002 |
| 21886 | Perlman,I.H.Oil & Gas Properties | Houston, TX 77056 | Oil & Gas Operator | Mar 2008 |
| 21887 | Permeator Corp. | | Oil Operator | Sep 1990 |
| 21888 | Permex Petroleum Company, LLC | Dallas, TX 75201 | Oil & Gas Operator | Mar 2024 |
| 21889 | Permex Petroleum Corporation | Graham, TX 76450 | Oil & Gas Operator | Sep 2026 |
| 21890 | Permian Basin Oil Corporation | Odessa, TX 79762 | Oil & Gas Operator | Sep 2026 |
| 21891 | Permian Deep Rock Oil Co., LLC | Midland, TX 79702 | Oil & Gas Operator | Sep 2026 |
| 21892 | Permian Development, Inc. | Midland, TX 79701 | Oil & Gas Operator | Mar 2008 |
| 21893 | Permian Legend LLC | San Marcos, TX 78666 | Oil Operator | Sep 2026 |
| 21894 | Permian Natural Resources | Tyler, TX 75701 | Oil & Gas Operator | Sep 2026 |
| 21895 | Permian Pacific Resources, Inc. | Dallas, TX 75230 | Oil & Gas Operator | Aug 2003 |
| 21896 | Permian Resources Operating, LLC | Midland, TX 79701 | Oil & Gas Operator | Sep 2026 |
| 21897 | Permian Resources, Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 21898 | Permian Resources, LLC | Houston, TX 77002 | Oil & Gas Operator | Mar 2018 |
| 21899 | Permian Roustabout & Oilfield Services LLC | Blanchard, OK 73010 | Oil & Gas Operator | Feb 2024 |
| 21900 | Permian Services Co., LLC | Midland, TX 79702 | Oil & Gas Operator | Sep 2013 |