| 21801 | Perkins-Prothro Company | Wichita Falls, TX 76308 | Oil & Gas Operator | May 2002 |
| 21802 | Perlman,I.H.Oil & Gas Properties | Houston, TX 77056 | Oil & Gas Operator | Mar 2008 |
| 21803 | Permeator Corp. | | Oil Operator | Sep 1990 |
| 21804 | Permex Petroleum Company, LLC | Dallas, TX 75201 | Oil & Gas Operator | Mar 2024 |
| 21805 | Permex Petroleum Corporation | Graham, TX 76450 | Oil & Gas Operator | Jun 2026 |
| 21806 | Permian Basin Oil Corporation | Odessa, TX 79762 | Oil & Gas Operator | Jun 2026 |
| 21807 | Permian Deep Rock Oil Co., LLC | Midland, TX 79702 | Oil & Gas Operator | Jun 2026 |
| 21808 | Permian Development, Inc. | Midland, TX 79701 | Oil & Gas Operator | Mar 2008 |
| 21809 | Permian Legend LLC | San Marcos, TX 78666 | Oil Operator | Jun 2026 |
| 21810 | Permian Natural Resources | Tyler, TX 75701 | Oil & Gas Operator | Jun 2026 |
| 21811 | Permian Pacific Resources, Inc. | Dallas, TX 75230 | Oil & Gas Operator | Aug 2003 |
| 21812 | Permian Resources Operating, LLC | Midland, TX 79701 | Oil & Gas Operator | Jun 2026 |
| 21813 | Permian Resources, Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 21814 | Permian Resources, LLC | Houston, TX 77002 | Oil & Gas Operator | Mar 2018 |
| 21815 | Permian Roustabout & Oilfield Services LLC | Blanchard, OK 73010 | Oil & Gas Operator | Feb 2024 |
| 21816 | Permian Services Co., LLC | Midland, TX 79702 | Oil & Gas Operator | Sep 2013 |
| 21817 | Permian Solutions LLC | Midland, TX 79702 | Oil & Gas Operator | Jun 2026 |
| 21818 | Permian Surveys | Midland, TX 79707 | Oil & Gas Operator | Oct 1999 |
| 21819 | Permian West Corp. | Odessa, TX 79762 | Oil & Gas Operator | Jun 2026 |
| 21820 | Permok Oil Inc | Shawnee Mission, KS 662082110 | Oil & Gas Operator | Feb 2013 |
| 21821 | Perna Oil & Gas LLC | | Oil & Gas Operator | Nov 2024 |
| 21822 | Pero Farms Inc. | Brant, NY 14027 | Gas Operator | Dec 2024 |
| 21823 | Peroco Oil & Gas | Killbuck, OH 44637 | Oil & Gas Operator | Dec 1987 |
| 21824 | Perrin Oil Compa | | Oil & Gas Operator | Jun 1985 |
| 21825 | Perrin, Mary L | | Oil & Gas Operator | Oct 2005 |
| 21826 | Perry C A And Son Inc | | Oil & Gas Operator | Dec 1994 |
| 21827 | Perry L Larson Operating Co | Dallas, TX 75231-4712 | Oil & Gas Operator | Mar 2026 |
| 21828 | Perry Operating Inc. | Graham, TX 76450 | Oil & Gas Operator | Jun 2026 |
| 21829 | Perry Petroleum | | Oil Operator | Jun 1993 |
| 21830 | Perry Point, Inc. | | Oil Operator | Mar 2022 |
| 21831 | Perry Producing Company, Inc. | Ackerly, TX 79713 | Oil & Gas Operator | Jun 2026 |
| 21832 | Perry Production Company Inc | Perry, OK 73077-0412 | Oil & Gas Operator | May 2006 |
| 21833 | Perry, J. R. & Co. | Haskell, TX 79521 | Oil & Gas Operator | Jul 2015 |
| 21834 | Perry, James D | El Dorado, AR 71730 | Oil Operator | Jan 2025 |
| 21835 | Perry, Robert And Elizabeth | Dewittville, NY 14728 | Gas Operator | Dec 2024 |
| 21836 | Perryman Exp. And Prod., LLC | Athens, TX 75751 | Oil & Gas Operator | Jun 2026 |
| 21837 | Perryman Operating Company | Athens, TX 75751 | Oil & Gas Operator | Jun 2026 |
| 21838 | Perryton Operating Co., Inc. | Perryton, TX 79070 | Oil & Gas Operator | Jun 2026 |
| 21839 | Person Oil Co. | Bowie, TX 76230 | Oil & Gas Operator | Sep 2002 |
| 21840 | Person, Claude | Bowie, TX 76230 | Oil & Gas Operator | Apr 2007 |
| 21841 | Person, J.S., Inc. | Longview, TX 75606 | Oil & Gas Operator | Jun 2026 |
| 21842 | Pesco | | Oil & Gas Operator | Oct 1984 |
| 21843 | Pet Processors L.L.C | Painesville, OH 44077 | Oil & Gas Operator | Dec 2025 |
| 21844 | Pet-Ex Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Jan 2026 |
| 21845 | Petco Energy Corporation | Hinsdale, IL 60521 | Oil & Gas Operator | Jun 2026 |
| 21846 | Petco Energy Ser | | Oil Operator | Apr 1986 |
| 21847 | Petco Petroleum Corp | Hinsdale, IL 60521 | Oil & Gas Operator | Feb 2026 |
| 21848 | Petcon Associates LTD | Denver, CO 80202 | Oil & Gas Operator | Sep 2018 |
| 21849 | Pete Caldwell Drilling Co.,Inc | | Oil & Gas Operator | Aug 1991 |
| 21850 | Pete Mills | Midland, TX 79707 | Oil & Gas Operator | Oct 2012 |
| 21851 | Pete'S Pumping & Well Services, LLC | Butler, AL 36904 | Oil & Gas Operator | Mar 2026 |
| 21852 | Petech Enterprises, Inc. | Houston, TX 77066 | Oil & Gas Operator | Jan 2004 |
| 21853 | Peterland Oil Co | | Oil Operator | Sep 1990 |
| 21854 | Peterman-Sturlese Et Al | | Oil & Gas Operator | Sep 1987 |
| 21855 | Peters Petroleum Corporation | Dallas, TX 75243 | Oil & Gas Operator | Jan 2014 |
| 21856 | Peters Walter J | | Oil & Gas Operator | Jul 1991 |
| 21857 | Petersen Production Company LLC | | Oil & Gas Operator | Dec 2019 |
| 21858 | Peterson & Roberts | Loving, TX 76460 | Oil & Gas Operator | Mar 1998 |
| 21859 | Peterson Energy Management Inc | | Oil Operator | Aug 2010 |
| 21860 | Peterson Energy Operating | | Oil Operator | Dec 2025 |
| 21861 | Peterson Energy Operating Inc | Loveland, CO 80537 | Oil & Gas Operator | Mar 2026 |
| 21862 | Peterson Oil And Gas LLC | Wichita Falls, TX 76310 | Oil & Gas Operator | Jun 2026 |
| 21863 | Peterson Oil Co LLC | Centerville, KS 66014 | Oil Operator | Feb 2026 |
| 21864 | Peterson, Don Company | Loving, TX 76460 | Oil & Gas Operator | Jul 2017 |
| 21865 | Peterson, Thomas M. | Jamestown, NY 14701 | Oil & Gas Operator | Dec 2024 |
| 21866 | Petex | Breckenridge, TX 76424 | Oil & Gas Operator | Jun 2026 |
| 21867 | Petex Incorporat | | Oil Operator | Sep 1991 |
| 21868 | Petr Corporation | | Oil Operator | Apr 1988 |
| 21869 | Petr Exploration | | Oil Operator | Apr 1995 |
| 21870 | Petra Oleum Corp. | Midland, TX 79702 | Oil & Gas Operator | Jun 2026 |
| 21871 | Petra Petroleum Inc | Littleton, CO 80160-0319 | Oil & Gas Operator | Jun 2005 |
| 21872 | Petra Petroleum Management LLC | Hotchkiss, CO 81419-0369 | Gas Operator | Sep 2014 |
| 21873 | Petra, Inc. | | Oil & Gas Operator | Apr 1987 |
| 21874 | Petral Exploration Inc LLC | Denver, CO 80217 | Oil & Gas Operator | May 2007 |
| 21875 | Petral Exploration LLC | Denver, CO 80217-5083 | Oil & Gas Operator | Dec 2001 |
| 21876 | Petralis Energy Resources, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Jun 2026 |
| 21877 | Petram Oil And Gas, LLC | Richmond, TX 77407 | Oil Operator | Jun 2026 |
| 21878 | Petrie Enterpris | | Oil & Gas Operator | Sep 1986 |
| 21879 | Petrie, Stanley D. | Pratt, KS 67124 | Gas Operator | Aug 1995 |
| 21880 | Petrik Oil | Bartlesville, OK 74006 | Oil Operator | Nov 1996 |
| 21881 | Petrik Oil - Jim | | Oil Operator | Apr 1995 |
| 21882 | Petro "E", LLC | | Oil & Gas Operator | Feb 2010 |
| 21883 | Petro 2000 Exploration Co. | Katy, TX 77450 | Oil & Gas Operator | Nov 2011 |
| 21884 | Petro 85 Incorpo | | Oil Operator | Mar 1993 |
| 21885 | Petro Capital Resources LLC | | Oil & Gas Operator | Dec 2025 |
| 21886 | Petro Davis Inc | Oklahoma City, OK 73142-1807 | Oil & Gas Operator | Jan 2013 |
| 21887 | Petro Delta | Rockdale, TX 76567 | Oil Operator | Jun 2026 |
| 21888 | Petro Dev Corp | Bridgeport, WV 26330-0026 | Oil & Gas Operator | Dec 2013 |
| 21889 | Petro Drilling & Producing Co. | Archer City, TX 76351 | Oil & Gas Operator | Apr 1997 |
| 21890 | Petro Drilling Corp | Columbus, OH 43229 | Oil & Gas Operator | Dec 1993 |
| 21891 | Petro Dynamics C | | Oil & Gas Operator | Sep 1988 |
| 21892 | Petro Energies I | | Oil & Gas Operator | Apr 1991 |
| 21893 | Petro Energy Inc | Farmington, NM 87499 | Oil & Gas Operator | Sep 2025 |
| 21894 | Petro Evaluation Services Inc | Wooster, OH 44691 | Oil & Gas Operator | Dec 2023 |
| 21895 | Petro Harvester Operating Company, LLC | | Oil & Gas Operator | Nov 2022 |
| 21896 | Petro Hi-Tech, Inc. | Pasadena, TX 77505 | Oil & Gas Operator | Feb 2008 |
| 21897 | Petro Holdings, Inc. | Spencer, WV 25276-0000 | Oil & Gas Operator | Dec 2021 |
| 21898 | Petro Hunt Inc Of Kentucky | | Oil & Gas Operator | Dec 2006 |
| 21899 | Petro Lions, LLC | Somerset, TX 78069 | Oil Operator | Jun 2026 |
| 21900 | Petro Locators I | | Oil & Gas Operator | Dec 1995 |