| 801 | Perfection Oil & Gas Co | | Gas Operator | Sep 1937 |
| 802 | Performance Energy Partners LLC | Barnsdall, OK 74002-0628 | Oil & Gas Operator | Sep 2025 |
| 803 | Performance Operating Company LLC | Barnsdall, OK 74002 | Oil & Gas Operator | Oct 2025 |
| 804 | Performance Operating Partners, LLC | Shreveport, LA 71164 | Oil & Gas Operator | Dec 2025 |
| 805 | Performance Petroleum Company LLC | Barnsdall, OK 74002 | Oil & Gas Operator | Oct 2025 |
| 806 | Pergerson Energy, L.L.C. | Richmond, VA 23225 | Oil Operator | Dec 2025 |
| 807 | Perimeter Resource Company | Midland, TX 79702 | Oil & Gas Operator | Dec 2025 |
| 808 | Periscope Operating LLC | McKinney, TX 75069 | Oil & Gas Operator | Jun 2020 |
| 809 | Perkins & Perkins Oil Co. Inc. | Allegany, NY 14706 | Oil & Gas Operator | Dec 2024 |
| 810 | Perkins Energy Company | Duncan, OK 73533-3853 | Oil & Gas Operator | Nov 2025 |
| 811 | Perkins Mike | Velma, OK 73091 | Oil & Gas Operator | Jan 2006 |
| 812 | Perkins Nova | Atwood, OK 74827-9738 | Oil Operator | Feb 2014 |
| 813 | Perkins Oil & Gas Inc | Pennsboro, WV 26415-0547 | Oil & Gas Operator | Dec 2021 |
| 814 | Perkins Oil Comp | | Oil Operator | Nov 1988 |
| 815 | Perkins Oil Ente | | Oil & Gas Operator | Dec 1995 |
| 816 | Perkins Oil Enterprises, Inc. | Howard, KS 67349 | Oil & Gas Operator | Sep 2025 |
| 817 | Perkins Oil Properties | | Oil & Gas Operator | Nov 2024 |
| 818 | Perkins Production Company Inc | Seminole, OK 74868 | Oil & Gas Operator | May 2006 |
| 819 | Perkins Production Company LLC | Pennsboro, WV 26415 | Oil & Gas Operator | Dec 2021 |
| 820 | Perkins, A. E. | Augusta, KS 67010 | Gas Operator | Aug 1989 |
| 821 | Perkins, Bobby R | | Oil Operator | Mar 2017 |
| 822 | Perkins, Don & Assoc, Inc | | Oil Operator | Dec 2011 |
| 823 | Perkins, Earl | | Oil & Gas Operator | Aug 2013 |
| 824 | Perkins, Eugene O. | Boerne, TX 78015 | Oil & Gas Operator | Dec 2025 |
| 825 | Perkins-Prothro Company | Wichita Falls, TX 76308 | Oil & Gas Operator | May 2002 |
| 826 | Perlman,I.H.Oil & Gas Properties | Houston, TX 77056 | Oil & Gas Operator | Mar 2008 |
| 827 | Permeator Corp. | | Oil Operator | Sep 1990 |
| 828 | Permex Petroleum Company, LLC | Dallas, TX 75201 | Oil & Gas Operator | Mar 2024 |
| 829 | Permex Petroleum Corporation | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 830 | Permian Basin Oil Corporation | Odessa, TX 79762 | Oil & Gas Operator | Dec 2025 |
| 831 | Permian Deep Rock Oil Co., LLC | Midland, TX 79702 | Oil & Gas Operator | Dec 2025 |
| 832 | Permian Development, Inc. | Midland, TX 79701 | Oil & Gas Operator | Mar 2008 |
| 833 | Permian Legend LLC | San Marcos, TX 78666 | Oil Operator | Dec 2025 |
| 834 | Permian Natural Resources | Pflugerville, TX 78660 | Oil & Gas Operator | Dec 2025 |
| 835 | Permian Pacific Resources, Inc. | Dallas, TX 75230 | Oil & Gas Operator | Aug 2003 |
| 836 | Permian Reef, LLC | Greenwood, IN 46143 | Gas Operator | Mar 2011 |
| 837 | Permian Resources Operating, LLC | Midland, TX 79701 | Oil & Gas Operator | Dec 2025 |
| 838 | Permian Resources, Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 839 | Permian Resources, LLC | Houston, TX 77002 | Oil & Gas Operator | Mar 2018 |
| 840 | Permian Roustabout & Oilfield Services LLC | Blanchard, OK 73010 | Oil & Gas Operator | Feb 2024 |
| 841 | Permian Services Co., LLC | Midland, TX 79702 | Oil & Gas Operator | Sep 2013 |
| 842 | Permian Solutions LLC | Midland, TX 79702 | Oil & Gas Operator | Dec 2025 |
| 843 | Permian Surveys | Midland, TX 79707 | Oil & Gas Operator | Oct 1999 |
| 844 | Permian West Corp. | Odessa, TX 79762 | Oil & Gas Operator | Dec 2025 |
| 845 | Permico Corporation | Stafford, TX 77477 | Oil & Gas Operator | Nov 2003 |
| 846 | Permok Oil Inc | Shawnee Mission, KS 662082110 | Oil & Gas Operator | Feb 2013 |
| 847 | Perna Oil & Gas LLC | | Oil & Gas Operator | Nov 2024 |
| 848 | Pero Farms Inc. | Brant, NY 14027 | Gas Operator | Dec 2024 |
| 849 | Peroco Oil & Gas | Killbuck, OH 44637 | Oil & Gas Operator | Dec 1987 |
| 850 | Perrin Oil Compa | | Oil & Gas Operator | Jun 1985 |
| 851 | Perrin, Mary L | | Oil & Gas Operator | Oct 2005 |
| 852 | Perry C A And Son Inc | | Oil & Gas Operator | Dec 1994 |
| 853 | Perry L Larson Operating Co | Dallas, TX 75231-4712 | Oil & Gas Operator | Oct 2025 |
| 854 | Perry Operating Inc. | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 855 | Perry Petroleum | | Oil Operator | Jun 1993 |
| 856 | Perry Point, Inc. | | Oil Operator | Mar 2022 |
| 857 | Perry Producing Company, Inc. | Ackerly, TX 79713 | Oil & Gas Operator | Dec 2025 |
| 858 | Perry Production Company Inc | Perry, OK 73077-0412 | Oil & Gas Operator | May 2006 |
| 859 | Perry, J. R. & Co. | Haskell, TX 79521 | Oil & Gas Operator | Jul 2015 |
| 860 | Perry, James D | El Dorado, AR 71730 | Oil Operator | Jan 2025 |
| 861 | Perry, Robert And Elizabeth | Dewittville, NY 14728 | Gas Operator | Dec 2024 |
| 862 | Perryman Exp. And Prod., LLC | Athens, TX 75751 | Oil & Gas Operator | Dec 2025 |
| 863 | Perryman Operating Company | Athens, TX 75751 | Oil & Gas Operator | Dec 2025 |
| 864 | Perryton Operating Co., Inc. | Perryton, TX 79070 | Oil & Gas Operator | Dec 2025 |
| 865 | Person Oil Co. | Bowie, TX 76230 | Oil & Gas Operator | Sep 2002 |
| 866 | Person, Claude | Bowie, TX 76230 | Oil & Gas Operator | Apr 2007 |
| 867 | Person, J.S., Inc. | Longview, TX 75606 | Oil & Gas Operator | Dec 2025 |
| 868 | Pertex Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Jul 1996 |
| 869 | Pesco | | Oil & Gas Operator | Oct 1984 |
| 870 | Pet Processors L.L.C | Painesville, OH 44077 | Oil & Gas Operator | Dec 2024 |
| 871 | Pet-Ex Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Sep 2025 |
| 872 | Petaluma Oil & Gas | | Oil & Gas Operator | Dec 1999 |
| 873 | Petco Energy Corporation | Hinsdale, IL 60521 | Oil & Gas Operator | Dec 2025 |
| 874 | Petco Energy Ser | | Oil Operator | Apr 1986 |
| 875 | Petco Petroleum Corp | Hinsdale, IL 60521 | Oil & Gas Operator | Oct 2025 |
| 876 | Petcon Associates LTD | Denver, CO 80202 | Oil & Gas Operator | Sep 2018 |
| 877 | Pete Caldwell Drilling Co.,Inc | | Oil & Gas Operator | Aug 1991 |
| 878 | Pete Mills | Midland, TX 79707 | Oil & Gas Operator | Oct 2012 |
| 879 | Pete'S Pumping & Well Services, LLC | Butler, AL 36904 | Oil & Gas Operator | Oct 2025 |
| 880 | Petech Enterprises, Inc. | Houston, TX 77066 | Oil & Gas Operator | Jan 2004 |
| 881 | Peter W. Herbst | | Gas Operator | Mar 1998 |
| 882 | Peterland Oil Co | | Oil Operator | Sep 1990 |
| 883 | Peterman-Sturlese Et Al | | Oil & Gas Operator | Sep 1987 |
| 884 | Peters Petroleum Corporation | Dallas, TX 75243 | Oil & Gas Operator | Jan 2014 |
| 885 | Peters Walter J | | Oil & Gas Operator | Jul 1991 |
| 886 | Petersen Production Company LLC | | Oil & Gas Operator | Dec 2019 |
| 887 | Peterson & Roberts | Loving, TX 76460 | Oil & Gas Operator | Mar 1998 |
| 888 | Peterson Energy Management Inc | | Oil Operator | Aug 2010 |
| 889 | Peterson Energy Operating Inc | Loveland, CO 80537 | Oil & Gas Operator | Nov 2025 |
| 890 | Peterson Oil And Gas LLC | Wichita Falls, TX 76310 | Oil & Gas Operator | Dec 2025 |
| 891 | Peterson Oil Co LLC | Centerville, KS 66014 | Oil Operator | Sep 2025 |
| 892 | Peterson, Don Company | Loving, TX 76460 | Oil & Gas Operator | Jul 2017 |
| 893 | Peterson, Thomas M. | Jamestown, NY 14701 | Oil & Gas Operator | Dec 2024 |
| 894 | Petex | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 2025 |
| 895 | Petex Incorporat | | Oil Operator | Sep 1991 |
| 896 | Pethtel Oil & Gas | | Oil & Gas Operator | Dec 2005 |
| 897 | Petr Corporation | | Oil Operator | Apr 1988 |
| 898 | Petr Exploration | | Oil Operator | Apr 1995 |
| 899 | Petra Oleum Corp. | Midland, TX 79702 | Oil & Gas Operator | Dec 2025 |
| 900 | Petra Petroleum Inc | Littleton, CO 80160-0319 | Oil & Gas Operator | Jun 2005 |