| 21901 | P T C, Inc | Raccoon, KY 41557 | Gas Operator | Dec 2023 |
| 21902 | P T Oil Co Inc | Walters, OK 73572-9505 | Oil Operator | Nov 2014 |
| 21903 | P&B Petroleum LLC | Miami, FL 33166 | Oil & Gas Operator | Apr 2025 |
| 21904 | P&F Operations, LLC | Thrall, TX 76578 | Oil Operator | Apr 2025 |
| 21905 | P&H Gas, LLC | Fredonia, NY 14063 | Gas Operator | Dec 2023 |
| 21906 | P&P Industries, Inc. | Austin, TX 78737 | Oil & Gas Operator | Dec 2002 |
| 21907 | P,B&B Operating Inc. | Coleman, TX 76834 | Oil & Gas Operator | Apr 2025 |
| 21908 | P-2 Exploration Co. | Amarillo, TX 79124 | Oil & Gas Operator | Feb 2005 |
| 21909 | P-2 Exploraton Co Inc | Pampa, TX 79065-2920 | Oil & Gas Operator | Jun 1996 |
| 21910 | P-2 Oil | Vernal, UT 84078 | Oil & Gas Operator | Jul 2000 |
| 21911 | P-K Oil Co. | Olney, TX 76374 | Oil & Gas Operator | Aug 2003 |
| 21912 | P-R-O Management, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Apr 2025 |
| 21913 | P-Tex Petroleum, Inc. | Dallas, TX 75238 | Oil & Gas Operator | Nov 1999 |
| 21914 | P. B. Operating Company | | Oil & Gas Operator | Feb 1978 |
| 21915 | P. D. L. Services, Inc. | Minerva, OH 44657 | Oil & Gas Operator | Dec 2024 |
| 21916 | P. G. Oil & Gas, LLC | Clarksburg, WV 26302-2512 | Oil & Gas Operator | Dec 2021 |
| 21917 | P. K. Smith | | Oil Operator | Mar 1997 |
| 21918 | P. L. O. | Boerne, TX 78006 | Oil & Gas Operator | Jun 2016 |
| 21919 | P. R. L. Oil Company | Albany, TX 76430 | Oil & Gas Operator | Apr 2008 |
| 21920 | P. S. & G., Incorporated | | Gas Operator | Aug 1983 |
| 21921 | P.B. Blue Dot Properties | Wexford, PA 15090 | Oil & Gas Operator | Apr 2025 |
| 21922 | P.C.S.I. | | Oil & Gas Operator | Jun 1987 |
| 21923 | P.D.T. Drilling Limited Partnership | St. Albans, WV 25177 | Gas Operator | Dec 2021 |
| 21924 | P.I.D. Drilling Inc | Clyde, TX 79510 | Oil & Gas Operator | Apr 2025 |
| 21925 | P.M. Petroleum | | Oil Operator | Mar 1998 |
| 21926 | P.O.&G. Operating, LLC | Houston, TX 77057 | Oil & Gas Operator | Apr 2025 |
| 21927 | P.O.S. Energy, Inc. | Buna, TX 77612 | Oil & Gas Operator | Apr 2025 |
| 21928 | P.R.P., Inc. | | Oil & Gas Operator | Jan 2025 |
| 21929 | P.S.N. Petroleum, Inc. | San Antonio, TX 78233 | Oil & Gas Operator | Apr 2025 |
| 21930 | P.T.L. Operating Co. | | Oil Operator | Jun 2003 |
| 21931 | P1 Energy, LLC | Judson, TX 75660 | Oil & Gas Operator | Apr 2025 |
| 21932 | P3 Production | | Oil Operator | Dec 2024 |
| 21933 | P4 Operating, LLC | Midland, TX 79710 | Oil & Gas Operator | Apr 2025 |
| 21934 | Pa DCNR State Parks Bur | Harrisburg, PA 17105-8551 | Gas Operator | Dec 2024 |
| 21935 | Pa Dep Ofc Oil & Gas MGMT | Harrisburg, PA 17105-8765 | Gas Operator | Dec 1990 |
| 21936 | Pa Gen Energy Co LLC | Warren, PA 16365-2510 | Oil & Gas Operator | Feb 2025 |
| 21937 | Pa Gen Energy Corp | Warren, PA 16365-2510 | Oil & Gas Operator | Dec 2002 |
| 21938 | Pa Land Holdings Corp | Waynesburg, PA 15370-3020 | Oil & Gas Operator | Dec 2011 |
| 21939 | Pa Land Holdings LLC | Waynesburg, PA 15370-3020 | Gas Operator | Dec 2017 |
| 21940 | Pa Mineral SVCS LLC | Indiana, PA 15701 | Oil & Gas Operator | Dec 2024 |
| 21941 | Pa Prod SVC Inc | Indiana, PA 15701-0421 | Oil & Gas Operator | Dec 2024 |
| 21942 | Pa Prospect LLC | Columbus, MT 59019 | Oil & Gas Operator | Jul 2020 |
| 21943 | Pa State Sys Of Higher Ed Indiana Univ | Indiana, PA 15705-0001 | Gas Operator | Dec 2012 |
| 21944 | Pablo Energy II, LLC | Amarillo, TX 79105 | Oil & Gas Operator | Jan 2025 |
| 21945 | Pablo Energy, Inc. | Pampa, TX 79065 | Oil & Gas Operator | Dec 2005 |
| 21946 | Pac Drilling LLC | Bolivar, OH 44612 | Oil & Gas Operator | Dec 2024 |
| 21947 | Pace And Ray Oil Co. | Electra, TX 76360 | Oil & Gas Operator | Apr 2025 |
| 21948 | Pace Co/Chas E Hall | Marietta, OH 45750 | Oil & Gas Operator | Dec 1990 |
| 21949 | Pace Diversified Corporation | | Oil & Gas Operator | Dec 2024 |
| 21950 | Pace Exploration LLC | Tulsa, OK 74133 | Oil & Gas Operator | Jan 2025 |
| 21951 | Pace Oil And Gas Company | Austin, TX 78715 | Oil & Gas Operator | Apr 2025 |
| 21952 | Pace Operating | Abilene, TX 79608 | Oil & Gas Operator | Apr 2025 |
| 21953 | Pace Petroleum Company | Dallas, TX 75206 | Oil & Gas Operator | Apr 2025 |
| 21954 | Pace Production Co. | San Angelo, TX 76902 | Oil & Gas Operator | Apr 2025 |
| 21955 | Pace Royalty Trust Fund, Inc. | Shreveport, LA 71135 | Oil & Gas Operator | Nov 2001 |
| 21956 | Pace West Production LC | San Angelo, TX 76904 | Oil & Gas Operator | Sep 1995 |
| 21957 | Pacer Resources, Inc. | Calgary, AB T3H 3J9 | Gas Operator | Dec 2001 |
| 21958 | Pacesetter Energy, Inc. | Flower Mound, TX 75028 | Oil & Gas Operator | May 2008 |
| 21959 | Pacesetter Energy, LLC | Flower Mound, TX 75028 | Oil & Gas Operator | Jul 2020 |
| 21960 | Pacific Alliance Medical Center | | Oil Operator | Dec 2007 |
| 21961 | Pacific Atlantic Oil Co. | | Oil & Gas Operator | Dec 2003 |
| 21962 | Pacific Atlantic Resources, Inc. | | Oil & Gas Operator | Dec 2021 |
| 21963 | Pacific Coast Energy Company LP | | Oil & Gas Operator | Dec 2024 |
| 21964 | Pacific Energy & Mining Company | Reno, NV 89511 | Oil & Gas Operator | Aug 2020 |
| 21965 | Pacific Energy Resources Inc. | | Oil Operator | Dec 2024 |
| 21966 | Pacific Energy Resources LTD | | Oil & Gas Operator | Sep 2009 |
| 21967 | Pacific Enterprise Oil Co USA | Los Angeles, CA 90071-2005 | Oil & Gas Operator | Aug 2012 |
| 21968 | Pacific Enterprises Oil Co USA | Dallas, TX 75201 | Oil & Gas Operator | Feb 2001 |
| 21969 | Pacific Enterprises Royalty Co | Oklahoma City, OK 73101 | Oil & Gas Operator | Feb 2002 |
| 21970 | Pacific Exploration Oper Co, LLC | Houston, TX 77057 | Oil Operator | Apr 2025 |
| 21971 | Pacific Gas And Electric Company | | Gas Operator | Dec 2024 |
| 21972 | Pacific Inland Operating Corporation | | Gas Operator | Dec 1993 |
| 21973 | Pacific Natural Gas Explor | | Oil & Gas Operator | Dec 1974 |
| 21974 | Pacific Operators, Inc. | San Antonio, TX 78205 | Oil & Gas Operator | Mar 1999 |
| 21975 | Pacific Palms Petroleum LLC | | Oil & Gas Operator | Dec 2024 |
| 21976 | Pacific Petroleum Technology LLC | | Oil & Gas Operator | Dec 2018 |
| 21977 | Pacific Phoenix Inc | Bartlesville, OK 74005 | Oil & Gas Operator | Jun 1998 |
| 21978 | Pacific Trans Supply | Vernal, UT 84078 | Oil & Gas Operator | Jul 1987 |
| 21979 | Pacific Transmission Supply | | Oil & Gas Operator | Dec 1987 |
| 21980 | Pack-Man Energy Company | Ranger, TX 76470 | Oil & Gas Operator | Nov 2005 |
| 21981 | Packard Energy LLC | Medicine Lodge, KS 67104 | Oil & Gas Operator | Dec 2024 |
| 21982 | Packard Gas Company | Irving, TX 75063 | Oil & Gas Operator | Nov 2006 |
| 21983 | Packard, Lynn | Medicine Lodge, KS | Oil & Gas Operator | Dec 2024 |
| 21984 | Pactola Development Co | Tulsa, OK 74159 | Oil & Gas Operator | Sep 2004 |
| 21985 | Pada Petroleum, Inc. | Maple City, KS 67102 | Oil & Gas Operator | Dec 2024 |
| 21986 | Padco LLC | | Oil & Gas Operator | Feb 2025 |
| 21987 | Padgett Oil Inc. | Sedan, KS 67361 | Oil Operator | May 2006 |
| 21988 | Padon, Frank B. Oil Oper., Inc. | Houston, TX 77227 | Oil & Gas Operator | Nov 1998 |
| 21989 | Padre Oil Co. | | Oil & Gas Operator | Dec 2024 |
| 21990 | Page Development, L.L.C. | | Oil Operator | Dec 2024 |
| 21991 | Page Energy | Eldorado, TX 76936 | Oil & Gas Operator | Mar 1997 |
| 21992 | Page Exploration | Midland, TX 79701 | Oil & Gas Operator | Apr 2007 |
| 21993 | Page Lew Barron | | Oil Operator | Dec 2024 |
| 21994 | Page Oil & Gas, LLC | Midland, TX 79701 | Oil & Gas Operator | Apr 2025 |
| 21995 | Page Operating, LLC | Midland, TX 79701 | Oil & Gas Operator | Aug 2010 |
| 21996 | Page Petroleum Inc | Calgary, AB T2P3M-3000 | Oil & Gas Operator | Nov 1998 |
| 21997 | Page, Allen | | Oil & Gas Operator | Dec 2014 |
| 21998 | Paine Petroleum Company LLC | | Oil Operator | Dec 2013 |
| 21999 | Paint Rock Operating, LLC | San Angelo, TX 76904 | Oil & Gas Operator | Apr 2025 |
| 22000 | Painted Pegasus Petroleum LLC | | Oil & Gas Operator | Jul 2024 |