| 21601 | P.I.D. Drilling Inc | Clyde, TX 79510 | Oil & Gas Operator | Jun 2025 |
| 21602 | P.M. Petroleum | | Oil Operator | Mar 1998 |
| 21603 | P.O.&G. Operating, LLC | Houston, TX 77057 | Oil & Gas Operator | Jun 2025 |
| 21604 | P.O.S. Energy, Inc. | Buna, TX 77612 | Oil & Gas Operator | Jun 2025 |
| 21605 | P.R.P., Inc. | | Oil & Gas Operator | Apr 2025 |
| 21606 | P.S.N. Petroleum, Inc. | San Antonio, TX 78233 | Oil & Gas Operator | Jun 2025 |
| 21607 | P.T.L. Operating Co. | | Oil Operator | Jun 2003 |
| 21608 | P1 Energy, LLC | Judson, TX 75660 | Oil & Gas Operator | Jun 2025 |
| 21609 | P3 Production | | Oil Operator | Feb 2025 |
| 21610 | P4 Operating, LLC | Midland, TX 79710 | Oil & Gas Operator | Jun 2025 |
| 21611 | Pa DCNR State Parks Bur | Harrisburg, PA 17105-8551 | Gas Operator | Dec 2024 |
| 21612 | Pa Dep Ofc Oil & Gas MGMT | Harrisburg, PA 17105-8765 | Gas Operator | Dec 1990 |
| 21613 | Pa Gen Energy Co LLC | Warren, PA 16365-2510 | Oil & Gas Operator | Apr 2025 |
| 21614 | Pa Gen Energy Corp | Warren, PA 16365-2510 | Oil & Gas Operator | Dec 2002 |
| 21615 | Pa Land Holdings Corp | Waynesburg, PA 15370-3020 | Oil & Gas Operator | Dec 2011 |
| 21616 | Pa Land Holdings LLC | Waynesburg, PA 15370-3020 | Gas Operator | Dec 2017 |
| 21617 | Pa Mineral SVCS LLC | Indiana, PA 15701 | Oil & Gas Operator | Dec 2024 |
| 21618 | Pa Prod SVC Inc | Indiana, PA 15701-0421 | Oil & Gas Operator | Dec 2024 |
| 21619 | Pa Prospect LLC | Columbus, MT 59019 | Oil & Gas Operator | Jul 2020 |
| 21620 | Pa State Sys Of Higher Ed Indiana Univ | Indiana, PA 15705-0001 | Gas Operator | Dec 2012 |
| 21621 | Pablo Energy II, LLC | Amarillo, TX 79105 | Oil & Gas Operator | Mar 2025 |
| 21622 | Pablo Energy, Inc. | Pampa, TX 79065 | Oil & Gas Operator | Dec 2005 |
| 21623 | Pac Drilling LLC | Bolivar, OH 44612 | Oil & Gas Operator | Dec 2024 |
| 21624 | Pace And Ray Oil Co. | Electra, TX 76360 | Oil & Gas Operator | Jun 2025 |
| 21625 | Pace Co/Chas E Hall | Marietta, OH 45750 | Oil & Gas Operator | Dec 1990 |
| 21626 | Pace Diversified Corporation | | Oil & Gas Operator | Mar 2025 |
| 21627 | Pace Exploration LLC | Tulsa, OK 74133 | Oil & Gas Operator | Feb 2025 |
| 21628 | Pace Oil And Gas Company | Austin, TX 78715 | Oil & Gas Operator | Jun 2025 |
| 21629 | Pace Operating | Abilene, TX 79608 | Oil & Gas Operator | Jun 2025 |
| 21630 | Pace Petroleum Company | Dallas, TX 75206 | Oil & Gas Operator | Jun 2025 |
| 21631 | Pace Production Co. | San Angelo, TX 76902 | Oil & Gas Operator | Jun 2025 |
| 21632 | Pace Royalty Trust Fund, Inc. | Shreveport, LA 71135 | Oil & Gas Operator | Nov 2001 |
| 21633 | Pace West Production LC | San Angelo, TX 76904 | Oil & Gas Operator | Sep 1995 |
| 21634 | Pacer Resources, Inc. | Calgary, AB T3H 3J9 | Gas Operator | Dec 2001 |
| 21635 | Pacesetter Energy, Inc. | Flower Mound, TX 75028 | Oil & Gas Operator | May 2008 |
| 21636 | Pacesetter Energy, LLC | Flower Mound, TX 75028 | Oil & Gas Operator | Jul 2020 |
| 21637 | Pacific Alliance Medical Center | | Oil Operator | Dec 2007 |
| 21638 | Pacific Atlantic Oil Co. | | Oil & Gas Operator | Dec 2003 |
| 21639 | Pacific Atlantic Resources, Inc. | | Oil & Gas Operator | Dec 2021 |
| 21640 | Pacific Coast Energy Company LP | | Oil & Gas Operator | Apr 2025 |
| 21641 | Pacific Energy & Mining Company | Reno, NV 89511 | Oil & Gas Operator | Aug 2020 |
| 21642 | Pacific Energy Resources Inc. | | Oil Operator | Mar 2025 |
| 21643 | Pacific Energy Resources LTD | | Oil & Gas Operator | Sep 2009 |
| 21644 | Pacific Enterprise Oil Co USA | Los Angeles, CA 90071-2005 | Oil & Gas Operator | Aug 2012 |
| 21645 | Pacific Enterprises Oil Co USA | Dallas, TX 75201 | Oil & Gas Operator | Feb 2001 |
| 21646 | Pacific Enterprises Royalty Co | Oklahoma City, OK 73101 | Oil & Gas Operator | Feb 2002 |
| 21647 | Pacific Exploration Oper Co, LLC | Houston, TX 77057 | Oil Operator | Jun 2025 |
| 21648 | Pacific Gas And Electric Company | | Gas Operator | Mar 2025 |
| 21649 | Pacific Inland Operating Corporation | | Gas Operator | Dec 1993 |
| 21650 | Pacific Natural Gas Explor | | Oil & Gas Operator | Dec 1974 |
| 21651 | Pacific Operators, Inc. | San Antonio, TX 78205 | Oil & Gas Operator | Mar 1999 |
| 21652 | Pacific Palms Petroleum LLC | | Oil & Gas Operator | Mar 2025 |
| 21653 | Pacific Petroleum Technology LLC | | Oil & Gas Operator | Dec 2018 |
| 21654 | Pacific Trans Supply | Vernal, UT 84078 | Oil & Gas Operator | Jul 1987 |
| 21655 | Pacific Transmission Supply | | Oil & Gas Operator | Dec 1987 |
| 21656 | Pack-Man Energy Company | Ranger, TX 76470 | Oil & Gas Operator | Nov 2005 |
| 21657 | Packard Energy LLC | Medicine Lodge, KS 67104 | Oil & Gas Operator | Feb 2025 |
| 21658 | Packard Gas Company | Irving, TX 75063 | Oil & Gas Operator | Nov 2006 |
| 21659 | Packard, Lynn | Medicine Lodge, KS | Oil & Gas Operator | Feb 2025 |
| 21660 | Pactola Development Co | Tulsa, OK 74159 | Oil & Gas Operator | Sep 2004 |
| 21661 | Pada Petroleum, Inc. | Maple City, KS 67102 | Oil & Gas Operator | Feb 2025 |
| 21662 | Padco LLC | | Oil & Gas Operator | Mar 2025 |
| 21663 | Padgett Oil Inc. | Sedan, KS 67361 | Oil Operator | May 2006 |
| 21664 | Padon, Frank B. Oil Oper., Inc. | Houston, TX 77227 | Oil & Gas Operator | Nov 1998 |
| 21665 | Padre Oil Co. | | Oil & Gas Operator | Apr 2025 |
| 21666 | Page Development, L.L.C. | | Oil Operator | Dec 2024 |
| 21667 | Page Energy | Eldorado, TX 76936 | Oil & Gas Operator | Mar 1997 |
| 21668 | Page Exploration | Midland, TX 79701 | Oil & Gas Operator | Apr 2007 |
| 21669 | Page Lew Barron | | Oil Operator | Dec 2024 |
| 21670 | Page Oil & Gas, LLC | Midland, TX 79701 | Oil & Gas Operator | Jun 2025 |
| 21671 | Page Operating, LLC | Midland, TX 79701 | Oil & Gas Operator | Aug 2010 |
| 21672 | Page Petroleum Inc | Calgary, AB T2P3M-3000 | Oil & Gas Operator | Nov 1998 |
| 21673 | Page, Allen | | Oil & Gas Operator | Dec 2014 |
| 21674 | Paine Petroleum Company LLC | | Oil Operator | Dec 2013 |
| 21675 | Paint Rock Operating, LLC | San Angelo, TX 76904 | Oil & Gas Operator | Jun 2025 |
| 21676 | Painted Pegasus Petroleum LLC | | Oil & Gas Operator | Jul 2024 |
| 21677 | Painter & McPhail | Bartlesville, OK 74006 | Oil Operator | Sep 1996 |
| 21678 | Painter Oil And Gas LTD. | | Oil & Gas Operator | Jun 1986 |
| 21679 | Painter Oil Comp | | Oil & Gas Operator | Jul 1993 |
| 21680 | Paisano Minerals Company | Corpus Chrsti, TX 78477 | Oil & Gas Operator | Aug 2003 |
| 21681 | Paisano Petroleum, Inc. | San Antonio, TX 78246 | Oil & Gas Operator | Dec 2016 |
| 21682 | Paisano Production, Inc. | Somerset, TX 78069 | Oil Operator | Jun 2025 |
| 21683 | Paiute Oil & Mining Corp | Salt Lake City, UT 84117 | Oil & Gas Operator | Jun 1989 |
| 21684 | Pajaro Energy LLC | Santa Fe, NM 87501 | Oil & Gas Operator | Dec 2023 |
| 21685 | Pak Energy LLC | Calgary, AB T3A-5E8 | Oil Operator | Sep 2022 |
| 21686 | Pal Energy LLC | Guymon, OK 73942-1950 | Gas Operator | Aug 2009 |
| 21687 | Pal Kids Inc | Coronado, CA 92118 | Oil & Gas Operator | Nov 2000 |
| 21688 | Pal LLC | Gillette, WY 82718 | Oil Operator | Dec 2019 |
| 21689 | Palace Exploration Company | Houston, TX 77002 | Oil & Gas Operator | Mar 2007 |
| 21690 | Palace Operating Company | Tulsa, OK 74136 | Oil & Gas Operator | Aug 2009 |
| 21691 | Paladar Investments I, L.L.C. | Houston, TX 77090 | Oil & Gas Operator | Feb 2013 |
| 21692 | Paladin Drilling Company | McLeod, TX 75565 | Gas Operator | Sep 2011 |
| 21693 | Paladin Energy Corp. | Dallas, TX 75229 | Oil & Gas Operator | Jul 2017 |
| 21694 | Paladin Energy Partner LLC | Denver, CO 80201 | Oil & Gas Operator | Aug 2006 |
| 21695 | Paladin Energy Partners LLC | | Oil & Gas Operator | Dec 2006 |
| 21696 | Paladin Exploration Co., Inc. | Plano, TX 75093 | Oil & Gas Operator | Feb 1995 |
| 21697 | Paladin Petroleum III, L.L.C. | Austin, TX 78746 | Oil & Gas Operator | Jun 2025 |
| 21698 | Paladin-Hayes, L.L.C. | Austin, TX 78746 | Oil & Gas Operator | Dec 1999 |
| 21699 | Paleo Oil & Gas, Inc. | Graham, TX 76450 | Oil & Gas Operator | Jun 2025 |
| 21700 | Paleo Oil Company LLC | Corpus Chrsti, TX 78411 | Oil & Gas Operator | Jun 2025 |