| 3501 | Page Development, L.L.C. | | Oil Operator | Dec 2024 |
| 3502 | Painter Oil And Gas LTD. | | Oil & Gas Operator | Jun 1986 |
| 3503 | Palace Exploration Company | Houston, TX 77002 | Oil & Gas Operator | Mar 2007 |
| 3504 | Palace Operating Company | Tulsa, OK 74136 | Oil & Gas Operator | Aug 2009 |
| 3505 | Paladin Petroleum III, L.L.C. | Austin, TX 78746 | Oil & Gas Operator | Feb 2026 |
| 3506 | Palm Energy Offshore, L.L.C. | | Oil & Gas Operator | Apr 2019 |
| 3507 | Palmer Petroleum, Inc. | Shreveport, LA 71105 | Oil & Gas Operator | Jun 2025 |
| 3508 | Palmetto Oil Co., Inc. | | Oil & Gas Operator | Jan 2025 |
| 3509 | Paloma Natural Gas, LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2024 |
| 3510 | Pan Petroleum MLP | Kansas City, MO 64114 | Oil & Gas Operator | Aug 1997 |
| 3511 | Pan-Ok Production Company | | Oil & Gas Operator | Nov 2024 |
| 3512 | Panaco Production Co | Houston, TX 77002 | Oil & Gas Operator | Dec 1999 |
| 3513 | Panaco, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Aug 2025 |
| 3514 | Panenergy La Intrastate Co | | Oil Operator | Mar 2000 |
| 3515 | Panola Energy Corporation | | Gas Operator | Mar 1980 |
| 3516 | Panotech Exploration Corp. | | Oil & Gas Operator | Jan 1983 |
| 3517 | Panther Bayou Energy, LLC | Houston, TX 77070 | Oil & Gas Operator | Apr 2021 |
| 3518 | Paoco-Walker | | Gas Operator | Sep 2011 |
| 3519 | Par Expl Co & Taurus Petroleum | | Gas Operator | Mar 1984 |
| 3520 | Par Exploration Co | | Oil & Gas Operator | Oct 1986 |
| 3521 | Par Minerals Corporation | Shreveport, LA 71101 | Oil & Gas Operator | Feb 2026 |
| 3522 | Par Oil Corporation | | Oil & Gas Operator | Sep 1990 |
| 3523 | Par Oil Corporation, Et Al | | Oil & Gas Operator | Dec 1984 |
| 3524 | Par-Naylor | | Oil Operator | Mar 1985 |
| 3525 | Paradigm Energy LLC | Lenexa, KS 66227 | Oil & Gas Operator | Dec 2024 |
| 3526 | Paragon Resources, Inc | | Oil & Gas Operator | Nov 1991 |
| 3527 | Park Exploration Inc | | Oil & Gas Operator | Nov 2012 |
| 3528 | Parker & Parsley Development Co. | Midland, TX 79702 | Oil & Gas Operator | May 1995 |
| 3529 | Parker & Parsley Devpt L P | | Oil & Gas Operator | Oct 1997 |
| 3530 | Parker & Parsley Petroleum Co. | | Oil & Gas Operator | Dec 1990 |
| 3531 | Parker & Parsley Producing LP | Midland, TX 79702 | Oil & Gas Operator | Oct 1997 |
| 3532 | Parker Enterprises, Inc. | | Oil & Gas Operator | Jun 1999 |
| 3533 | Parker Oil Company | Abilene, TX 79601 | Oil & Gas Operator | Feb 2024 |
| 3534 | Parnes Oil Company | | Oil Operator | Jul 1994 |
| 3535 | Partners Oil Company | Tulsa, OK 74135 | Oil & Gas Operator | Aug 1995 |
| 3536 | Patkim Production Inc. | | Oil Operator | Jan 2025 |
| 3537 | Patrick Petroleum Corporation | | Oil & Gas Operator | Oct 1984 |
| 3538 | Patterson Resources, Inc. | | Oil & Gas Operator | Apr 1984 |
| 3539 | Patton Operating Co. | Kilgore, TX 75663 | Oil & Gas Operator | Nov 1997 |
| 3540 | Paul E. Cameron, Jr., Inc. | | Oil & Gas Operator | May 2003 |
| 3541 | Paul Gowan-Miss. Ventures | | Gas Operator | Jan 1990 |
| 3542 | Paul Guido | | Oil Operator | Oct 1998 |
| 3543 | Paul J. Ross | | Oil Operator | Dec 1986 |
| 3544 | Paul M. Toce | | Oil & Gas Operator | Jul 1984 |
| 3545 | Pawnee Oil And Gas, Inc. | Richardson, TX 75083 | Oil & Gas Operator | May 2023 |
| 3546 | Paxton Oil Company | | Oil & Gas Operator | Dec 2024 |
| 3547 | Paxton Petroleum, LTD. | | Oil & Gas Operator | May 1989 |
| 3548 | Pay Oil, L. L. C. | | Oil & Gas Operator | Jan 2025 |
| 3549 | Pay Operating, LLC | | Oil & Gas Operator | Dec 2024 |
| 3550 | Pay Ventures, L.L.C. | | Oil Operator | Dec 2024 |
| 3551 | Peachtree Production Co. | | Oil & Gas Operator | Mar 1981 |
| 3552 | Peak Operating Co. | | Oil & Gas Operator | Jul 2024 |
| 3553 | Pearl Resources Inc. | | Oil & Gas Operator | Jul 1990 |
| 3554 | Pecos Exploration Inc. | | Oil & Gas Operator | Jun 1988 |
| 3555 | Pecos Petroleum Company | Houston, TX 77057 | Oil & Gas Operator | Oct 1999 |
| 3556 | Pecos Western Corporation | | Gas Operator | Feb 1992 |
| 3557 | Pedernales Petroleum Operating, LLC | | Oil & Gas Operator | Dec 2024 |
| 3558 | Pedernales Production, LP | Houston, TX 77057 | Oil & Gas Operator | Mar 2022 |
| 3559 | Pel-Tex - McMoran | | Oil & Gas Operator | Dec 1985 |
| 3560 | Pel-Tex Oil Company, Inc. | | Oil & Gas Operator | Jul 1995 |
| 3561 | Pel-Tex Oil Company, LLC | | Oil & Gas Operator | Nov 2010 |
| 3562 | Pel-Tex, Inc. | | Oil & Gas Operator | Jul 1985 |
| 3563 | Pelican Dome Exploration Inc. | Harahan, LA 70123 | Oil & Gas Operator | Aug 2000 |
| 3564 | Pelican Gas Prod. Assoc. | | Oil & Gas Operator | Oct 1987 |
| 3565 | Pelican Producing Co. | | Gas Operator | Nov 1992 |
| 3566 | Pelico Pipeline, LLC | | Oil Operator | Dec 2024 |
| 3567 | Pelto Oil Company | Houston, TX 77002 | Oil & Gas Operator | Nov 1998 |
| 3568 | Pend Oreille Oil & Gas Company | | Oil & Gas Operator | Sep 1989 |
| 3569 | Pengo Petroleum Inc | | Oil & Gas Operator | Dec 2013 |
| 3570 | Pengo Petroleum, Inc. & J.W.S. | | Oil & Gas Operator | Jul 1977 |
| 3571 | Pengo Producing Company | | Oil & Gas Operator | Mar 1987 |
| 3572 | Penn Exploration Corp. | | Gas Operator | Feb 1984 |
| 3573 | Penn Resources, Inc. | Dallas, TX 75219 | Oil & Gas Operator | Sep 1987 |
| 3574 | Penn VIrginia Oil & Gas Corp | Houston, TX 77024 | Oil & Gas Operator | Dec 2023 |
| 3575 | Penn VIrginia Oil & Gas, L.P. | Houston, TX 77084 | Oil & Gas Operator | Nov 2022 |
| 3576 | Pennington Oil & Gas Int, LLC | | Oil & Gas Operator | Dec 2024 |
| 3577 | Pennington Operating Company, LLC | | Oil & Gas Operator | Jul 2020 |
| 3578 | Pennzenergy Explor & Prod LLC | | Oil & Gas Operator | Dec 1999 |
| 3579 | Pennzoil Company | Midland, TX 79710-0090 | Oil & Gas Operator | Mar 2000 |
| 3580 | Pennzoil E & P & M H Marr | | Oil & Gas Operator | Sep 1993 |
| 3581 | Pennzoil E & P Co - Arco | | Oil & Gas Operator | Dec 1993 |
| 3582 | Pennzoil E & P Co - Clark Oil | | Oil & Gas Operator | Apr 1980 |
| 3583 | Pennzoil E & P Co Et Al | | Oil & Gas Operator | Feb 1999 |
| 3584 | Pennzoil E & P Co-Sohio Et Al | | Oil & Gas Operator | Jun 1991 |
| 3585 | Pennzoil E & P Co-Sohio Petr | | Oil & Gas Operator | Feb 1999 |
| 3586 | Pennzoil Exploration & Production Co. | Carthage, TX 75633 | Oil & Gas Operator | Mar 2008 |
| 3587 | Pennzoil Petroleum Company | Houston, TX 77252 | Oil & Gas Operator | Nov 1999 |
| 3588 | Pentagon Exploration | | Oil & Gas Operator | Dec 1991 |
| 3589 | Pentagon Petroleum, Inc. | | Oil & Gas Operator | Sep 1991 |
| 3590 | Penton And Penton | | Oil & Gas Operator | Jan 1983 |
| 3591 | Peoples Energy Prod.-TX, L.P. | Houston, TX 77002 | Oil & Gas Operator | Sep 2007 |
| 3592 | Perdido Energy Louisiana, LLC | | Oil & Gas Operator | Dec 2024 |
| 3593 | Perdura Energy L.L.C. | | Oil & Gas Operator | Apr 2018 |
| 3594 | Perdure Petroleum LLC | Allen, TX 75013 | Oil & Gas Operator | Oct 2021 |
| 3595 | Perenco LLC | Houston, TX 77002 | Oil & Gas Operator | Apr 2005 |
| 3596 | Perkins Oil Properties | | Oil & Gas Operator | Nov 2024 |
| 3597 | Permeator Corp. | | Oil Operator | Sep 1990 |
| 3598 | Perna Oil & Gas LLC | | Oil & Gas Operator | Nov 2024 |
| 3599 | Perry Point, Inc. | | Oil Operator | Mar 2022 |
| 3600 | Pesco | | Oil & Gas Operator | Oct 1984 |