| 3401 | P & A Well Service | | Oil & Gas Operator | Jan 1994 |
| 3402 | P & P Producing Inc | Midland, TX 79702 | Oil & Gas Operator | Feb 2015 |
| 3403 | P D Parker | | Oil & Gas Operator | Aug 1985 |
| 3404 | P E Trichel | | Gas Operator | May 1980 |
| 3405 | P. B. Operating Company | | Oil & Gas Operator | Feb 1978 |
| 3406 | P. K. Smith | | Oil Operator | Mar 1997 |
| 3407 | P. S. & G., Incorporated | | Gas Operator | Aug 1983 |
| 3408 | P.C.S.I. | | Oil & Gas Operator | Jun 1987 |
| 3409 | P.M. Petroleum | | Oil Operator | Mar 1998 |
| 3410 | P.T.L. Operating Co. | | Oil Operator | Jun 2003 |
| 3411 | Pace Royalty Trust Fund, Inc. | Shreveport, LA 71135 | Oil & Gas Operator | Nov 2001 |
| 3412 | Pacific Atlantic Oil Co. | | Oil & Gas Operator | Dec 2003 |
| 3413 | Pacific Enterprises Oil Co USA | Dallas, TX 75201 | Oil & Gas Operator | Feb 2001 |
| 3414 | Pacific Enterprises Royalty Co | Oklahoma City, OK 73101 | Oil & Gas Operator | Feb 2002 |
| 3415 | Page Development, L.L.C. | | Oil Operator | Dec 2024 |
| 3416 | Painter Oil And Gas LTD. | | Oil & Gas Operator | Jun 1986 |
| 3417 | Palace Exploration Company | Houston, TX 77002 | Oil & Gas Operator | Mar 2007 |
| 3418 | Palace Operating Company | Tulsa, OK 74136 | Oil & Gas Operator | Aug 2009 |
| 3419 | Paladin Petroleum III, L.L.C. | Austin, TX 78746 | Oil & Gas Operator | Mar 2025 |
| 3420 | Palm Energy Offshore, L.L.C. | | Oil & Gas Operator | Apr 2019 |
| 3421 | Palmer Petroleum Inc. | Shreveport, LA 71105 | Oil & Gas Operator | Mar 2025 |
| 3422 | Palmetto Oil Co., Inc. | | Oil & Gas Operator | Jan 2025 |
| 3423 | Paloma Natural Gas, LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2024 |
| 3424 | Pan Petroleum MLP | Kansas City, MO 64114 | Oil & Gas Operator | Aug 1997 |
| 3425 | Pan-Ok Production Company | | Oil & Gas Operator | Nov 2024 |
| 3426 | Panaco Production Co | Houston, TX 77002 | Oil & Gas Operator | Dec 1999 |
| 3427 | Panaco, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Oct 2024 |
| 3428 | Panenergy La Intrastate Co | | Oil Operator | Mar 2000 |
| 3429 | Panola Energy Corporation | | Gas Operator | Mar 1980 |
| 3430 | Panotech Exploration Corp. | | Oil & Gas Operator | Jan 1983 |
| 3431 | Panther Bayou Energy, LLC | Houston, TX 77070 | Oil & Gas Operator | Apr 2021 |
| 3432 | Paoco-Walker | | Gas Operator | Sep 2011 |
| 3433 | Par Expl Co & Taurus Petroleum | | Gas Operator | Mar 1984 |
| 3434 | Par Exploration Co | | Oil & Gas Operator | Oct 1986 |
| 3435 | Par Minerals Corporation | Shreveport, LA 71101 | Oil & Gas Operator | Mar 2025 |
| 3436 | Par Oil Corporation | | Oil & Gas Operator | Sep 1990 |
| 3437 | Par Oil Corporation, Et Al | | Oil & Gas Operator | Dec 1984 |
| 3438 | Par-Naylor | | Oil Operator | Mar 1985 |
| 3439 | Paradigm Energy LLC | Lenexa, KS 66227 | Oil & Gas Operator | Dec 2024 |
| 3440 | Paragon Resources, Inc | | Oil & Gas Operator | Nov 1991 |
| 3441 | Park Exploration Inc | | Oil & Gas Operator | Nov 2012 |
| 3442 | Parker & Parsley Development Co. | Midland, TX 79702 | Oil & Gas Operator | May 1995 |
| 3443 | Parker & Parsley Devpt L P | | Oil & Gas Operator | Oct 1997 |
| 3444 | Parker & Parsley Petroleum Co. | | Oil & Gas Operator | Dec 1990 |
| 3445 | Parker & Parsley Producing LP | Midland, TX 79702 | Oil & Gas Operator | Oct 1997 |
| 3446 | Parker Enterprises, Inc. | | Oil & Gas Operator | Jun 1999 |
| 3447 | Parker Oil Company | Abilene, TX 79601 | Oil & Gas Operator | Feb 2024 |
| 3448 | Parnes Oil Company | | Oil Operator | Jul 1994 |
| 3449 | Partners Oil Company | Tulsa, OK 74135 | Oil & Gas Operator | Aug 1995 |
| 3450 | Patkim Production Inc. | | Oil Operator | Jan 2025 |
| 3451 | Patrick Petroleum Corp. | | Oil & Gas Operator | Oct 1984 |
| 3452 | Patterson Resources, Inc. | | Oil & Gas Operator | Apr 1984 |
| 3453 | Patton Operating Co. | Kilgore, TX 75663 | Oil & Gas Operator | Nov 1997 |
| 3454 | Paul E. Cameron, Jr., Inc. | | Oil & Gas Operator | May 2003 |
| 3455 | Paul Gowan-Miss. Ventures | | Gas Operator | Jan 1990 |
| 3456 | Paul Guido | | Oil Operator | Oct 1998 |
| 3457 | Paul J. Ross | | Oil Operator | Dec 1986 |
| 3458 | Paul M. Toce | | Oil & Gas Operator | Jul 1984 |
| 3459 | Pawnee Oil And Gas, Inc. | Richardson, TX 75083 | Oil & Gas Operator | May 2023 |
| 3460 | Paxton Oil Company | | Oil & Gas Operator | Dec 2024 |
| 3461 | Paxton Petroleum, LTD. | | Oil & Gas Operator | May 1989 |
| 3462 | Pay Oil, L. L. C. | | Oil & Gas Operator | Jan 2025 |
| 3463 | Pay Operating, LLC | | Oil & Gas Operator | Dec 2024 |
| 3464 | Pay Ventures, L.L.C. | | Oil Operator | Dec 2024 |
| 3465 | Peachtree Production Co. | | Oil & Gas Operator | Mar 1981 |
| 3466 | Peak Operating Co. | | Oil & Gas Operator | Jul 2024 |
| 3467 | Pearl Resources Inc. | | Oil & Gas Operator | Jul 1990 |
| 3468 | Pecos Petroleum Company | Houston, TX 77057 | Oil & Gas Operator | Oct 1999 |
| 3469 | Pecos Western Corporation | | Gas Operator | Feb 1992 |
| 3470 | Pedernales Petroleum Operating, LLC | | Oil & Gas Operator | Dec 2024 |
| 3471 | Pedernales Production, LP | Houston, TX 77057 | Oil & Gas Operator | Mar 2022 |
| 3472 | Pel-Tex - McMoran | | Oil & Gas Operator | Dec 1985 |
| 3473 | Pel-Tex Oil Company, Inc. | | Oil & Gas Operator | Jul 1995 |
| 3474 | Pel-Tex Oil Company, LLC | | Oil & Gas Operator | Nov 2010 |
| 3475 | Pel-Tex, Inc. | | Oil & Gas Operator | Jul 1985 |
| 3476 | Pelican Dome Exploration Inc | Harahan, LA 70123 | Oil & Gas Operator | Aug 2000 |
| 3477 | Pelican Gas Prod. Assoc. | | Oil & Gas Operator | Oct 1987 |
| 3478 | Pelican Producing Co. | | Gas Operator | Nov 1992 |
| 3479 | Pelico Pipeline, LLC | | Oil Operator | Dec 2024 |
| 3480 | Pelto Oil Co | Houston, TX 77002 | Oil & Gas Operator | Nov 1998 |
| 3481 | Pend Oreille Oil & Gas Company | | Oil & Gas Operator | Sep 1989 |
| 3482 | Pengo Petroleum, Inc. | | Oil & Gas Operator | Dec 2013 |
| 3483 | Pengo Petroleum, Inc. & J.W.S. | | Oil & Gas Operator | Jul 1977 |
| 3484 | Pengo Producing Company | | Oil & Gas Operator | Mar 1987 |
| 3485 | Penn Exploration Corp. | | Gas Operator | Feb 1984 |
| 3486 | Penn Resources, Inc. | Dallas, TX 75219 | Oil & Gas Operator | Sep 1987 |
| 3487 | Penn VIrginia Oil & Gas Corp | Houston, TX 77024 | Oil & Gas Operator | Dec 2018 |
| 3488 | Penn VIrginia Oil & Gas, L.P. | Houston, TX 77084 | Oil & Gas Operator | Nov 2022 |
| 3489 | Pennington Oil & Gas Int, LLC | | Oil & Gas Operator | Dec 2024 |
| 3490 | Pennington Operating Company, LLC | | Oil & Gas Operator | Jul 2020 |
| 3491 | Pennzenergy Explor & Prod LLC | | Oil & Gas Operator | Dec 1999 |
| 3492 | Pennzoil Company | Midland, TX 79710-0090 | Oil & Gas Operator | Mar 2000 |
| 3493 | Pennzoil E & P & M H Marr | | Oil & Gas Operator | Sep 1993 |
| 3494 | Pennzoil E & P Co - Arco | | Oil & Gas Operator | Dec 1993 |
| 3495 | Pennzoil E & P Co - Clark Oil | | Oil & Gas Operator | Apr 1980 |
| 3496 | Pennzoil E & P Co Et Al | | Oil & Gas Operator | Feb 1999 |
| 3497 | Pennzoil E & P Co-Sohio Et Al | | Oil & Gas Operator | Jun 1991 |
| 3498 | Pennzoil E & P Co-Sohio Petr | | Oil & Gas Operator | Feb 1999 |
| 3499 | Pennzoil Exploration & Production Co. | Carthage, TX 75633 | Oil & Gas Operator | Mar 2008 |
| 3500 | Pennzoil Petroleum Company | Houston, TX 77252 | Oil & Gas Operator | Nov 1999 |