| 3501 | Phoenix Opr Co Inc-Shemen | | Oil Operator | Dec 1992 |
| 3502 | Phoenix Opr Co Inc-TG I | | Oil Operator | Dec 1992 |
| 3503 | Phoenix Opr Co Inc-TG II | | Oil Operator | Dec 1992 |
| 3504 | Phoenix Opr Co Inc-Vista | | Oil Operator | Dec 1992 |
| 3505 | Phoenix Opr Co Inc-York | | Oil Operator | Dec 1992 |
| 3506 | Phoenix Resources Co | | Oil & Gas Operator | Jun 1984 |
| 3507 | Phoenix-Vi-Roi | | Oil & Gas Operator | Mar 1986 |
| 3508 | Pickens Company, Inc., The | Dallas, TX 75225 | Oil & Gas Operator | Feb 2024 |
| 3509 | Pie La Operating, LLC | | Oil & Gas Operator | Nov 2023 |
| 3510 | Pierce Production Company | Eunice, NM 88231 | Oil & Gas Operator | Oct 2012 |
| 3511 | Pilot Resources, Inc. | | Oil & Gas Operator | May 2013 |
| 3512 | Pine Island Operating, L.L.C. | Graham, TX 76450 | Oil & Gas Operator | May 2024 |
| 3513 | Pine Island Production LLC | | Oil Operator | Jan 2024 |
| 3514 | Pine Pipeline, Inc. | | Oil Operator | Dec 1998 |
| 3515 | Pine Prairie Oil Co., Inc. | | Oil & Gas Operator | Nov 1983 |
| 3516 | Pine Wave Energy Partners Operating, LLC | | Gas Operator | Apr 2022 |
| 3517 | Pinnacle Energy, LLC | | Oil & Gas Operator | Jan 2024 |
| 3518 | Pinnacle Operating Company, Inc. | Shreveport, LA 71135 | Oil & Gas Operator | May 2024 |
| 3519 | Pintail Minerals Corp. | | Gas Operator | Jun 1992 |
| 3520 | Pintail Oil & Gas, LLC | Midland, TX 79702 | Oil & Gas Operator | Dec 2019 |
| 3521 | Pioneer Exploration Company | Houston, TX 77090 | Oil & Gas Operator | Feb 2024 |
| 3522 | Pioneer Exploration, LLC | Houston, TX 77090 | Oil & Gas Operator | Mar 2024 |
| 3523 | Pioneer Exploration, LTD. | Houston, TX 77090 | Oil & Gas Operator | Sep 2008 |
| 3524 | Pioneer Natural Res. (GPC), Inc. | Midland, TX 79702 | Oil & Gas Operator | Apr 1998 |
| 3525 | Pioneer Natural Resources USA Inc | Irving, TX 75039 | Oil & Gas Operator | Jan 2024 |
| 3526 | Pioneer Prod. Corp. | | Oil & Gas Operator | Jun 1986 |
| 3527 | Pioneer Production Corp-Huggs | | Oil & Gas Operator | Jun 1986 |
| 3528 | Pioneer Resources Producing, L.P | Irving, TX 75039 | Oil & Gas Operator | Feb 2001 |
| 3529 | Pita Oil & Gas, LLC | | Oil Operator | Jul 2004 |
| 3530 | Pittencrieff (Gulf Coast), Inc. | Abilene, TX 79608 | Oil & Gas Operator | Sep 1998 |
| 3531 | Pittencrieff America Inc | Abilene, TX 79608 | Oil & Gas Operator | Feb 2003 |
| 3532 | Pitts Oil Co-Dallas Prod Inc | | Oil & Gas Operator | Jun 1991 |
| 3533 | Placid Oil Co., Et Al | | Oil & Gas Operator | Jun 1983 |
| 3534 | Placid Oil Company | Houston, TX 77227 | Oil & Gas Operator | Mar 2008 |
| 3535 | Plains Resources Inc. | Houston, TX 77002 | Oil & Gas Operator | Jul 2008 |
| 3536 | Planet Operating, LLC | | Oil & Gas Operator | Dec 2023 |
| 3537 | Planet Resource Operating, LLC | | Oil & Gas Operator | Dec 2023 |
| 3538 | Plano Corp. | | Oil & Gas Operator | Mar 2005 |
| 3539 | Plantation Oil Company | | Oil Operator | Dec 2006 |
| 3540 | Plantation Operating, LLC | Houston, TX 77041 | Oil & Gas Operator | Nov 2011 |
| 3541 | Platt Oil Production | | Oil & Gas Operator | Jan 2007 |
| 3542 | Playa Oil & Gas, LP | | Oil & Gas Operator | Apr 2009 |
| 3543 | Pledger West Broussard Operating, LLC | | Oil & Gas Operator | Nov 2023 |
| 3544 | Ploutos, LLC | | Oil Operator | May 2021 |
| 3545 | Plumb Operating Company, Inc. | | Oil & Gas Operator | Dec 1989 |
| 3546 | Plymouth Resource Group LLC | | Oil & Gas Operator | Dec 1999 |
| 3547 | Plymouth Resource GRP 1998 LLC | | Oil & Gas Operator | Mar 2000 |
| 3548 | Plymouth Resources Group II Inc | | Oil & Gas Operator | May 2007 |
| 3549 | Pmo | Garland, TX 75040 | Oil & Gas Operator | Feb 2018 |
| 3550 | Pogo Producing Company | Houston, TX 77002 | Oil & Gas Operator | Jan 2008 |
| 3551 | Pointe Coupee Energy, Inc | | Oil Operator | Dec 2013 |
| 3552 | Polaris Enterprises Inc | Houston, TX 77057 | Oil & Gas Operator | Oct 1998 |
| 3553 | Polaris-MRM Production Co. | | Oil Operator | Nov 1985 |
| 3554 | Pomfret Production Co., Inc. | | Oil & Gas Operator | Feb 1987 |
| 3555 | Pompano Resource Operator LLC | | Oil & Gas Operator | Feb 2024 |
| 3556 | Ponderosa Oil & Gas, LLC | Houston, TX 77008 | Oil & Gas Operator | May 2024 |
| 3557 | Pontchartrain Oil & Gas Corp 2 | | Oil & Gas Operator | Dec 1984 |
| 3558 | Pool Company | | Oil Operator | Dec 2002 |
| 3559 | Pool Production Services | | Oil Operator | Aug 1990 |
| 3560 | Port Hudson Operating Company | | Oil & Gas Operator | Nov 2023 |
| 3561 | Post Petroleum Company | Oklahoma City, OK 73116 | Oil & Gas Operator | Aug 2013 |
| 3562 | Power Reserves, Inc. | | Oil Operator | Feb 1999 |
| 3563 | Poydras Energy Partners, LLC | | Oil & Gas Operator | Dec 2021 |
| 3564 | Prairie Producing Company | | Oil & Gas Operator | Dec 1992 |
| 3565 | Prayer Oil & Gas Production, LLC | Hallsville, TX 75650 | Oil & Gas Operator | May 2024 |
| 3566 | Precio Energy, LLC | Beaumont, TX 77726 | Oil & Gas Operator | May 2024 |
| 3567 | Precision Holdings, LLC | | Oil & Gas Operator | Dec 2015 |
| 3568 | Premience Energy LLC | | Oil & Gas Operator | Nov 2023 |
| 3569 | Premience Tepetate LLC | | Oil & Gas Operator | Jul 2014 |
| 3570 | Premier Natural Resources II,LLC | Tulsa, OK 74105 | Oil & Gas Operator | Feb 2015 |
| 3571 | Prentice Oil & Gas Company | | Oil & Gas Operator | Nov 1982 |
| 3572 | Presidio Energy, Inc. | | Oil & Gas Operator | Jan 1992 |
| 3573 | Presidio Exploration, Inc. | Englewood, CO 80155 | Oil & Gas Operator | May 1999 |
| 3574 | Presidio Oil & Gas, Inc. | | Oil & Gas Operator | Dec 2023 |
| 3575 | Pride Energy Company | Tulsa, OK 74170 | Oil & Gas Operator | May 2024 |
| 3576 | Pride Exploration, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Aug 2015 |
| 3577 | Primary Energy Co. | | Gas Operator | Jul 1999 |
| 3578 | Primary Fuels Inc | Midland, TX 79701-4410 | Oil & Gas Operator | Mar 1991 |
| 3579 | Prime Natural Resources, Inc. | Houston, TX 77042 | Oil & Gas Operator | Jun 2007 |
| 3580 | Prime Operating Company | Houston, TX 77024 | Oil & Gas Operator | May 2024 |
| 3581 | Prime Rock Resources La LLC | | Oil & Gas Operator | Dec 2023 |
| 3582 | Primos Production | | Oil & Gas Operator | Dec 2023 |
| 3583 | Primos-Pennzoil JV | | Gas Operator | Feb 2005 |
| 3584 | Pritchard Engineering | | Oil & Gas Operator | Mar 1989 |
| 3585 | Prize Operating Company | Grapevine, TX 76051 | Oil & Gas Operator | Aug 2016 |
| 3586 | Probe Offshore, LLC | Houston, TX 77002 | Oil & Gas Operator | Feb 2009 |
| 3587 | Procell & Procell | | Oil & Gas Operator | Jan 2003 |
| 3588 | Producers Gas Transmission Inc | | Oil Operator | Nov 2023 |
| 3589 | Production Gauging Service Inc | | Oil Operator | Feb 1999 |
| 3590 | Production Management Corp. | | Oil & Gas Operator | Jul 1987 |
| 3591 | Proex Energy Management, L.L.C. | Spring, TX 77386 | Oil & Gas Operator | May 2024 |
| 3592 | Professional Petr. Servs, Inc. | | Oil Operator | Oct 2016 |
| 3593 | Progenies Operating LLC | Austin, TX 78746 | Oil & Gas Operator | May 2024 |
| 3594 | Progress Petroleum Co. | | Oil & Gas Operator | Apr 1993 |
| 3595 | Prospective Investment & Trding Co LTD | | Oil & Gas Operator | Aug 2012 |
| 3596 | Prosper Energy Corporation | | Oil & Gas Operator | Oct 1988 |
| 3597 | Prospera Energy, Inc. | | Oil & Gas Operator | Dec 2005 |
| 3598 | Prostar Energy, LLC | | Oil Operator | Sep 2011 |
| 3599 | Proteus Petroleum, Inc. | | Oil & Gas Operator | Nov 1983 |
| 3600 | Proton Energy, L.L.C. | Houston, TX 77002 | Oil & Gas Operator | Jun 2005 |