| 3601 | Pine Prairie Oil Co., Inc. | | Oil & Gas Operator | Nov 1983 |
| 3602 | Pine Top Energy Inc. | | Oil & Gas Operator | May 1997 |
| 3603 | Pine Wave Energy Partners Operating, LLC | | Gas Operator | Apr 2022 |
| 3604 | Pinnacle Energy, LLC | | Oil & Gas Operator | Jan 2025 |
| 3605 | Pinnacle Operating Company, Inc. | Shreveport, LA 71135 | Oil & Gas Operator | Sep 2025 |
| 3606 | Pintail Minerals Corp. | | Gas Operator | Jun 1992 |
| 3607 | Pintail Oil & Gas, LLC | Midland, TX 79702 | Oil & Gas Operator | Dec 2019 |
| 3608 | Pioneer Exploration Company | Houston, TX 77090 | Oil & Gas Operator | Jul 2025 |
| 3609 | Pioneer Exploration, LLC | Houston, TX 77090 | Oil & Gas Operator | Jul 2025 |
| 3610 | Pioneer Exploration, LTD. | Houston, TX 77090 | Oil & Gas Operator | Sep 2008 |
| 3611 | Pioneer Natural Res. (GPC), Inc. | Midland, TX 79702 | Oil & Gas Operator | Apr 1998 |
| 3612 | Pioneer Natural Resources USA Inc | Irving, TX 75039 | Oil & Gas Operator | May 2025 |
| 3613 | Pioneer Prod. Corp. | | Oil & Gas Operator | Jun 1986 |
| 3614 | Pioneer Production Corp-Huggs | | Oil & Gas Operator | Jun 1986 |
| 3615 | Pioneer Resources Producing, L.P | Irving, TX 75039 | Oil & Gas Operator | Feb 2001 |
| 3616 | Pita Oil & Gas, LLC | | Oil Operator | Jul 2004 |
| 3617 | Pittencrieff (Gulf Coast), Inc. | Abilene, TX 79608 | Oil & Gas Operator | Sep 1998 |
| 3618 | Pittencrieff America, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Feb 2003 |
| 3619 | Pitts Oil Co-Dallas Prod Inc | | Oil & Gas Operator | Jun 1991 |
| 3620 | Placid Oil Co., Et Al | | Oil & Gas Operator | Jun 1983 |
| 3621 | Placid Oil Company | Houston, TX 77227 | Oil & Gas Operator | Mar 2008 |
| 3622 | Plains Resources Inc. | Houston, TX 77002 | Oil & Gas Operator | Jul 2008 |
| 3623 | Planet Operating, LLC | | Oil & Gas Operator | Dec 2024 |
| 3624 | Planet Resource Operating, LLC | | Oil & Gas Operator | Nov 2024 |
| 3625 | Plano Corp. | | Oil & Gas Operator | Mar 2005 |
| 3626 | Plantation Oil Company | | Oil Operator | Dec 2006 |
| 3627 | Plantation Operating, LLC | Houston, TX 77041 | Oil & Gas Operator | Nov 2011 |
| 3628 | Platt Oil Production | | Oil & Gas Operator | Jan 2007 |
| 3629 | Playa Oil & Gas, LP | | Oil & Gas Operator | Apr 2009 |
| 3630 | Pledger West Broussard Operating, LLC | | Oil & Gas Operator | Dec 2024 |
| 3631 | Ploutos, LLC | | Oil Operator | May 2021 |
| 3632 | Plumb Operating Company, Inc. | | Oil & Gas Operator | Dec 1989 |
| 3633 | Plymouth Resource Group LLC | | Oil & Gas Operator | Dec 1999 |
| 3634 | Plymouth Resource GRP 1998 LLC | | Oil & Gas Operator | Mar 2000 |
| 3635 | Plymouth Resources Group II Inc | | Oil & Gas Operator | May 2007 |
| 3636 | Pmo | Garland, TX 75040 | Oil & Gas Operator | Feb 2018 |
| 3637 | Pogo Producing Company | Houston, TX 77002 | Oil & Gas Operator | Jan 2008 |
| 3638 | Pointe Coupee Energy, Inc | | Oil Operator | Dec 2013 |
| 3639 | Polaris Enterprises Inc | Houston, TX 77057 | Oil & Gas Operator | Oct 1998 |
| 3640 | Polaris-MRM Production Co. | | Oil Operator | Nov 1985 |
| 3641 | Pomfret Production Co., Inc. | | Oil & Gas Operator | Feb 1987 |
| 3642 | Pompano Resource Operator LLC | | Oil & Gas Operator | Jun 2025 |
| 3643 | Ponderosa Oil & Gas, LLC | Houston, TX 77008 | Oil & Gas Operator | Sep 2025 |
| 3644 | Pontchartrain Oil & Gas Corp 2 | | Oil & Gas Operator | Dec 1984 |
| 3645 | Pool Company | | Oil Operator | Dec 2002 |
| 3646 | Pool Production Services | | Oil Operator | Aug 1990 |
| 3647 | Port Hudson Operating Company | | Oil & Gas Operator | Nov 2024 |
| 3648 | Post Petroleum Company | Oklahoma City, OK 73116 | Oil & Gas Operator | Aug 2013 |
| 3649 | Power Reserves, Inc. | | Oil Operator | Feb 1999 |
| 3650 | Poydras Energy Partners, LLC | | Oil & Gas Operator | Dec 2021 |
| 3651 | Prairie Producing Company | | Oil & Gas Operator | Dec 1992 |
| 3652 | Prayer Oil & Gas Production, LLC | Hallsville, TX 75650 | Oil & Gas Operator | Sep 2025 |
| 3653 | Precio Energy, LLC | Beaumont, TX 77726 | Oil & Gas Operator | Sep 2025 |
| 3654 | Precision Holdings, LLC | | Oil & Gas Operator | Dec 2015 |
| 3655 | Premience Energy LLC | | Oil & Gas Operator | Dec 2024 |
| 3656 | Premience Tepetate LLC | | Oil & Gas Operator | Jul 2014 |
| 3657 | Premier Natural Resources II,LLC | Tulsa, OK 74105 | Oil & Gas Operator | Feb 2015 |
| 3658 | Prentice Oil & Gas Company | | Oil & Gas Operator | Nov 1982 |
| 3659 | Presidio Energy, Inc. | | Oil & Gas Operator | Jan 1992 |
| 3660 | Presidio Exploration, Inc. | Englewood, CO 80155 | Oil & Gas Operator | May 1999 |
| 3661 | Presidio Oil & Gas, Inc. | | Oil & Gas Operator | Dec 2024 |
| 3662 | Pride Energy Company | Tulsa, OK 74170 | Oil & Gas Operator | Sep 2025 |
| 3663 | Pride Exploration, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Jul 2015 |
| 3664 | Primary Energy Co. | | Gas Operator | Jul 1999 |
| 3665 | Primary Fuels, Inc. | Midland, TX 79701-4410 | Oil & Gas Operator | Mar 1991 |
| 3666 | Prime Natural Resources, Inc. | Houston, TX 77042 | Oil & Gas Operator | Jun 2007 |
| 3667 | Prime Operating Company | Houston, TX 77024 | Oil & Gas Operator | Sep 2025 |
| 3668 | Prime Rock Resources La LLC | | Oil & Gas Operator | Dec 2024 |
| 3669 | Primos & Luffey Gas Co. | | Gas Operator | May 2021 |
| 3670 | Primos Oil & Gas Corp. | | Gas Operator | Dec 2001 |
| 3671 | Primos Production | | Oil & Gas Operator | Dec 2024 |
| 3672 | Primos-Pennzoil JV | | Gas Operator | Feb 2005 |
| 3673 | Pritchard Engineering | | Oil & Gas Operator | Mar 1989 |
| 3674 | Prize Operating Company | Grapevine, TX 76051 | Oil & Gas Operator | Aug 2016 |
| 3675 | Prize Petroleum, LLC | Houston, TX 77042 | Oil & Gas Operator | Jun 2012 |
| 3676 | Probe Offshore, LLC | Houston, TX 77002 | Oil & Gas Operator | Feb 2009 |
| 3677 | Procell & Procell | | Oil & Gas Operator | Jan 2003 |
| 3678 | Producers Gas Transmission Inc | | Oil Operator | Nov 2024 |
| 3679 | Production Funds Inc | | Oil & Gas Operator | Nov 2001 |
| 3680 | Production Gauging Service Inc | | Oil Operator | Feb 1999 |
| 3681 | Production Management Corp. | | Oil & Gas Operator | Jul 1987 |
| 3682 | Proex Energy Management, L.L.C. | Spring, TX 77386 | Oil & Gas Operator | Sep 2025 |
| 3683 | Professional Petr. Servs, Inc. | | Oil Operator | Oct 2016 |
| 3684 | Progenies Operating LLC | Austin, TX 78746 | Oil & Gas Operator | Sep 2025 |
| 3685 | Progress Petroleum Co. | | Oil & Gas Operator | Apr 1993 |
| 3686 | Project Design Specialists Inc | | Oil & Gas Operator | May 1991 |
| 3687 | Prospective Investment & Trding Co LTD | | Oil & Gas Operator | Sep 2012 |
| 3688 | Prosper Energy Corporation | | Oil & Gas Operator | Oct 1988 |
| 3689 | Prospera Energy, Inc. | | Oil & Gas Operator | Dec 2005 |
| 3690 | Prostar Energy, LLC | | Oil Operator | Sep 2011 |
| 3691 | Proteus Petroleum, Inc. | | Oil & Gas Operator | Nov 1983 |
| 3692 | Proton Energy, L.L.C. | Houston, TX 77002 | Oil & Gas Operator | Jun 2005 |
| 3693 | Proven Fuel Exploration, Inc. | | Oil & Gas Operator | Mar 2022 |
| 3694 | Proven Oil Production | | Oil Operator | Mar 2002 |
| 3695 | Prudential Oil & Gas, Inc. | | Oil & Gas Operator | Jul 1987 |
| 3696 | Prudential Petroleum Co., LTD. | | Oil & Gas Operator | Dec 1990 |
| 3697 | Pruet & Hughes Co. | | Oil & Gas Operator | Jan 1978 |
| 3698 | Pruet Production Co. | Jackson, MS 39201 | Oil & Gas Operator | Jul 2025 |
| 3699 | Pryme Energy, LLC | | Oil & Gas Operator | Feb 2015 |
| 3700 | PSC Industrial Outsourcing, LP | | Oil Operator | Dec 2024 |