| 3701 | Primos Oil & Gas Corp. | | Gas Operator | Dec 2001 |
| 3702 | Primos Production | | Oil & Gas Operator | Dec 2024 |
| 3703 | Primos-Pennzoil JV | | Gas Operator | Feb 2005 |
| 3704 | Pritchard Engineering | | Oil & Gas Operator | Mar 1989 |
| 3705 | Prize Operating Company | Grapevine, TX 76051 | Oil & Gas Operator | Aug 2016 |
| 3706 | Probe Offshore, LLC | Houston, TX 77002 | Oil & Gas Operator | Feb 2009 |
| 3707 | Procell & Procell | | Oil & Gas Operator | Jan 2003 |
| 3708 | Producers Gas Transmission Inc | | Oil Operator | Nov 2024 |
| 3709 | Production Funds Inc | | Oil & Gas Operator | Nov 2001 |
| 3710 | Production Gauging Service Inc | | Oil Operator | Feb 1999 |
| 3711 | Production Management Corp. | | Oil & Gas Operator | Jul 1987 |
| 3712 | Proex Energy Management, L.L.C. | Spring, TX 77386 | Oil & Gas Operator | Apr 2025 |
| 3713 | Professional Petr. Servs, Inc. | | Oil Operator | Oct 2016 |
| 3714 | Progenies Operating LLC | Austin, TX 78746 | Oil & Gas Operator | Apr 2025 |
| 3715 | Progress Petroleum Co. | | Oil & Gas Operator | Apr 1993 |
| 3716 | Project Design Specialists Inc | | Oil & Gas Operator | May 1991 |
| 3717 | Prospective Investment & Trding Co LTD | | Oil & Gas Operator | Sep 2012 |
| 3718 | Prosper Energy Corporation | | Oil & Gas Operator | Oct 1988 |
| 3719 | Prospera Energy, Inc. | | Oil & Gas Operator | Dec 2005 |
| 3720 | Prostar Energy, LLC | | Oil Operator | Sep 2011 |
| 3721 | Proteus Petroleum, Inc. | | Oil & Gas Operator | Nov 1983 |
| 3722 | Proton Energy, L.L.C. | Houston, TX 77002 | Oil & Gas Operator | Jun 2005 |
| 3723 | Proven Fuel Exploration, Inc. | | Oil & Gas Operator | Mar 2022 |
| 3724 | Proven Oil Production | | Oil Operator | Mar 2002 |
| 3725 | Prudential Oil & Gas, Inc. | | Oil & Gas Operator | Jul 1987 |
| 3726 | Prudential Petroleum Co., LTD. | | Oil & Gas Operator | Dec 1990 |
| 3727 | Pruet & Hughes Co. | | Oil & Gas Operator | Jan 1978 |
| 3728 | Pruet Production Co. | Jackson, MS 39201 | Oil & Gas Operator | Feb 2025 |
| 3729 | Pryme Energy, LLC | | Oil & Gas Operator | Feb 2015 |
| 3730 | PSC Industrial Outsourcing, LP | | Oil Operator | Dec 2024 |
| 3731 | PSM Oil Production LLC | | Oil Operator | Jan 2025 |
| 3732 | Pullco Services LLC | Jefferson, TX 75657 | Oil Operator | Apr 2025 |
| 3733 | Puma, Inc. | | Oil & Gas Operator | Oct 2000 |
| 3734 | Pure Resources, L.P. | Midland, TX 79701 | Oil & Gas Operator | Mar 2006 |
| 3735 | PV Of MS Inc | | Oil & Gas Operator | Jan 2019 |
| 3736 | PXP Gulf Coast Inc. | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 3737 | PXP Louisiana L.L.C. | | Oil & Gas Operator | Nov 2010 |
| 3738 | Pyramid Petroleum, Inc. | | Oil & Gas Operator | May 1992 |
| 3739 | Pyramid Petroleum, Inc.-La Div | | Oil Operator | Jun 1997 |
| 3740 | Pyro Energy Corp | Kingwood, TX 77339-2102 | Oil & Gas Operator | Mar 1998 |
| 3741 | Q. F. Sagdahl | | Oil Operator | Feb 2019 |
| 3742 | Q.E.D., Inc. | | Oil & Gas Operator | Dec 1987 |
| 3743 | Qep Energy Company | Midland, TX 79701 | Oil & Gas Operator | Jan 2025 |
| 3744 | Quad L Oil Company | | Oil & Gas Operator | Dec 2024 |
| 3745 | Quadrant Exploration, Inc. | Marietta, OH 45750 | Oil & Gas Operator | Dec 2000 |
| 3746 | Quality Petroleum Corp. | | Oil & Gas Operator | Apr 1990 |
| 3747 | Quality Petroleum, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Jan 2022 |
| 3748 | Quality Production SVC. LLC | | Oil & Gas Operator | Jul 2005 |
| 3749 | Quanah Petroleum, Inc. | | Oil & Gas Operator | Sep 1983 |
| 3750 | Quantent Energy Partners Operating LLC | | Gas Operator | Dec 2024 |
| 3751 | Quantum Resources MGMT, LLC | | Oil & Gas Operator | Nov 2014 |
| 3752 | Quarles Drilling Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Feb 2008 |
| 3753 | Quasha Oil Co. | | Oil & Gas Operator | Feb 1998 |
| 3754 | Queen Sand Operating Co. | Dallas, TX 75240 | Oil & Gas Operator | Mar 2008 |
| 3755 | Quest Energies | | Oil & Gas Operator | Mar 1997 |
| 3756 | Quest Energies Group,LTD. | Shreveport, LA 71106 | Oil & Gas Operator | Mar 1997 |
| 3757 | Quest Energies, L.L.C. | | Oil & Gas Operator | Jan 2025 |
| 3758 | Quest Exploration L.L.C. | | Oil & Gas Operator | Jul 2014 |
| 3759 | Questar Expl. And Prod. Co. | Salt Lake Cty, UT 84145 | Oil & Gas Operator | Jul 2011 |
| 3760 | Quiet Sun Investments, Inc. | | Oil & Gas Operator | Sep 2012 |
| 3761 | Quinoco Petroleum Inc | | Oil & Gas Operator | Dec 1990 |
| 3762 | Quintana Petroleum Corporation | Denver, CO 80265 | Oil & Gas Operator | Mar 1998 |
| 3763 | Quintana Production Co. | | Oil & Gas Operator | Feb 1987 |
| 3764 | Quintana-H H Cullen-Carl O&G | | Oil & Gas Operator | Jul 1984 |
| 3765 | R & B Oil Company, LLC Of Texas | | Oil & Gas Operator | Jan 2025 |
| 3766 | R & C Petroleum, Inc. | Flint, TX 75762 | Oil & Gas Operator | Apr 2025 |
| 3767 | R & D Holdings, Inc. | | Gas Operator | Feb 1991 |
| 3768 | R & H Oil & Gas, Inc. | | Oil & Gas Operator | Apr 1992 |
| 3769 | R & M Oil Co. | Fredonia, KS 66736 | Oil & Gas Operator | Aug 2002 |
| 3770 | R & P Oil Co. | | Oil & Gas Operator | Jul 2014 |
| 3771 | R & R Oil Company | Pampa, TX 79065 | Oil & Gas Operator | Jul 2002 |
| 3772 | R & R Production Company | | Oil Operator | Feb 2000 |
| 3773 | R & R Production, Inc. | | Oil & Gas Operator | Feb 1990 |
| 3774 | R & W Patrick | | Oil & Gas Operator | Oct 2008 |
| 3775 | R A Nobile | | Oil & Gas Operator | Nov 1989 |
| 3776 | R C Henderson Jr | | Oil Operator | Dec 1990 |
| 3777 | R D V, Inc. | | Oil Operator | May 2004 |
| 3778 | R H Energy Co Inc | | Oil & Gas Operator | Sep 1989 |
| 3779 | R L Kelly, SR. | | Oil Operator | Feb 2009 |
| 3780 | R L Operating Co LLC | | Oil Operator | Aug 2024 |
| 3781 | R&F Operating Company | Carthage, TX 75633 | Oil Operator | Apr 2025 |
| 3782 | R&R Resources Corporation | Houston, TX 77056 | Oil & Gas Operator | Dec 2015 |
| 3783 | R. & F. Land Company | | Oil & Gas Operator | Jan 2000 |
| 3784 | R. & R. Exploration, Inc. | Denton, TX 76202 | Oil Operator | Nov 1993 |
| 3785 | R. A. Bridges | | Oil Operator | Jun 1991 |
| 3786 | R. A. Campbell Company | | Oil & Gas Operator | Nov 1995 |
| 3787 | R. C. Production | | Oil & Gas Operator | Nov 2024 |
| 3788 | R. D. Briscoe, Inc. | | Oil & Gas Operator | Nov 2024 |
| 3789 | R. E. Markham | | Oil & Gas Operator | Mar 1995 |
| 3790 | R. E. Markham Et Al | | Gas Operator | Jun 1996 |
| 3791 | R. H. Davis | | Oil Operator | Apr 2001 |
| 3792 | R. J. Davenport | | Oil Operator | May 1985 |
| 3793 | R. L. Burns Corp. | | Oil & Gas Operator | Feb 1982 |
| 3794 | R. L. Davis | | Oil Operator | Dec 2024 |
| 3795 | R. L. Dempsey | | Oil Operator | Jun 1985 |
| 3796 | R. M. Hobbs | | Oil Operator | Sep 2000 |
| 3797 | R. Pannell Oil Company | Kilgore, TX 75663 | Oil Operator | Jan 2025 |
| 3798 | R. V. Drummond, Et Al | | Oil Operator | Nov 1999 |
| 3799 | R. W. Ellington, Jr. | | Gas Operator | May 1985 |
| 3800 | R. W. Tyson Producing Co.,Inc | | Oil & Gas Operator | Dec 2024 |