| 3801 | Production Funds Inc | | Oil & Gas Operator | Nov 2001 |
| 3802 | Production Gauging Service Inc | | Oil Operator | Feb 1999 |
| 3803 | Production Management Corp. | | Oil & Gas Operator | Jul 1987 |
| 3804 | Proex Energy Management, L.L.C. | Spring, TX 77386 | Oil & Gas Operator | Feb 2026 |
| 3805 | Professional Petr. Servs, Inc. | | Oil Operator | Oct 2016 |
| 3806 | Progenies Operating LLC | Austin, TX 78746 | Oil & Gas Operator | Feb 2026 |
| 3807 | Progress Petroleum Co. | | Oil & Gas Operator | Apr 1993 |
| 3808 | Project Design Specialists Inc | | Oil & Gas Operator | May 1991 |
| 3809 | Prospective Investment & Trding Co LTD | | Oil & Gas Operator | Sep 2012 |
| 3810 | Prosper Energy Corp. | | Oil & Gas Operator | Oct 1988 |
| 3811 | Prospera Energy, Inc. | | Oil & Gas Operator | Dec 2005 |
| 3812 | Prostar Energy, LLC | | Oil Operator | Sep 2011 |
| 3813 | Proteus Petroleum, Inc. | | Oil & Gas Operator | Nov 1983 |
| 3814 | Proton Energy, L.L.C. | Houston, TX 77002 | Oil & Gas Operator | Jun 2005 |
| 3815 | Proven Fuel Exploration, Inc. | | Oil & Gas Operator | Mar 2022 |
| 3816 | Proven Oil Production | | Oil Operator | Mar 2002 |
| 3817 | Prudential Oil & Gas, Inc. | | Oil & Gas Operator | Jul 1987 |
| 3818 | Prudential Petroleum Co., LTD. | | Oil & Gas Operator | Dec 1990 |
| 3819 | Pruet - Hughes Company | | Oil & Gas Operator | Jan 1978 |
| 3820 | Pruet Production Co. | Jackson, MS 39201 | Oil & Gas Operator | Dec 2025 |
| 3821 | Pryme Energy, LLC | | Oil & Gas Operator | Feb 2015 |
| 3822 | PSC Industrial Outsourcing, LP | | Oil Operator | Dec 2024 |
| 3823 | PSM Oil Production LLC | | Oil Operator | Jan 2025 |
| 3824 | Pullco Services LLC | Jefferson, TX 75657 | Oil Operator | Feb 2026 |
| 3825 | Puma, Inc. | | Oil & Gas Operator | Oct 2000 |
| 3826 | Pure Resources, L.P. | Midland, TX 79701 | Oil & Gas Operator | Mar 2006 |
| 3827 | PV Of MS Inc | | Oil & Gas Operator | Jan 2019 |
| 3828 | PXP Gulf Coast Inc. | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 3829 | PXP Louisiana L.L.C. | | Oil & Gas Operator | Nov 2010 |
| 3830 | Pyramid Petroleum, Inc. | | Oil & Gas Operator | May 1992 |
| 3831 | Pyramid Petroleum, Inc.-La Div | | Oil Operator | Jun 1997 |
| 3832 | Pyro Energy Corp | Kingwood, TX 77339-2102 | Oil & Gas Operator | Mar 1998 |
| 3833 | Q. F. Sagdahl | | Oil Operator | Feb 2019 |
| 3834 | Q.E.D., Inc. | | Oil & Gas Operator | Dec 1987 |
| 3835 | Qep Energy Company | Midland, TX 79701 | Oil & Gas Operator | Nov 2025 |
| 3836 | Quad L Oil Company | | Oil & Gas Operator | Dec 2024 |
| 3837 | Quadrant Exploration Inc | Marietta, OH 45750 | Oil & Gas Operator | Dec 2000 |
| 3838 | Quality Petroleum Corp. | | Oil & Gas Operator | Apr 1990 |
| 3839 | Quality Petroleum, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Jan 2022 |
| 3840 | Quality Production SVC. LLC | | Oil & Gas Operator | Jul 2005 |
| 3841 | Quanah Petroleum, Inc. | | Oil & Gas Operator | Sep 1983 |
| 3842 | Quantent Energy Partners Operating LLC | | Gas Operator | Dec 2024 |
| 3843 | Quantum Resources MGMT, LLC | | Oil & Gas Operator | Nov 2014 |
| 3844 | Quarles Drilling Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Feb 2008 |
| 3845 | Quasha Oil Co. | | Oil & Gas Operator | Feb 1998 |
| 3846 | Queen Sand Operating Co. | Dallas, TX 75240 | Oil & Gas Operator | Mar 2008 |
| 3847 | Quest Energies | | Oil & Gas Operator | Mar 1997 |
| 3848 | Quest Energies Group,LTD. | Shreveport, LA 71106 | Oil & Gas Operator | Mar 1997 |
| 3849 | Quest Energies, L.L.C. | | Oil & Gas Operator | Jan 2025 |
| 3850 | Quest Exploration L.L.C. | | Oil & Gas Operator | Jul 2014 |
| 3851 | Questar Expl. And Prod. Co. | Salt Lake Cty, UT 84145 | Oil & Gas Operator | Jul 2011 |
| 3852 | Quiet Sun Investments, Inc. | | Oil & Gas Operator | Sep 2012 |
| 3853 | Quinoco Petroleum Inc | | Oil & Gas Operator | Dec 1990 |
| 3854 | Quintana Petroleum Corporation | Denver, CO 80265 | Oil & Gas Operator | Mar 1998 |
| 3855 | Quintana Production Co. | | Oil & Gas Operator | Feb 1987 |
| 3856 | Quintana-H H Cullen-Carl O&G | | Oil & Gas Operator | Jul 1984 |
| 3857 | R & B Oil Company, LLC Of Texas | | Oil & Gas Operator | Jan 2025 |
| 3858 | R & C Petroleum, Inc. | Flint, TX 75762 | Oil & Gas Operator | Feb 2026 |
| 3859 | R & D Holdings, Inc. | | Gas Operator | Feb 1991 |
| 3860 | R & F Land Co., Inc. | | Oil & Gas Operator | Jan 2000 |
| 3861 | R & H Oil & Gas Inc | | Oil & Gas Operator | Apr 1992 |
| 3862 | R & M Oil Co. | Fredonia, KS 66736 | Oil & Gas Operator | Aug 2002 |
| 3863 | R & P Oil Co. | | Oil & Gas Operator | Jul 2014 |
| 3864 | R & R Oil Company | Pampa, TX 79065 | Oil & Gas Operator | Jul 2002 |
| 3865 | R & R Production Company | | Oil Operator | Feb 2000 |
| 3866 | R & R Production, Inc. | | Oil & Gas Operator | Feb 1990 |
| 3867 | R & W Patrick | | Oil & Gas Operator | Oct 2008 |
| 3868 | R A Nobile | | Oil & Gas Operator | Nov 1989 |
| 3869 | R C Henderson Jr | | Oil Operator | Dec 1990 |
| 3870 | R D V, Inc. | | Oil Operator | May 2004 |
| 3871 | R H Energy Co Inc | | Oil & Gas Operator | Sep 1989 |
| 3872 | R L Kelly, SR. | | Oil Operator | Feb 2009 |
| 3873 | R L Operating Co LLC | | Oil Operator | Aug 2024 |
| 3874 | R&F Operating Company | Carthage, TX 75633 | Oil Operator | Feb 2026 |
| 3875 | R&R Resources Corporation | Houston, TX 77056 | Oil & Gas Operator | Dec 2015 |
| 3876 | R. & R. Exploration, Inc. | Denton, TX 76202 | Oil Operator | Nov 1993 |
| 3877 | R. A. Bridges | | Oil Operator | Jun 1991 |
| 3878 | R. A. Campbell Company | | Oil & Gas Operator | Nov 1995 |
| 3879 | R. C. Production | | Oil & Gas Operator | Nov 2024 |
| 3880 | R. D. Briscoe, Inc. | | Oil & Gas Operator | Nov 2024 |
| 3881 | R. E. Markham | | Oil & Gas Operator | Mar 1995 |
| 3882 | R. E. Markham Et Al | | Gas Operator | Jun 1996 |
| 3883 | R. H. Davis | | Oil Operator | Apr 2001 |
| 3884 | R. J. Davenport | | Oil Operator | May 1985 |
| 3885 | R. L. Burns Corp. | | Oil & Gas Operator | Feb 1982 |
| 3886 | R. L. Davis | | Oil Operator | Dec 2024 |
| 3887 | R. L. Dempsey | | Oil Operator | Jun 1985 |
| 3888 | R. M. Hobbs | | Oil Operator | Sep 2000 |
| 3889 | R. Pannell Oil Company | Kilgore, TX 75663 | Oil Operator | Jan 2025 |
| 3890 | R. V. Drummond, Et Al | | Oil Operator | Nov 1999 |
| 3891 | R. W. Ellington, Jr. | | Gas Operator | May 1985 |
| 3892 | R. W. Tyson Producing Co.,Inc | | Oil & Gas Operator | Dec 2024 |
| 3893 | R. W. Wilson | | Gas Operator | May 1988 |
| 3894 | R.A. Campbell & Dale Expl | | Oil Operator | Nov 1995 |
| 3895 | R.B. Evans | | Gas Operator | Aug 1985 |
| 3896 | R.C.Bertolet & Serio Expl Co | | Oil & Gas Operator | Nov 1992 |
| 3897 | R.Chisum, Jr. & L. Shepherd | | Oil & Gas Operator | Nov 2001 |
| 3898 | R.E. McDowell & Dave Gammill | | Oil Operator | May 1978 |
| 3899 | R/C Holdings, Inc. | | Oil & Gas Operator | Dec 1991 |
| 3900 | R360 Environmental Solutions Of La, LLC | | Oil Operator | Jan 2025 |