| 3701 | Quintana Petroleum Corporation | Denver, CO 80265 | Oil & Gas Operator | Mar 1998 |
| 3702 | Quintana Production Co. | | Oil & Gas Operator | Feb 1987 |
| 3703 | Quintana-H H Cullen-Carl O&G | | Oil & Gas Operator | Jul 1984 |
| 3704 | R & B Oil Company, LLC Of Texas | | Oil & Gas Operator | Jan 2025 |
| 3705 | R & C Petroleum, Inc. | Flint, TX 75762 | Oil & Gas Operator | Sep 2026 |
| 3706 | R & D Holdings, Inc. | | Gas Operator | Feb 1991 |
| 3707 | R & F Land Co., Inc. | | Oil & Gas Operator | Jan 2000 |
| 3708 | R & H Oil & Gas Inc | | Oil & Gas Operator | Apr 1992 |
| 3709 | R & M Oil Co. | Fredonia, KS 66736 | Oil & Gas Operator | Aug 2002 |
| 3710 | R & P Oil Co. | | Oil & Gas Operator | Jul 2014 |
| 3711 | R & R Oil Company | Pampa, TX 79065 | Oil & Gas Operator | Jul 2002 |
| 3712 | R & R Production Company | | Oil Operator | Feb 2000 |
| 3713 | R & R Production, Inc. | | Oil & Gas Operator | Feb 1990 |
| 3714 | R A Nobile | | Oil & Gas Operator | Nov 1989 |
| 3715 | R C Henderson Jr | | Oil Operator | Dec 1990 |
| 3716 | R D V, Inc. | | Oil Operator | May 2004 |
| 3717 | R H Energy Co Inc | | Oil & Gas Operator | Sep 1989 |
| 3718 | R L Kelly, SR. | | Oil Operator | Feb 2009 |
| 3719 | R L Operating Co LLC | | Oil Operator | Aug 2024 |
| 3720 | R L P Gulf States, LLC | | Oil & Gas Operator | Apr 2012 |
| 3721 | R&F Operating Company | Carthage, TX 75633 | Oil Operator | Sep 2026 |
| 3722 | R&R Resources Corporation | Houston, TX 77056 | Oil & Gas Operator | Dec 2015 |
| 3723 | R. & R. Exploration, Inc. | Denton, TX 76202 | Oil Operator | Nov 1993 |
| 3724 | R. A. Bridges | | Oil Operator | Jun 1991 |
| 3725 | R. A. Campbell Company | | Oil & Gas Operator | Nov 1995 |
| 3726 | R. C. Production | | Oil & Gas Operator | Nov 2024 |
| 3727 | R. D. Briscoe, Inc. | | Oil & Gas Operator | Nov 2024 |
| 3728 | R. E. Markham | | Oil & Gas Operator | Mar 1995 |
| 3729 | R. E. Markham Et Al | | Gas Operator | Jun 1996 |
| 3730 | R. H. Davis | | Oil Operator | Apr 2001 |
| 3731 | R. J. Davenport | | Oil Operator | May 1985 |
| 3732 | R. L. Burns Corp. | | Oil & Gas Operator | Feb 1982 |
| 3733 | R. L. Davis | | Oil Operator | Dec 2024 |
| 3734 | R. L. Dempsey | | Oil Operator | Jun 1985 |
| 3735 | R. M. Hobbs | | Oil Operator | Sep 2000 |
| 3736 | R. Pannell Oil Company | Kilgore, TX 75663 | Oil Operator | Jan 2025 |
| 3737 | R. V. Drummond, Et Al | | Oil Operator | Nov 1999 |
| 3738 | R. W. Ellington, Jr. | | Gas Operator | May 1985 |
| 3739 | R. W. Tyson Producing Co. Inc. | | Oil & Gas Operator | Dec 2024 |
| 3740 | R.A. Campbell & Dale Expl | | Oil Operator | Nov 1995 |
| 3741 | R.C.Bertolet & Serio Expl Co | | Oil & Gas Operator | Nov 1992 |
| 3742 | R.Chisum, Jr. & L. Shepherd | | Oil & Gas Operator | Nov 2001 |
| 3743 | R.E. McDowell & Dave Gammill | | Oil Operator | May 1978 |
| 3744 | R/C Holdings, Inc. | | Oil & Gas Operator | Dec 1991 |
| 3745 | R360 Environmental Solutions Of La, LLC | | Oil Operator | Jan 2025 |
| 3746 | Rabalais Oil And Gas, Inc. | | Oil & Gas Operator | Sep 2023 |
| 3747 | Rabb Contracting Company, L.L.C. | | Oil Operator | Nov 2024 |
| 3748 | Rabb Resources, Limited | | Oil Operator | Dec 2002 |
| 3749 | Rabun Resources | | Gas Operator | Jan 2025 |
| 3750 | Rabwin Oil & Gas, Inc. | | Oil & Gas Operator | Nov 1991 |
| 3751 | Radco Energy LLC | | Oil Operator | Jan 2025 |
| 3752 | Radiant Oil & Gas Operating Company Inc. | | Oil & Gas Operator | Aug 2015 |
| 3753 | Radke Oil Co., Inc. | | Oil Operator | May 2001 |
| 3754 | Radzewicz & Assoc-R.C.Bertolet | | Oil Operator | Oct 1985 |
| 3755 | Radzewicz Operating Corporation | | Oil & Gas Operator | Oct 2017 |
| 3756 | Ralph L. Leaderbrand | | Oil & Gas Operator | Dec 1996 |
| 3757 | Ram Energy LLC (Ok) | | Oil & Gas Operator | Feb 2018 |
| 3758 | Ram Management Company, Inc. | | Oil & Gas Operator | Sep 1984 |
| 3759 | Ram Operating Company, Inc. | Houston, TX 77002 | Oil & Gas Operator | Sep 2012 |
| 3760 | Ramco Exploration, Inc. | | Oil & Gas Operator | Feb 1998 |
| 3761 | Ramco Oil & Gas Inc | Midland, TX 79701 | Oil & Gas Operator | Nov 2006 |
| 3762 | Ramco Operating Company | Tulsa, OK 74135 | Oil & Gas Operator | Jan 1998 |
| 3763 | Ramco, Inc. | | Oil & Gas Operator | May 1992 |
| 3764 | Ramrod Prod. Co., Inc. | | Oil Operator | Feb 2024 |
| 3765 | Randy Wilson | | Oil Operator | Dec 2020 |
| 3766 | Range Louisiana Operating, LLC | | Oil & Gas Operator | Aug 2020 |
| 3767 | Range Production Company | Fort Worth, TX 76102 | Oil & Gas Operator | Sep 2021 |
| 3768 | Ranger Holdings Co | | Oil & Gas Operator | Jul 1993 |
| 3769 | Ranger Investments, Inc. | Longview, TX 75605 | Oil & Gas Operator | Oct 2006 |
| 3770 | Ranger Oil Company | Canada, 00100 | Oil & Gas Operator | Sep 2001 |
| 3771 | Ranger, Inc. | | Oil & Gas Operator | Dec 1986 |
| 3772 | Ransom Horne,Jr. | | Oil & Gas Operator | Dec 1991 |
| 3773 | Rapiere Resources Company | | Oil & Gas Operator | Aug 2024 |
| 3774 | Raptor Resources, Inc. | Austin, TX 78701 | Oil & Gas Operator | Sep 2026 |
| 3775 | Rauch, Shaw & Laird, Inc. | | Oil & Gas Operator | Mar 1995 |
| 3776 | Rauch-Shaw Assoc. Inc. & Laird | | Oil & Gas Operator | Mar 1991 |
| 3777 | Ray Conner | | Oil & Gas Operator | Apr 2002 |
| 3778 | Ray Energy, LLC | | Oil Operator | Jan 2025 |
| 3779 | Ray Estis | | Oil Operator | Dec 2024 |
| 3780 | Ray Oil Company | Dallas, TX 75370 | Oil Operator | Dec 1989 |
| 3781 | Raybo, Inc. | | Oil Operator | Dec 1990 |
| 3782 | Rayford Exploration | | Oil Operator | Feb 1984 |
| 3783 | Rayville Resources, Inc. | | Oil & Gas Operator | Aug 1991 |
| 3784 | RBD-Shelby Agency | Dallas, TX 75283 | Oil & Gas Operator | Dec 1993 |
| 3785 | Rbi, Inc. | | Oil Operator | Dec 1984 |
| 3786 | RCV Investments, LLC | | Oil & Gas Operator | Jan 2025 |
| 3787 | RDT Properties, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | Oct 2012 |
| 3788 | Reagan Exploration Company Inc | | Oil & Gas Operator | Nov 1998 |
| 3789 | Realco Oil & Gas, Inc. | | Oil & Gas Operator | Sep 2007 |
| 3790 | Reb Petroleum Company | Sugar Land, TX 77478 | Oil & Gas Operator | Sep 2026 |
| 3791 | Rebel Drilling Co. Inc. | | Oil & Gas Operator | Oct 1995 |
| 3792 | Rebel Enterprises, Inc. | | Oil Operator | Dec 1991 |
| 3793 | Rebel Land And Exploration Inc | | Oil & Gas Operator | Aug 1989 |
| 3794 | Rebel Oil Company | Keaton, KY 41226 | Oil & Gas Operator | Jan 2025 |
| 3795 | Rebel Oil Of North Louisiana, LLC | | Oil & Gas Operator | Dec 2007 |
| 3796 | Rebel Production Company | Kilgore, TX 75663 | Oil Operator | Sep 2026 |
| 3797 | Recon Operating Inc | | Oil & Gas Operator | Jun 1991 |
| 3798 | Red River Oil & Gas Inc. | | Oil & Gas Operator | May 2012 |
| 3799 | Red Rock Energy Group Inc | | Oil & Gas Operator | Dec 2024 |
| 3800 | Red Rock Production L.L.C. | | Oil Operator | Jan 2025 |