| 3901 | Rozel Operating Company | | Oil & Gas Operator | Oct 2014 |
| 3902 | RPS Energy, Inc. | | Oil & Gas Operator | Jul 2020 |
| 3903 | Rse, Inc. | Houston, TX 77077 | Oil & Gas Operator | Sep 2000 |
| 3904 | Ruby Breaux Gotreaux | | Oil Operator | Mar 1981 |
| 3905 | Rudman Resources, Inc. | | Oil Operator | Jul 1981 |
| 3906 | Rusk Co. Well Service Co., Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Apr 2024 |
| 3907 | Rusk Energy Management, LLC | Houston, TX 77002 | Oil & Gas Operator | Feb 2008 |
| 3908 | Ruskin H Meyer Et Al | | Oil Operator | Sep 1987 |
| 3909 | Russell A. Flowers | | Oil Operator | May 1995 |
| 3910 | Russell Resources, Inc. | | Oil & Gas Operator | Dec 1998 |
| 3911 | Rutherford Oil Corporation | Houston, TX 77046 | Oil & Gas Operator | Jun 2019 |
| 3912 | Rvo Petroleum Co. | | Oil & Gas Operator | Feb 1982 |
| 3913 | Ryca Energy Partners LLC | | Oil Operator | Dec 2023 |
| 3914 | Ryca Energy, LLC | | Oil & Gas Operator | Mar 2015 |
| 3915 | S & J Operating Company | Wichita Falls, TX 76301 | Oil & Gas Operator | Mar 2015 |
| 3916 | S & S Oil Company | Electra, TX 76360 | Oil & Gas Operator | Apr 2024 |
| 3917 | S & S Operating Company, Inc. | Winnie, TX 77665 | Oil & Gas Operator | Apr 2024 |
| 3918 | S S M Partnership | | Oil & Gas Operator | Jul 1992 |
| 3919 | S&B Petroleum Corporation | | Oil & Gas Operator | Jun 1994 |
| 3920 | S&S Williams Inc | | Oil Operator | May 2004 |
| 3921 | S. G. Myers, Jr. | | Oil & Gas Operator | May 2005 |
| 3922 | S. G. Myers, Jr. Et Al | | Oil & Gas Operator | Jul 1991 |
| 3923 | S. Parish Oil Company, Inc. | | Oil & Gas Operator | Dec 1997 |
| 3924 | S. S. Tatum | | Oil Operator | Aug 1999 |
| 3925 | S. W. Ray, Et Al | | Oil Operator | Apr 2003 |
| 3926 | S.H. Loe Oil Corp. | | Oil & Gas Operator | Jan 2024 |
| 3927 | S2 Energy 1, LP | | Oil & Gas Operator | Nov 2012 |
| 3928 | S2 Energy Operating LLC | | Oil & Gas Operator | Nov 2023 |
| 3929 | Saba Energy Of Texas Inc | Houston, TX 77042 | Oil & Gas Operator | Jul 2007 |
| 3930 | Sabine Corporation | Oklahoma City, OK 73116 | Oil & Gas Operator | Jul 1996 |
| 3931 | Sabine Oil & Gas Corporation | Houston, TX 77002 | Oil & Gas Operator | Apr 2024 |
| 3932 | Sabine Oil & Gas LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2017 |
| 3933 | Sabine Pipe & Supply Co. | Kilgore, TX 75663 | Oil & Gas Operator | Sep 2004 |
| 3934 | Sabine Pipe, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Apr 2024 |
| 3935 | Sable Minerals, Inc. | | Oil & Gas Operator | Nov 1993 |
| 3936 | Sabre Operating, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Apr 2024 |
| 3937 | Sackett Oil Company | | Oil & Gas Operator | Sep 1995 |
| 3938 | Sage Energy Company | San Antonio, TX 78215 | Oil & Gas Operator | Apr 2024 |
| 3939 | Sahara Gas & Exploration, Inc. | | Gas Operator | Mar 2002 |
| 3940 | Saline Injection Systems Co. | | Oil Operator | Dec 2023 |
| 3941 | Sally Oil Company | | Oil Operator | Sep 2016 |
| 3942 | Sam Aertker | | Oil Operator | Jul 1992 |
| 3943 | Sam Jones & Assoc Prod Div Inc | | Oil & Gas Operator | Feb 1999 |
| 3944 | Sam Myers | | Oil & Gas Operator | Nov 1988 |
| 3945 | Sam R. Brown | | Oil Operator | Mar 1987 |
| 3946 | Sam Spears, Jr. | | Oil & Gas Operator | Sep 1998 |
| 3947 | Samantha Petroleum Corp. | | Oil & Gas Operator | Apr 1987 |
| 3948 | Samedan Oil Corp. Et Al | | Oil & Gas Operator | Jan 1989 |
| 3949 | Samedan Oil Corporation | Houston, TX 77067 | Oil & Gas Operator | Dec 2019 |
| 3950 | Sammy D. Thrash | | Oil & Gas Operator | May 2012 |
| 3951 | Sammy D. Thrash, LLC | | Oil & Gas Operator | May 2019 |
| 3952 | Sample Exploration | | Oil & Gas Operator | Jul 2002 |
| 3953 | Samson Contour Energy E&P, LLC | Tulsa, OK 74103 | Oil & Gas Operator | Sep 2017 |
| 3954 | Samson Exploration LLC | Tulsa, OK 74101 | Oil & Gas Operator | Feb 2024 |
| 3955 | Samson Hydrocarbons Company | Tulsa, OK 74103 | Oil & Gas Operator | Nov 2016 |
| 3956 | Samson Kelley Operating Co., LTD. | | Oil & Gas Operator | Feb 2004 |
| 3957 | Samson Resources Company | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2024 |
| 3958 | Samuel Gary Jr. And Assoc., Inc. | | Oil & Gas Operator | Mar 2023 |
| 3959 | San Miguel Oil & Gas, Inc. | | Oil & Gas Operator | Jan 1993 |
| 3960 | Sananco Energy Corp | Naples, FL 33941 | Oil & Gas Operator | Jul 2013 |
| 3961 | Sanare Energy Partners, LLC | | Oil & Gas Operator | Jan 2024 |
| 3962 | Sanchez Oil & Gas Corporation | Houston, TX 77056 | Oil & Gas Operator | Apr 2024 |
| 3963 | Sanchez-O'Brien Oil & Gas Corp | Houston, TX 77057 | Oil & Gas Operator | May 1998 |
| 3964 | Sand Hill, LTD. | | Gas Operator | Dec 2023 |
| 3965 | Sandalwood Exploration, L.P. | Houston, TX 77056 | Oil & Gas Operator | Apr 2024 |
| 3966 | Sandefer & Andress, Inc. | | Oil & Gas Operator | Apr 1982 |
| 3967 | Sandefer Petroleum Co. | | Oil & Gas Operator | Apr 1994 |
| 3968 | Sandel Energy, Inc. | Huntsville, TX 77342 | Oil & Gas Operator | Apr 2004 |
| 3969 | Sandhill Production Inc | Shongaloo, LA 71072 | Oil & Gas Operator | Dec 2019 |
| 3970 | Sandpoint Energy Partners LLC | | Oil Operator | Jan 2024 |
| 3971 | Sandridge Exploration And Production LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Apr 2024 |
| 3972 | Sandridge Onshore, LLC | Houston, TX 77010 | Oil & Gas Operator | Jun 2014 |
| 3973 | Santa Fe Braun, Inc | Dallas, TX 75240-6620 | Oil & Gas Operator | Mar 1995 |
| 3974 | Santa Fe Energy Company | Midland, TX 79701 | Oil & Gas Operator | Dec 2015 |
| 3975 | Santa Fe Energy Operg Parts LP | | Oil & Gas Operator | Nov 1993 |
| 3976 | Santa Fe Energy Resources, Inc. | Houston, TX 77024 | Oil & Gas Operator | Mar 2008 |
| 3977 | Santa Fe Minerals, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Sep 2013 |
| 3978 | Santa Fe Snyder Corporation | Houston, TX 77024 | Oil & Gas Operator | Oct 2000 |
| 3979 | Santa Fe-Andover Oil Co | Tulsa, OK 74172 | Oil & Gas Operator | Sep 2000 |
| 3980 | Santana Exploration, Inc. | | Oil & Gas Operator | Dec 1985 |
| 3981 | Sante Fe Minerals | | Oil & Gas Operator | Dec 1987 |
| 3982 | Santo Operating LLC | Houston, TX 77002 | Oil & Gas Operator | Apr 2024 |
| 3983 | Santos USA Corp. | Houston, TX 77042 | Oil & Gas Operator | Dec 2008 |
| 3984 | Sapient Energy Corp | Oklahoma City, OK 73154 | Oil & Gas Operator | Jan 2002 |
| 3985 | Sasha Petroleum, Inc | | Oil Operator | Jan 1986 |
| 3986 | Savant Energy Corporation | | Oil & Gas Operator | Mar 2012 |
| 3987 | Sawyer Drilling & Service Inc. | | Oil & Gas Operator | Oct 2004 |
| 3988 | Sawyer Energy, Inc. | | Oil & Gas Operator | May 1997 |
| 3989 | Saxon Oil & Gas Expl., Inc. | | Gas Operator | Dec 1989 |
| 3990 | Saxon Oil Company | Dallas, TX 75204 | Oil & Gas Operator | Oct 2009 |
| 3991 | Saye Petroleum, Inc. | | Oil & Gas Operator | Apr 1995 |
| 3992 | Sayes Drilling Inc. | | Oil Operator | May 1987 |
| 3993 | SBM Operating Company Inc. | | Gas Operator | Sep 1997 |
| 3994 | Scana Exploration Company | Houston, TX 77002 | Oil & Gas Operator | Dec 1999 |
| 3995 | Scana Petroleum Resources Inc | Houston, TX 77002 | Oil & Gas Operator | Jun 2013 |
| 3996 | Sceptre Resources Inc | | Oil & Gas Operator | Dec 2007 |
| 3997 | Schmid Properties Inc | Hico, TX 76457 | Oil & Gas Operator | Apr 2024 |
| 3998 | Scogin Exploration Inc | | Oil & Gas Operator | Dec 1999 |
| 3999 | Scorpion Oil & Gas, LLC | Houston, TX 77036 | Oil & Gas Operator | Oct 2023 |
| 4000 | Scott W. Brumley | | Oil Operator | Apr 2011 |