| 9901 | Exl Petroleum, LP | Midland, TX 79705 | Oil & Gas Operator | Jun 2017 |
| 9902 | Exlco, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 2025 |
| 9903 | Exley Oil & Gas Corp | Lemont, PA 16851-0425 | Oil & Gas Operator | Dec 2019 |
| 9904 | Exmoor Oil & Minerals Corp. | Dallas, TX 75225 | Oil & Gas Operator | May 1994 |
| 9905 | Exodus Energy, Inc. | Huntington Beach, CA 92615 | Oil & Gas Operator | Jul 2018 |
| 9906 | Exodus Gas & Oil LLC | Houston, TX 77002 | Oil & Gas Operator | Jan 2024 |
| 9907 | Exok Inc | Oklahoma City, OK 73116 | Oil & Gas Operator | Aug 2025 |
| 9908 | Exoko Operating Company Inc | Tulsa, OK 74170-0246 | Oil & Gas Operator | Jan 2006 |
| 9909 | Exorare Energy, Inc. | Dallas, TX 75218 | Oil & Gas Operator | Dec 2025 |
| 9910 | Exoro Energy, L.L.C. | | Oil & Gas Operator | Jun 2021 |
| 9911 | Exotic Oil & Gas LLC | Indiana, PA 15701-3634 | Oil & Gas Operator | Dec 2024 |
| 9912 | Exp, Inc. | Dallas, TX 75244 | Oil & Gas Operator | May 2003 |
| 9913 | Expand Oper LLC | Morgantown, WV 26508 | Oil & Gas Operator | Sep 2025 |
| 9914 | Expanding Energy Corporation | New Braunfels, TX 78132 | Oil & Gas Operator | Mar 2008 |
| 9915 | Expando Production Co. | | Oil & Gas Operator | Oct 1988 |
| 9916 | Expert Oil & Gas, L.L.C. | | Oil & Gas Operator | Nov 2024 |
| 9917 | Explo Oil, Inc. | Dallas, TX 75251 | Oil & Gas Operator | Dec 2025 |
| 9918 | Exploration Associates | Oklahoma City, OK 73102-8606 | Oil & Gas Operator | Mar 2015 |
| 9919 | Exploration Associates II LLC | Oklahoma City, OK 73102-8815 | Oil & Gas Operator | Jan 2013 |
| 9920 | Exploration Company, The | San Antonio, TX 78258 | Oil & Gas Operator | Jun 2010 |
| 9921 | Exploration Energy Inc | Cortland, OH 44410 | Oil & Gas Operator | Dec 2009 |
| 9922 | Exploration Professionals Inc | Chelsea, OK 74016-0066 | Oil Operator | Dec 2023 |
| 9923 | Exploration Techniques Inc. | Houston, TX 77027 | Oil & Gas Operator | Dec 2025 |
| 9924 | Exploration Technologies Inc | Crescent, OK 73028-0546 | Oil & Gas Operator | Mar 2015 |
| 9925 | Explore Energy Corp. | Westerville, OH 43086 | Oil & Gas Operator | Dec 2016 |
| 9926 | Export Petroleum Corporation | Fort Worth, TX 76147 | Oil & Gas Operator | Dec 2025 |
| 9927 | Express Energy Group, LLC | Atlanta, TX 75551 | Oil Operator | Dec 2025 |
| 9928 | Express Oil & Gas LLC | Oklahoma City, OK 73142-3017 | Oil & Gas Operator | Sep 2025 |
| 9929 | Express Oil And Gas | La Grange, TX 78945 | Oil & Gas Operator | Dec 2025 |
| 9930 | Express Oil Co. | Hallettsville, TX 77964 | Oil & Gas Operator | Dec 2025 |
| 9931 | Expro Engineering, Inc. | Fort Worth, TX 76179 | Oil & Gas Operator | Dec 2025 |
| 9932 | Extech Operating, LLC | Fort Worth, TX 76147 | Oil & Gas Operator | Dec 2025 |
| 9933 | Extenergy, L.P. | The Woodlands, TX 77380 | Oil & Gas Operator | Dec 2014 |
| 9934 | Extex Operating Company | Houston, TX 77057 | Oil & Gas Operator | Dec 2025 |
| 9935 | Extraction Oil & Gas LLC | Denver, CO 80202 | Oil & Gas Operator | Sep 2025 |
| 9936 | Extreme Energy Co | | Oil & Gas Operator | Jun 2025 |
| 9937 | Exxcel Production Company | Pampa, TX 79066 | Oil & Gas Operator | Dec 2025 |
| 9938 | Exxo Resources Co | Dana, KY 41615 | Oil & Gas Operator | Dec 2023 |
| 9939 | Exxon Corp. - Midland | Houston, TX 77210 | Gas Operator | Jul 1997 |
| 9940 | Exxon Corporatio | | Oil & Gas Operator | Dec 1995 |
| 9941 | Exxon Corporation | Houston, TX 77210 | Oil & Gas Operator | Jun 2024 |
| 9942 | Exxon Corporation -La | | Oil & Gas Operator | Sep 1989 |
| 9943 | Exxon Corporation -TX | | Oil & Gas Operator | Jan 1982 |
| 9944 | Exxon Mobil Corporation | Spring, TX 77389 | Oil & Gas Operator | Dec 2025 |
| 9945 | Exxonmobil Alaska Production Inc. | | Oil & Gas Operator | Oct 2021 |
| 9946 | Exxonmobil Oil Corp | Houston, TX 77210 | Oil & Gas Operator | Aug 2025 |
| 9947 | Exzena Oil Corp. | Tyler, TX 75713 | Oil & Gas Operator | Dec 2025 |
| 9948 | Eylau Oil Inc. | Atlanta, TX 75551 | Oil & Gas Operator | Oct 2021 |
| 9949 | Eyler Corporation | | Oil & Gas Operator | Nov 2012 |
| 9950 | Eyler Dean E | Cleveland, OK 74020 | Oil & Gas Operator | Aug 2025 |
| 9951 | Eyler Nelson E | | Oil Operator | Nov 1998 |
| 9952 | Eyster Oil Company LLC | Magnolia, OH 44643 | Oil & Gas Operator | Dec 2024 |
| 9953 | F & F Drilling Company | | Oil Operator | Apr 1991 |
| 9954 | F & G Exploration, LLC | Ada, MI 49301 | Gas Operator | Dec 2024 |
| 9955 | F & G Management LLC | Claremore, OK 74019-0392 | Oil Operator | Jul 2025 |
| 9956 | F & H Production | | Oil & Gas Operator | Apr 2014 |
| 9957 | F & H Production Service | | Oil & Gas Operator | Apr 1987 |
| 9958 | F & J Oil Company, L.L.C. | | Oil Operator | Aug 2025 |
| 9959 | F & J Oil LLC | Newcastle, WY 82701 | Oil & Gas Operator | Oct 2015 |
| 9960 | F & J Petroleum Company | Milano, TX 76556 | Oil Operator | Dec 2025 |
| 9961 | F & L Petroleum, LLC | | Oil & Gas Operator | Apr 2019 |
| 9962 | F & M Oil & Gas Co | Midland, TX 79702 | Oil & Gas Operator | Feb 2000 |
| 9963 | F & M Oil Compan | | Oil & Gas Operator | Feb 1993 |
| 9964 | F & M Oil Company Inc | Pettus, TX 78146 | Oil & Gas Operator | Dec 2025 |
| 9965 | F & R Oil Co. | Dallas, TX 75205 | Oil & Gas Operator | May 2005 |
| 9966 | F & S Energy LLC | Crescent, OK 73028 | Oil & Gas Operator | Sep 2025 |
| 9967 | F & S Oil | | Oil Operator | Dec 2021 |
| 9968 | F & S Petroleum, L.L.C. | Lebanon, MO 65536 | Oil & Gas Operator | Dec 2025 |
| 9969 | F B Operating, Inc. | Montague, TX 76251 | Oil & Gas Operator | Aug 2003 |
| 9970 | F C D Oil Corporation | Oklahoma City, OK 73112 | Oil & Gas Operator | Feb 1995 |
| 9971 | F D & Jack Oil Company | Muskogee, OK 74402-1444 | Oil & Gas Operator | May 2015 |
| 9972 | F Davis Oil & Gas LLC | Cleveland, OK 74020 | Oil Operator | Aug 2025 |
| 9973 | F E W Oil Compan | | Oil Operator | Jul 1993 |
| 9974 | F H Walsh Jr Operating Co Inc | | Oil & Gas Operator | Jul 1995 |
| 9975 | F Howard Walsh Jr | | Oil & Gas Operator | Aug 1992 |
| 9976 | F L Energy | Holladay, UT 84117-4972 | Oil & Gas Operator | Feb 2007 |
| 9977 | F M C Operating LLC | Okmulgee, OK 74447 | Oil & Gas Operator | Feb 2025 |
| 9978 | F M Hoel | | Oil & Gas Operator | Dec 2000 |
| 9979 | F O & G LLC | Pawhuska, OK 74056-5075 | Oil Operator | Apr 2022 |
| 9980 | F P C Disposal Inc | El Reno, OK 73036-5501 | Oil Operator | Apr 2003 |
| 9981 | F P I Antrim One Inc | | Gas Operator | Nov 1991 |
| 9982 | F R Etchen, Jr | | Oil & Gas Operator | Sep 1985 |
| 9983 | F W Rabalais, Inc. | | Oil & Gas Operator | Dec 2014 |
| 9984 | F Y B Investments, Inc. | Midland, TX 79711 | Oil & Gas Operator | Sep 1995 |
| 9985 | F&H Operating Company LLC | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 2025 |
| 9986 | F-B Oil, LP | Decatur, TX 76234 | Oil Operator | Aug 2015 |
| 9987 | F-W Oil Interests, Inc. | Houston, TX 77024 | Oil & Gas Operator | Dec 2006 |
| 9988 | F. B. R. Production Company | Pampa, TX 79066 | Oil & Gas Operator | May 2000 |
| 9989 | F. E. Hargraves | | Oil Operator | Mar 1983 |
| 9990 | F. H. B. Company | Holliday, TX 76366 | Oil & Gas Operator | Dec 2025 |
| 9991 | F.A.S. Environmental Services, L.L.C. | | Oil Operator | Jan 2025 |
| 9992 | F.D. Looman | Sedan, KS 67361 | Oil Operator | Jun 2008 |
| 9993 | F.E.Hargraves &Sons DRL.Co.Inc. | | Oil & Gas Operator | Mar 1992 |
| 9994 | F.E.W. Oil Co. | Oceanside, CA 92058 | Oil Operator | Oct 2012 |
| 9995 | F.G. Holl Co., LLC | Wichita, KS 67206 | Oil & Gas Operator | Jun 2025 |
| 9996 | F.I.G. Energy, LLC | Livingston, TX 77399 | Oil & Gas Operator | Dec 2025 |
| 9997 | F.M.C. Operating, Inc. | Austin, TX 78750 | Oil & Gas Operator | Oct 1996 |
| 9998 | F.S.M. Oil Co. | | Oil Operator | Aug 1979 |
| 9999 | Fabco | Big Lake, TX 76932 | Oil & Gas Operator | Dec 2025 |
| 10000 | Fackrell & Associates LLC | Ardmore, OK 73402-1452 | Oil Operator | Aug 2025 |