| 10001 | Express Oil & Gas LLC | Oklahoma City, OK 73142-3017 | Oil & Gas Operator | Nov 2025 |
| 10002 | Express Oil And Gas | La Grange, TX 78945 | Oil & Gas Operator | Feb 2026 |
| 10003 | Express Oil Co. | Hallettsville, TX 77964 | Oil & Gas Operator | Feb 2026 |
| 10004 | Expro Engineering, Inc. | Fort Worth, TX 76179 | Oil & Gas Operator | Feb 2026 |
| 10005 | Extech Operating, LLC | Fort Worth, TX 76147 | Oil & Gas Operator | Feb 2026 |
| 10006 | Extenergy, L.P. | The Woodlands, TX 77380 | Oil & Gas Operator | Dec 2014 |
| 10007 | Extex Operating Company | Houston, TX 77057 | Oil & Gas Operator | Feb 2026 |
| 10008 | Extraction Oil & Gas LLC | Denver, CO 80202 | Oil & Gas Operator | Oct 2025 |
| 10009 | Extreme Energy Co | | Oil & Gas Operator | Sep 2025 |
| 10010 | Exxcel Production Company | Pampa, TX 79066 | Oil & Gas Operator | Feb 2026 |
| 10011 | Exxo Resources Co | Dana, KY 41615 | Oil & Gas Operator | Dec 2023 |
| 10012 | Exxon Corp. - Midland | Houston, TX 77210 | Gas Operator | Jul 1997 |
| 10013 | Exxon Corporatio | | Oil & Gas Operator | Dec 1995 |
| 10014 | Exxon Corporation | Houston, TX 77210 | Oil & Gas Operator | Feb 2026 |
| 10015 | Exxon Corporation -La | | Oil & Gas Operator | Sep 1989 |
| 10016 | Exxon Corporation -TX | | Oil & Gas Operator | Jan 1982 |
| 10017 | Exxon Mobil Corporation | Spring, TX 77389 | Oil & Gas Operator | Feb 2026 |
| 10018 | Exxonmobil Alaska Production Inc. | | Oil & Gas Operator | Oct 2021 |
| 10019 | Exxonmobil Oil Corp | Houston, TX 77210 | Oil & Gas Operator | Oct 2025 |
| 10020 | Exzena Oil Corp. | Tyler, TX 75713 | Oil & Gas Operator | Feb 2026 |
| 10021 | Eylau Oil Inc. | Atlanta, TX 75551 | Oil & Gas Operator | Oct 2021 |
| 10022 | Eyler Corporation | | Oil & Gas Operator | Nov 2012 |
| 10023 | Eyler Dean E | Cleveland, OK 74020 | Oil & Gas Operator | Oct 2025 |
| 10024 | Eyler Nelson E | | Oil Operator | Nov 1998 |
| 10025 | Eyster Oil Company LLC | Magnolia, OH 44643 | Oil & Gas Operator | Dec 2024 |
| 10026 | F & F Drilling Company | | Oil Operator | Apr 1991 |
| 10027 | F & G Exploration, LLC | Ada, MI 49301 | Gas Operator | Dec 2024 |
| 10028 | F & G Management LLC | Claremore, OK 74019-0392 | Oil Operator | Oct 2025 |
| 10029 | F & H Production | | Oil & Gas Operator | Apr 2014 |
| 10030 | F & H Production Service | | Oil & Gas Operator | Apr 1987 |
| 10031 | F & J Oil Company, L.L.C. | | Oil Operator | Nov 2025 |
| 10032 | F & J Oil LLC | Newcastle, WY 82701 | Oil & Gas Operator | Oct 2015 |
| 10033 | F & J Petroleum Company | Milano, TX 76556 | Oil Operator | Feb 2026 |
| 10034 | F & L Petroleum, LLC | | Oil & Gas Operator | Apr 2019 |
| 10035 | F & M Oil & Gas Co | Midland, TX 79702 | Oil & Gas Operator | Feb 2000 |
| 10036 | F & M Oil Compan | | Oil & Gas Operator | Feb 1993 |
| 10037 | F & M Oil Company Inc | Pettus, TX 78146 | Oil & Gas Operator | Feb 2026 |
| 10038 | F & R Oil Co. | Dallas, TX 75205 | Oil & Gas Operator | May 2005 |
| 10039 | F & S Energy LLC | Crescent, OK 73028 | Oil & Gas Operator | Nov 2025 |
| 10040 | F & S Oil | | Oil Operator | Dec 2021 |
| 10041 | F & S Petroleum, L.L.C. | Lebanon, MO 65536 | Oil & Gas Operator | Feb 2026 |
| 10042 | F And S Deni LLC | | Oil Operator | Dec 2025 |
| 10043 | F B Operating, Inc. | Montague, TX 76251 | Oil & Gas Operator | Aug 2003 |
| 10044 | F C D Oil Corporation | Oklahoma City, OK 73112 | Oil & Gas Operator | Feb 1995 |
| 10045 | F D & Jack Oil Company | Muskogee, OK 74402-1444 | Oil & Gas Operator | May 2015 |
| 10046 | F Davis Oil & Gas LLC | Cleveland, OK 74020 | Oil Operator | Oct 2025 |
| 10047 | F E W Oil Compan | | Oil Operator | Jul 1993 |
| 10048 | F H Walsh Jr Operating Co Inc | | Oil & Gas Operator | Jul 1995 |
| 10049 | F Howard Walsh Jr | | Oil & Gas Operator | Aug 1992 |
| 10050 | F L Energy | Holladay, UT 84117-4972 | Oil & Gas Operator | Feb 2007 |
| 10051 | F M C Operating LLC | Okmulgee, OK 74447 | Oil & Gas Operator | Feb 2025 |
| 10052 | F M Hoel | | Oil & Gas Operator | Dec 2000 |
| 10053 | F O & G LLC | Pawhuska, OK 74056-5075 | Oil Operator | Apr 2022 |
| 10054 | F P C Disposal Inc | El Reno, OK 73036-5501 | Oil Operator | Apr 2003 |
| 10055 | F P I Antrim One Inc | | Gas Operator | Nov 1991 |
| 10056 | F R Etchen, Jr | | Oil & Gas Operator | Sep 1985 |
| 10057 | F W Rabalais, Inc. | | Oil & Gas Operator | Dec 2014 |
| 10058 | F Y B Investments, Inc. | Midland, TX 79711 | Oil & Gas Operator | Sep 1995 |
| 10059 | F&H Operating Company LLC | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2026 |
| 10060 | F-B Oil, LP | Decatur, TX 76234 | Oil Operator | Aug 2015 |
| 10061 | F-W Oil Interests, Inc. | Houston, TX 77024 | Oil & Gas Operator | Dec 2006 |
| 10062 | F. B. R. Production Company | Pampa, TX 79066 | Oil & Gas Operator | May 2000 |
| 10063 | F. E. Hargraves | | Oil Operator | Mar 1983 |
| 10064 | F. H. B. Company | Holliday, TX 76366 | Oil & Gas Operator | Feb 2026 |
| 10065 | F.A.S. Environmental Services, L.L.C. | | Oil Operator | Jan 2025 |
| 10066 | F.D. Looman | Sedan, KS 67361 | Oil Operator | Jun 2008 |
| 10067 | F.E.Hargraves &Sons DRL.Co.Inc. | | Oil & Gas Operator | Mar 1992 |
| 10068 | F.E.W. Oil Co. | Oceanside, CA 92058 | Oil Operator | Oct 2012 |
| 10069 | F.G. Holl Co., LLC | Wichita, KS 67206 | Oil & Gas Operator | Sep 2025 |
| 10070 | F.I.G. Energy, LLC | Livingston, TX 77399 | Oil & Gas Operator | Feb 2026 |
| 10071 | F.M.C. Operating, Inc. | Austin, TX 78750 | Oil & Gas Operator | Oct 1996 |
| 10072 | F.S.M. Oil Co. | | Oil Operator | Aug 1979 |
| 10073 | Fabco | Big Lake, TX 76932 | Oil & Gas Operator | Feb 2026 |
| 10074 | Fackrell & Associates LLC | Ardmore, OK 73402-1452 | Oil Operator | Aug 2025 |
| 10075 | Factor, J. S. Pridmore | Spencer, WV 25276-0000 | Gas Operator | Dec 2017 |
| 10076 | Fadely, Dale Leon | Sedan, KS 67361 | Oil & Gas Operator | Dec 2009 |
| 10077 | Fadem Oil Company | Tulsa, OK 74135 | Oil Operator | Jan 1996 |
| 10078 | Fae II Operating LLC | Houston, TX 77079 | Oil & Gas Operator | Nov 2025 |
| 10079 | Fagadau Energy Corporation | Dallas, TX 75206 | Oil & Gas Operator | Apr 2006 |
| 10080 | Fagan Engineering | Shawnee, OK 74801-3021 | Oil & Gas Operator | Oct 1994 |
| 10081 | Fahey Oil & Gas | | Oil & Gas Operator | Jul 2021 |
| 10082 | Fahey, John R | | Oil Operator | Dec 2024 |
| 10083 | Fahrenheit Petroleum Co Inc | | Oil & Gas Operator | Mar 2015 |
| 10084 | Fail W T Inc | | Oil & Gas Operator | Mar 2015 |
| 10085 | Fair Banks Enterprises | Chanute, KS 66720 | Oil Operator | Mar 2013 |
| 10086 | Fair Energies Inc | | Oil Operator | Aug 2025 |
| 10087 | Fair Oil Company | Tyler, TX 75710 | Oil & Gas Operator | Dec 2000 |
| 10088 | Fair Oil, LC | Tyler, TX 75710 | Oil & Gas Operator | Oct 2001 |
| 10089 | Fair Oil, LTD. | Tyler, TX 75710 | Oil & Gas Operator | Feb 2026 |
| 10090 | Fair Operating, Inc. | Boerne, TX 78015 | Oil & Gas Operator | Feb 2026 |
| 10091 | Fair Seas Enterp | | Oil & Gas Operator | Jun 1988 |
| 10092 | Fairchild Explor | | Oil & Gas Operator | Apr 1995 |
| 10093 | Fairchild Oil Corporation | Edmond, OK 73013 | Oil & Gas Operator | Oct 1994 |
| 10094 | Fairchild Well Service Inc | Ponca City, OK 74602-0470 | Oil & Gas Operator | Jun 2006 |
| 10095 | Fairchild, Bob | Kingman, KS 67068 | Oil Operator | Jan 2001 |
| 10096 | Fairfield Energy Corp. | Dallas, TX 75205 | Oil & Gas Operator | Feb 2026 |
| 10097 | Fairfield Oil & Gas Corp | Edmond, OK 73083 | Oil & Gas Operator | Nov 2021 |
| 10098 | Fairman Corp | Du Bois, PA 15801-0288 | Oil & Gas Operator | Dec 2024 |
| 10099 | Fairman Drilling Co | Du Bois, PA 15801-0288 | Oil & Gas Operator | Dec 2002 |
| 10100 | Fairman Oil & Gas Co Inc | Oil City, PA 16301 | Oil & Gas Operator | Dec 1991 |