| 10001 | Exchange Exploration & Production Co. | Dallas, TX 75219 | Oil & Gas Operator | Jan 2025 |
| 10002 | Exchange Oil & Gas Company | | Oil & Gas Operator | Oct 1996 |
| 10003 | Exchange Oil & Gas Corporation | Tulsa, OK 74103 | Oil & Gas Operator | Oct 1987 |
| 10004 | Exco - North Coast Energy Inc | Kittanning, PA 16201 | Oil & Gas Operator | Dec 2018 |
| 10005 | Exco Operating Company, LP | Dallas, TX 75251 | Oil & Gas Operator | Apr 2025 |
| 10006 | Exco Partners Operating PTSHP LP | Dallas, TX 75251 | Oil & Gas Operator | Jan 2009 |
| 10007 | Exco Production Company, LP | Dallas, TX 75251 | Oil & Gas Operator | Dec 2009 |
| 10008 | Exco Resources (Pa), LLC | Dallas, TX 75251-2224 | Oil & Gas Operator | Feb 2025 |
| 10009 | Exco Resources (WV), Inc. | | Oil & Gas Operator | Dec 2020 |
| 10010 | Exco Resources Inc | Dallas, TX 75251 | Oil & Gas Operator | Jan 2025 |
| 10011 | Exco Resources Pa Inc | Warrendale, PA 15086-6501 | Oil & Gas Operator | Dec 2011 |
| 10012 | Exco/Hgi JV Assets, LLC | Dallas, TX 75251 | Oil & Gas Operator | Jun 2014 |
| 10013 | Executive Production, Inc. | Tyler, TX 75713 | Oil & Gas Operator | Apr 2025 |
| 10014 | Executive Properties Inc | Amarillo, TX 79110 | Oil & Gas Operator | Aug 1994 |
| 10015 | Exeter Drilling Company | Denver, CO 80217 | Oil & Gas Operator | Sep 1997 |
| 10016 | Exeter Exploration Co. | | Oil & Gas Operator | Aug 1985 |
| 10017 | Exit Inc | | Oil Operator | Dec 1983 |
| 10018 | Exit Oil & Gas | Flower Mound, TX 75028 | Oil & Gas Operator | Apr 2025 |
| 10019 | Exl Petroleum Operating Inc. | Midland, TX 79705 | Oil & Gas Operator | Feb 2020 |
| 10020 | Exl Petroleum, LP | Midland, TX 79705 | Oil & Gas Operator | Jun 2017 |
| 10021 | Exlco, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Apr 2025 |
| 10022 | Exley Oil & Gas Corp | Lemont, PA 16851-0425 | Oil & Gas Operator | Dec 2019 |
| 10023 | Exmoor Oil & Minerals Corp. | Dallas, TX 75225 | Oil & Gas Operator | May 1994 |
| 10024 | Exodus Energy, Inc. | | Oil & Gas Operator | Jul 2018 |
| 10025 | Exodus Gas & Oil LLC | Houston, TX 77002 | Oil & Gas Operator | Jan 2024 |
| 10026 | Exok, Inc. | Oklahoma City, OK 73116 | Oil & Gas Operator | Jan 2025 |
| 10027 | Exoko Operating Company Inc | Tulsa, OK 74170-0246 | Oil & Gas Operator | Jan 2006 |
| 10028 | Exorare Energy, Inc. | Dallas, TX 75218 | Oil & Gas Operator | Apr 2025 |
| 10029 | Exoro Energy, L.L.C. | | Oil & Gas Operator | Jun 2021 |
| 10030 | Exotic Oil & Gas LLC | Indiana, PA 15701-3634 | Oil & Gas Operator | Dec 2024 |
| 10031 | Exp, Inc. | Dallas, TX 75244 | Oil & Gas Operator | May 2003 |
| 10032 | Expanding Energy Corporation | New Braunfels, TX 78132 | Oil & Gas Operator | Mar 2008 |
| 10033 | Expando Production Co. | | Oil & Gas Operator | Oct 1988 |
| 10034 | Expert Oil & Gas, L.L.C. | | Oil & Gas Operator | Nov 2024 |
| 10035 | Explo Oil, Inc. | Dallas, TX 75251 | Oil & Gas Operator | Apr 2025 |
| 10036 | Exploration Associates | Oklahoma City, OK 73102-8606 | Oil & Gas Operator | Mar 2015 |
| 10037 | Exploration Associates II LLC | Oklahoma City, OK 73102-8815 | Oil & Gas Operator | Jan 2013 |
| 10038 | Exploration Company, The | San Antonio, TX 78258 | Oil & Gas Operator | Jun 2010 |
| 10039 | Exploration Energy Inc | Cortland, OH 44410 | Oil & Gas Operator | Dec 2009 |
| 10040 | Exploration Professionals Inc | Chelsea, OK 74016-0066 | Oil Operator | Dec 2023 |
| 10041 | Exploration Techniques Inc. | Houston, TX 77027 | Oil & Gas Operator | Apr 2025 |
| 10042 | Exploration Technologies Inc | Crescent, OK 73028-0546 | Oil & Gas Operator | Mar 2015 |
| 10043 | Explore Energy Corp. | Westerville, OH 43086 | Oil & Gas Operator | Dec 2016 |
| 10044 | Export Petroleum Corporation | Fort Worth, TX 76147 | Oil & Gas Operator | Apr 2025 |
| 10045 | Express Energy Group, LLC | Atlanta, TX 75551 | Oil Operator | Apr 2025 |
| 10046 | Express Oil & Gas LLC | Oklahoma City, OK 73142 | Oil & Gas Operator | Jan 2025 |
| 10047 | Express Oil And Gas | La Grange, TX 78945 | Oil & Gas Operator | Apr 2025 |
| 10048 | Express Oil Co. | Hallettsville, TX 77964 | Oil & Gas Operator | Apr 2025 |
| 10049 | Expro Engineering, Inc. | Fort Worth, TX 76179 | Oil & Gas Operator | Apr 2025 |
| 10050 | Extech Operating, LLC | Fort Worth, TX 76147 | Oil & Gas Operator | Apr 2025 |
| 10051 | Extenergy, L.P. | The Woodlands, TX 77380 | Oil & Gas Operator | Dec 2014 |
| 10052 | Extex Operating Company | Houston, TX 77057 | Oil & Gas Operator | Apr 2025 |
| 10053 | Extraction Oil & Gas LLC | Denver, CO 80202 | Oil & Gas Operator | Feb 2025 |
| 10054 | Extreme Energy Co | | Oil & Gas Operator | Dec 2024 |
| 10055 | Exxcel Production Company | Pampa, TX 79066 | Oil & Gas Operator | Apr 2025 |
| 10056 | Exxo Resources Co | Dana, KY 41615 | Oil & Gas Operator | Dec 2023 |
| 10057 | Exxon Corp. - Midland | Houston, TX 77210 | Gas Operator | Jul 1997 |
| 10058 | Exxon Corporatio | | Oil & Gas Operator | Dec 1995 |
| 10059 | Exxon Corporation | Houston, TX 77210 | Oil & Gas Operator | Jun 2024 |
| 10060 | Exxon Corporation -La | | Oil & Gas Operator | Sep 1989 |
| 10061 | Exxon Corporation -TX | | Oil & Gas Operator | Jan 1982 |
| 10062 | Exxon Mobil Corporation | Spring, TX 77389 | Oil & Gas Operator | Apr 2025 |
| 10063 | Exxonmobil Alaska Production Inc. | | Oil & Gas Operator | Oct 2021 |
| 10064 | Exxonmobil Oil Corp | Houston, TX 77210 | Oil & Gas Operator | Feb 2025 |
| 10065 | Exzena Oil Corp. | Tyler, TX 75713 | Oil & Gas Operator | Apr 2025 |
| 10066 | Eylau Oil Inc. | Atlanta, TX 75551 | Oil & Gas Operator | Oct 2021 |
| 10067 | Eyler Corporation | | Oil & Gas Operator | Nov 2012 |
| 10068 | Eyler Dean E | Cleveland, OK 74020 | Oil & Gas Operator | Jan 2025 |
| 10069 | Eyler Nelson E | | Oil Operator | Nov 1998 |
| 10070 | Eyster Oil Company LLC | Magnolia, OH 44643 | Oil & Gas Operator | Dec 2024 |
| 10071 | F & F Drilling Company | | Oil Operator | Apr 1991 |
| 10072 | F & G Exploration, LLC | Ada, MI 49301 | Gas Operator | Dec 2022 |
| 10073 | F & G Management LLC | Claremore, OK 74019-0392 | Oil Operator | Jan 2025 |
| 10074 | F & H Production | | Oil & Gas Operator | Apr 2014 |
| 10075 | F & H Production Service | | Oil & Gas Operator | Apr 1987 |
| 10076 | F & J Oil Co LLC | Pawauska, OK 74056 | Oil Operator | Feb 2025 |
| 10077 | F & J Oil LLC | Newcastle, WY 82701 | Oil & Gas Operator | Oct 2015 |
| 10078 | F & J Petroleum Company | Milano, TX 76556 | Oil Operator | Apr 2025 |
| 10079 | F & L Petroleum, LLC | | Oil & Gas Operator | Apr 2019 |
| 10080 | F & M Oil & Gas Co | Midland, TX 79702 | Oil & Gas Operator | Feb 2000 |
| 10081 | F & M Oil Compan | | Oil & Gas Operator | Feb 1993 |
| 10082 | F & M Oil Company Inc | Pettus, TX 78146 | Oil & Gas Operator | Apr 2025 |
| 10083 | F & R Oil Co. | Dallas, TX 75205 | Oil & Gas Operator | May 2005 |
| 10084 | F & S Energy LLC | Crescent, OK 73028 | Oil & Gas Operator | Feb 2025 |
| 10085 | F & S Oil | | Oil Operator | Dec 2021 |
| 10086 | F & S Petroleum, L.L.C. | Lebanon, MO 65536 | Oil & Gas Operator | Apr 2025 |
| 10087 | F B Operating, Inc. | Montague, TX 76251 | Oil & Gas Operator | Aug 2003 |
| 10088 | F C D Oil Corporation | Oklahoma City, OK 73112 | Oil & Gas Operator | Feb 1995 |
| 10089 | F D & Jack Oil Company | Muskogee, OK 74402-1444 | Oil & Gas Operator | May 2015 |
| 10090 | F Davis Oil & Gas LLC | Cleveland, OK 74020 | Oil Operator | Nov 2024 |
| 10091 | F E W Oil Compan | | Oil Operator | Jul 1993 |
| 10092 | F H Walsh Jr Operating Co Inc | | Oil & Gas Operator | Jul 1995 |
| 10093 | F Howard Walsh Jr | | Oil & Gas Operator | Aug 1992 |
| 10094 | F M C Operating LLC | Okmulgee, OK 74447 | Oil & Gas Operator | Jul 2024 |
| 10095 | F M Hoel | | Oil & Gas Operator | Dec 2000 |
| 10096 | F O & G LLC | Pawhuska, OK 74056-5075 | Oil Operator | Apr 2022 |
| 10097 | F P C Disposal Inc | El Reno, OK 73036-5501 | Oil Operator | Apr 2003 |
| 10098 | F P I Antrim One Inc | | Gas Operator | Nov 1991 |
| 10099 | F R Etchen, Jr | | Oil & Gas Operator | Sep 1985 |
| 10100 | F W Rabalais, Inc. | | Oil & Gas Operator | Dec 2014 |