| 101 | Eagle Oil, LLC | Moline, KS 67353 | Oil Operator | Oct 2016 |
| 102 | Eagle Operating | Midland, TX 79707 | Oil & Gas Operator | May 2013 |
| 103 | Eagle Operating Company | Tulsa, OK 74146-5730 | Oil & Gas Operator | Aug 2020 |
| 104 | Eagle Operating, Inc. | Minot, ND 58701 | Oil & Gas Operator | Dec 2025 |
| 105 | Eagle Petroleum | | Oil & Gas Operator | Nov 1995 |
| 106 | Eagle Petroleum Corporation | Holliday, TX 76366 | Oil & Gas Operator | Oct 2005 |
| 107 | Eagle Petroleum, Inc. | Ellinwood, KS 67526 | Oil Operator | Sep 2025 |
| 108 | Eagle Production, Inc. | Abilene, TX 79605 | Oil & Gas Operator | Feb 2026 |
| 109 | Eagle Resources | | Oil & Gas Operator | Mar 1987 |
| 110 | Eagle Resources Corp | Cranberry TWP, PA 16066-0791 | Oil & Gas Operator | Dec 2012 |
| 111 | Eagle Resources Inc | Claremore, OK 74019-5398 | Oil & Gas Operator | May 2013 |
| 112 | Eagle Resources LP Dba Ted Hoskinson | Roswell, NM 882023900 | Oil & Gas Operator | Dec 2008 |
| 113 | Eagle River Ener | | Oil Operator | Dec 1996 |
| 114 | Eagle River Energy Corporation | Broken Arrow, OK 74011 | Oil & Gas Operator | Nov 2025 |
| 115 | Eagle Road Oil LLC | Tulsa, OK 74103-3312 | Oil & Gas Operator | Nov 2025 |
| 116 | Eagle Rock Mid-Continent Op, LLC | Houston, TX 77252 | Oil & Gas Operator | Sep 2015 |
| 117 | Eagle Rock Mid-Continent Operating LLC | Tulsa, OK 74103-3703 | Oil & Gas Operator | Nov 2025 |
| 118 | Eagle Rock Operating Company,LLC | Houston, TX 77252 | Oil & Gas Operator | Oct 2015 |
| 119 | Eagle Valley Development LLC | Austin, TX 78738 | Oil & Gas Operator | Oct 2023 |
| 120 | Eagle Well Service, Inc | Salyersville, KY 41465 | Oil & Gas Operator | Dec 2023 |
| 121 | Eagleridge Operating, LLC | Dallas, TX 75219 | Oil & Gas Operator | Feb 2026 |
| 122 | Eakin Brothers | Pampa, TX 79065 | Gas Operator | Feb 2026 |
| 123 | Eakin Exploration Inc | Tulsa, OK 74136 | Oil & Gas Operator | Jun 2016 |
| 124 | Eakin J L | Bartlesville, OK 74136 | Oil & Gas Operator | Feb 2020 |
| 125 | Eap Ohio LLC | Oklahoma City, OK 73134-2646 | Oil & Gas Operator | Sep 2025 |
| 126 | Earco Oil Operations, Inc. | McPherson, KS 67460 | Oil Operator | Mar 1999 |
| 127 | Earl Dyess | | Oil & Gas Operator | Jul 1990 |
| 128 | Earl Markham Et Al | | Gas Operator | Jun 1979 |
| 129 | Earl Oil Inc | Stillwater, OK 74074-1079 | Oil & Gas Operator | Nov 2025 |
| 130 | Earl Schwartz Co. | | Oil & Gas Operator | Oct 1989 |
| 131 | Earl W Todd | | Oil Operator | Jan 2008 |
| 132 | Earl-Le Oil Company | Bristow, OK 74010-9547 | Oil & Gas Operator | Dec 2025 |
| 133 | Earley Donald E | Utica, OH 43080 | Oil Operator | Dec 2019 |
| 134 | Earlsboro Energies Corporation | Oklahoma City, OK 73116-3605 | Oil & Gas Operator | Nov 2025 |
| 135 | Earnest Producing Corporation | Midland, TX 79704 | Oil & Gas Operator | Feb 2026 |
| 136 | Earnest R Smith SR | Kingsburg, CA 93631 | Gas Operator | Jul 2006 |
| 137 | Earnest Russel | Okmulgee, OK 74447-1216 | Oil & Gas Operator | Jan 2007 |
| 138 | Earsing, Mary E. | Marilla, NY 14102 | Gas Operator | Dec 2024 |
| 139 | Earth Basics Contracting Corp. | | Oil & Gas Operator | Dec 2001 |
| 140 | Earth Oil Inc | Skiatook, OK 74070-0578 | Oil & Gas Operator | Oct 2008 |
| 141 | Earth Science Exploration, Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | Nov 2012 |
| 142 | Earth Scientists | | Oil Operator | Jan 1986 |
| 143 | Earth Sound, Inc | | Oil Operator | Dec 2017 |
| 144 | Earthbound Energy LLC | Merkel, TX 79536 | Oil Operator | Feb 2026 |
| 145 | Earthbound Resources LLC | Merkel, TX 79536 | Oil & Gas Operator | Feb 2026 |
| 146 | Earthgrains Of West VIrginia, Inc. | | Gas Operator | Apr 2008 |
| 147 | Earthstone Energy, Inc. | The Woodlands, TX 77380 | Oil & Gas Operator | Dec 2017 |
| 148 | Earthstone Operating, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Dec 2025 |
| 149 | Easom, Dave Production Co Inc | | Oil & Gas Operator | Nov 1998 |
| 150 | Easom-Middleton Operating, Inc | | Oil & Gas Operator | Sep 1992 |
| 151 | Eason Drilling & Services Co. | Tulsa, OK 74103 | Oil & Gas Operator | Dec 2005 |
| 152 | Eason Oil Company | Oklahoma City, OK 73112 | Oil & Gas Operator | Mar 2012 |
| 153 | Eason Petroleum Company | | Oil & Gas Operator | Jul 2016 |
| 154 | Eason Production Company | Atlanta, TX 75551 | Oil & Gas Operator | May 2007 |
| 155 | East Ajax Oil Corporation | | Oil & Gas Operator | May 2000 |
| 156 | East Aurora Union Free School District | East Aurora, NY 14052 | Gas Operator | Dec 2024 |
| 157 | East Bay Petroleum | | Oil & Gas Operator | Dec 1987 |
| 158 | East Cheyenne Gas Storage LLC | | Oil & Gas Operator | Jan 2026 |
| 159 | East Fitts Project LTD PTNSHP | Ada, OK 74820 | Oil & Gas Operator | Dec 2002 |
| 160 | East Fork Energy Inc | | Oil Operator | Dec 2015 |
| 161 | East Fork Energy Partners Inc | Edmonton, KY 42129 | Oil Operator | Dec 2016 |
| 162 | East Fork Oil Corporation | | Oil Operator | Dec 2016 |
| 163 | East Property Management, LLC | Sewickley, PA 15143 | Gas Operator | Dec 2024 |
| 164 | East Resources MGMT LLC | Warrendale, PA 15086-7528 | Oil & Gas Operator | Dec 2010 |
| 165 | East Resources, Inc. | Sewickley, PA 15143 | Oil & Gas Operator | Dec 2021 |
| 166 | East Texas Crude Oil Corporation | Tyler, TX 75701 | Oil & Gas Operator | Jun 1994 |
| 167 | East Texas Exploration, LLC | Edmond, OK 73003 | Oil & Gas Operator | Sep 2019 |
| 168 | East Texas Production MGT. Inc | Athens, TX 75751 | Oil & Gas Operator | Feb 2026 |
| 169 | East Union Resources, LLC | Zanesville, OH 43701-5137 | Oil & Gas Operator | Dec 2024 |
| 170 | Eastbrook Of Fairview Inc | Fairview, OK 73737-0148 | Oil Operator | Aug 2013 |
| 171 | Eastco Gas Co. | Midland, TX 79707 | Oil & Gas Operator | Oct 1999 |
| 172 | Eastern Amer Energy Corp | Charleston, WV 25304 | Oil & Gas Operator | Dec 2006 |
| 173 | Eastern Associated Coal/Peabody Coal Co. | | Oil & Gas Operator | Jul 2004 |
| 174 | Eastern Energy Corporation | Bowling Green, KY 42104 | Oil & Gas Operator | Dec 2014 |
| 175 | Eastern Energy Dev Corporation | Oxford, CT 06478-1009 | Oil & Gas Operator | Apr 2020 |
| 176 | Eastern Gas Trans & Storage Inc | Bridgeport, WV 26330-6919 | Oil & Gas Operator | Dec 2025 |
| 177 | Eastern Gas Transmission And Storage, Inc | | Oil & Gas Operator | Dec 2021 |
| 178 | Eastern Kansas Operating, LLC | Sun Lakes, AZ 85248 | Oil & Gas Operator | Apr 2018 |
| 179 | Eastern Ky Oil & Gas, Inc | Paintsville, KY 41240 | Oil & Gas Operator | Dec 2020 |
| 180 | Eastern Ky Prod Co | | Oil Operator | Dec 2023 |
| 181 | Eastern Mountain Fuel Inc | Marietta, OH 45750-1240 | Oil & Gas Operator | Dec 2002 |
| 182 | Eastern Oil Corporation | Houston, TX 77070 | Oil & Gas Operator | Feb 2026 |
| 183 | Eastern Oilwell Cement Co Inc | Seminole, OK 74818-1704 | Oil & Gas Operator | Aug 2008 |
| 184 | Eastern Operating Company LLC | Gans, OK 74936 | Gas Operator | Nov 2025 |
| 185 | Eastern Pacific Oil Co. | | Oil & Gas Operator | Dec 1998 |
| 186 | Eastern Petroleu | | Oil & Gas Operator | Oct 1993 |
| 187 | Eastern Petroleum Company | Girard, OH 44420 | Oil & Gas Operator | Sep 1995 |
| 188 | Eastern States Exploration Co. | | Gas Operator | Dec 2021 |
| 189 | Eastern States Oil & Gas, Inc. | Ravenna, OH 44266 | Oil & Gas Operator | Dec 2020 |
| 190 | Easterwood D E | Duncan, OK 73533-1013 | Oil & Gas Operator | Jun 2001 |
| 191 | Eastex Energy LLC | Shawnee, OK 74804 | Oil Operator | Nov 2025 |
| 192 | Eastex Gas Production Co. | Houston, TX 77042 | Oil & Gas Operator | Aug 1996 |
| 193 | Eastex Operating, Inc. | Tyler, TX 75701 | Oil & Gas Operator | Jun 2003 |
| 194 | Eastland Energy Group Inc | Byesville, OH 43723 | Oil & Gas Operator | Dec 2024 |
| 195 | Eastland Exploration, Inc. | Austin, TX 78763 | Oil & Gas Operator | Apr 1997 |
| 196 | Eastland Oil Company, The | Midland, TX 79702 | Oil & Gas Operator | Feb 2026 |
| 197 | Eastland Operating, L.L.C. | Ranger, TX 76470 | Oil & Gas Operator | Feb 2026 |
| 198 | Eastok Energy Partners LLC | Edmond, OK 73013-1044 | Oil & Gas Operator | Nov 2025 |
| 199 | Eastok Pipeline LLC | Midland, TX 79710 | Gas Operator | May 2019 |
| 200 | Easy Street Oil, Inc. | Iola, KS 66749 | Oil Operator | Sep 1999 |