| 2101 | Barclay Petroleum Inc | Bremen, OH 43107 | Oil & Gas Operator | Dec 2017 |
| 2102 | Barco Co. | | Oil & Gas Operator | Dec 2000 |
| 2103 | Barco Energy, Inc. | Great Bend, KS 67530 | Oil Operator | Jun 2001 |
| 2104 | Barco Oil Co. | | Oil Operator | Dec 2009 |
| 2105 | Barcoo Exploration Inc. | | Gas Operator | Jan 1993 |
| 2106 | Barden/Bass O & G Expl. Co. Inc. | Terrell, TX 75160 | Oil & Gas Operator | Mar 2008 |
| 2107 | Barden/Bass Oil & Gas Exploration Company Inc | Terrell, TX 75160-3143 | Oil Operator | Jun 2026 |
| 2108 | Bareto Energy LLC | | Oil Operator | Jul 2026 |
| 2109 | Barfield Oil Cor | | Oil Operator | Oct 1995 |
| 2110 | Barger Petroleum Co. | Irving, TX 75061 | Oil & Gas Operator | Jan 2019 |
| 2111 | Bargo Energy Company | Houston, TX 77010 | Oil & Gas Operator | May 2001 |
| 2112 | Bargo Energy Corporation | | Oil & Gas Operator | Apr 2000 |
| 2113 | Bargo Petroleum Corporation | Houston, TX 77002 | Oil & Gas Operator | Sep 2014 |
| 2114 | Barham-Boyne Oil Co. Inc. | | Oil Operator | Dec 1992 |
| 2115 | Barj Oil Co. | Brownfield, TX 79316 | Oil & Gas Operator | Sep 2026 |
| 2116 | Barker Oil | | Oil Operator | Sep 2023 |
| 2117 | Barker Production Co. | Shamrock, TX 79079 | Oil & Gas Operator | Mar 2010 |
| 2118 | Barker Production Co., LP | San Angelo, TX 76904 | Oil & Gas Operator | Sep 2026 |
| 2119 | Barker, Rodney | Shamrock, TX 79079 | Oil & Gas Operator | Aug 2012 |
| 2120 | Barline Oil, LLC | Wichita, KS 67206 | Oil Operator | Nov 2019 |
| 2121 | Barn Owls LLC | | Oil & Gas Operator | Jul 2026 |
| 2122 | Barnard Oil Operations | | Oil Operator | May 2026 |
| 2123 | Barnard Wells Co | | Oil Operator | Nov 2000 |
| 2124 | Barnard, Roy A | Cleveland, OK 74020-4403 | Oil Operator | Jun 2026 |
| 2125 | Barnes Darrell | Drumright, OK 74030-5879 | Oil & Gas Operator | Jun 2026 |
| 2126 | Barnes Exploration Co. | Nashville, TN 37209 | Oil & Gas Operator | Feb 1995 |
| 2127 | Barnes Hugoton C | | Gas Operator | Oct 1993 |
| 2128 | Barnes Mineral Production, LTD. | Hallettsville, TX 77964 | Oil & Gas Operator | Sep 2026 |
| 2129 | Barnes Oil & Gas LLC | Nashville, TN 37221 | Oil & Gas Operator | Jun 2017 |
| 2130 | Barnes Oil & Gas, Inc. | | Gas Operator | Jun 1991 |
| 2131 | Barnes Producing Company LLC | Ardmore, OK 73401-8882 | Oil Operator | Jul 2026 |
| 2132 | Barnes Resources | Kane, PA 16735-0441 | Oil & Gas Operator | Dec 2015 |
| 2133 | Barnes, Cordell W. | Caney, KS 67333 | Oil Operator | Dec 1986 |
| 2134 | Barnes, Jerry B. | Gainesville, TX 76241 | Oil & Gas Operator | Oct 2006 |
| 2135 | Barnes, K. A. | Somerset, TX 78069 | Oil & Gas Operator | Jan 2013 |
| 2136 | Barnes, L.- Oil Company | | Oil Operator | Jan 2014 |
| 2137 | Barnes, Larry Petroleum, Inc. | Englewood, CO 80112 | Oil & Gas Operator | Jul 1996 |
| 2138 | Barnett Darrell | Bristow, OK 74010-4926 | Oil Operator | Jan 2019 |
| 2139 | Barnett Drilling & Production | | Gas Operator | Oct 1986 |
| 2140 | Barnett Energy, Inc. | Graham, TX 76450 | Oil & Gas Operator | Sep 2026 |
| 2141 | Barnett James E | Skiatook, OK 74070-0100 | Oil & Gas Operator | May 2013 |
| 2142 | Barnett John | Skiatook, OK 74070 | Oil & Gas Operator | Jun 2026 |
| 2143 | Barnett Oil | | Oil Operator | Oct 2009 |
| 2144 | Barnett Oil Co | | Oil & Gas Operator | Dec 2009 |
| 2145 | Barnett Oil Investments, Inc. | Hobbs, NM 88240 | Oil & Gas Operator | Mar 1999 |
| 2146 | Barnett Operating, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Mar 1999 |
| 2147 | Barnett Serio | | Gas Operator | Oct 1992 |
| 2148 | Barnett Serio Exploration Co | | Oil & Gas Operator | Oct 1992 |
| 2149 | Barnett, G. | Graham, TX 76450 | Oil Operator | Sep 2026 |
| 2150 | Barnette & Sons, Inc. | Dubach, LA 71235 | Oil & Gas Operator | Mar 2011 |
| 2151 | Barney, Constance S. & Wallace Barney | Andover, NY 14806 | Oil & Gas Operator | Dec 2025 |
| 2152 | Barney, Douglas F. & Kelly J. | Wellsville, NY 14895 | Gas Operator | Dec 2025 |
| 2153 | Barnhart Co LLC | Houston, TX 77056 | Oil & Gas Operator | Sep 2026 |
| 2154 | Barnhart Co. | Houston, TX 77056 | Oil & Gas Operator | Sep 2026 |
| 2155 | Barnhill, Monte | Muenster, TX 76252 | Oil Operator | Sep 2026 |
| 2156 | Barnwell Oil Company, Inc. | | Oil & Gas Operator | Sep 1991 |
| 2157 | Barnwell Petroleum Corp. | | Oil & Gas Operator | Sep 1978 |
| 2158 | Baron Crest Energy Co | Apollo, PA 15613-8912 | Oil & Gas Operator | Dec 2007 |
| 2159 | Baron Energy Inc. | San Marcos, TX 78666 | Oil & Gas Operator | Sep 2026 |
| 2160 | Baron Energy LTD. | Midland, TX 79702 | Oil & Gas Operator | Oct 2005 |
| 2161 | Baron Exploration Company | Edmond, OK 73034 | Oil & Gas Operator | Sep 2026 |
| 2162 | Baron Group Inc | | Oil & Gas Operator | Dec 2020 |
| 2163 | Barr Energy LLC | | Oil Operator | Jun 2010 |
| 2164 | Barr, David E & Garnet M | Grantsville, WV 261479862 | Oil & Gas Operator | Dec 2021 |
| 2165 | Barracuda Operating Company | Ness City, KS 67560 | Oil Operator | Apr 2026 |
| 2166 | Barrel Springs Development Corp | Denver, CO 80202 | Oil & Gas Operator | Oct 1986 |
| 2167 | Barrett Brothers Oil & Gas, Inc. | San Antonio, TX 78217 | Oil & Gas Operator | Dec 2020 |
| 2168 | Barrett Brothers Oil And Gas | San Antonio, TX 78217 | Oil & Gas Operator | Mar 1995 |
| 2169 | Barrett Corporation* Bill | | Oil & Gas Operator | May 2026 |
| 2170 | Barrett Drilling Company | Shawnee, OK 74802-1345 | Oil & Gas Operator | Jun 2013 |
| 2171 | Barrett Oil & Gas Inc | Albany, KY 42602 | Oil & Gas Operator | Dec 2024 |
| 2172 | Barrett Oil Co. | White Oak, TX 75693 | Oil & Gas Operator | Dec 2024 |
| 2173 | Barrett Oil LLC | Muskogee, OK 74403 | Oil Operator | Jun 2026 |
| 2174 | Barrett Patrick | | Oil & Gas Operator | Apr 1988 |
| 2175 | Barrett Resources Corporation | Denver, CO 80202 | Oil & Gas Operator | Aug 2003 |
| 2176 | Barrier Resources,L.L.C. | Cedar Park, TX 78613 | Oil & Gas Operator | Aug 2003 |
| 2177 | Barron Kidd-Great American Exploration | | Oil Operator | Dec 1968 |
| 2178 | Barron Operating LLC | Midland, TX 79703 | Oil & Gas Operator | Jun 2011 |
| 2179 | Barron Petroleum LLC | San Antonio, TX 78205 | Oil & Gas Operator | Sep 2026 |
| 2180 | Barron Utilities, Inc. | | Oil Operator | Jun 1999 |
| 2181 | Barrow Petroleum LLC | Midland, TX 79710 | Oil & Gas Operator | Sep 2026 |
| 2182 | Barrow-Shaver Resources Co. | Tyler, TX 75703 | Oil & Gas Operator | Sep 2026 |
| 2183 | Barry & Campbell | | Oil & Gas Operator | Apr 1981 |
| 2184 | Barry D Lee Dba Barry Lee Investments | Crossroads, NM 88114 | Oil & Gas Operator | Jan 2022 |
| 2185 | Barry Rock Oil Co. Inc. | Plain Dealing, LA 71064 | Oil & Gas Operator | Dec 2024 |
| 2186 | Barta Enterprises | Oklahoma City, OK 73162-1728 | Oil & Gas Operator | Jun 2026 |
| 2187 | Bartlett Brenda S & Bartlett Norman C | | Gas Operator | Dec 2025 |
| 2188 | Bartlett, Donald & Janice | South Dayton, NY 14138 | Gas Operator | Dec 2025 |
| 2189 | Bartlett, Roy, G. | Harrisville, WV 26362 | Oil & Gas Operator | Dec 2021 |
| 2190 | Bartley Oil & Gas Co LLC | Emlenton, PA 16373 | Oil Operator | Dec 2025 |
| 2191 | Bartling Oil Com | | Gas Operator | Dec 1992 |
| 2192 | Bartling Oil Company | Austin, TX 78733 | Gas Operator | Jun 2017 |
| 2193 | Barto Oil Co. | | Oil & Gas Operator | Dec 1992 |
| 2194 | Barton Edward Lee | Mounds, OK 74047-4177 | Oil Operator | Jun 2026 |
| 2195 | Barton Exploration, Inc. | Hays, KS 67601 | Oil & Gas Operator | May 2026 |
| 2196 | Barton Oil & Gas Co., Inc. | | Oil & Gas Operator | Sep 1993 |
| 2197 | Barton Oil Co. | Baird, TX 79504 | Oil Operator | Jun 2004 |
| 2198 | Barton Oil Compa | | Oil Operator | Jan 1986 |
| 2199 | Barton Oil, LLC | | Oil & Gas Operator | Jan 2014 |
| 2200 | Barton, Athol Oil , Inc. | Russell, KS 67665 | Oil Operator | Jul 2001 |