| 9201 | Enersource Royalty Corporation | Oklahoma City, OK 73102 | Oil & Gas Operator | May 2013 |
| 9202 | Enerstar Resources LTD Co. | Midland, TX 79701 | Oil & Gas Operator | Jun 2000 |
| 9203 | Enerstar Resources, L.C. | Midland, TX 79701 | Oil & Gas Operator | Apr 1999 |
| 9204 | Enertec Corporation | Nowata, OK 74048-0632 | Oil & Gas Operator | Sep 2018 |
| 9205 | Enertex, Inc. | Midland, TX 79702 | Oil & Gas Operator | Aug 1995 |
| 9206 | Enervest Operating LLC | Houston, TX 77002 | Oil & Gas Operator | Jun 2026 |
| 9207 | Enervest Operating, L.L.C., A Limited Liability Company | | Oil & Gas Operator | Dec 2019 |
| 9208 | Enervest Opr LLC | Charleston, WV 25301-1782 | Oil & Gas Operator | Dec 2019 |
| 9209 | Enervest Production Partners, LTD. | | Gas Operator | Nov 2024 |
| 9210 | Enervest San Juan Operating LLC | Durango, CO 81301 | Gas Operator | Jul 2001 |
| 9211 | Enex Resources Corporation | Houston, TX 77002 | Oil & Gas Operator | Dec 2009 |
| 9212 | Enex Rexources Corp. | | Oil & Gas Operator | Jul 1981 |
| 9213 | Enexco, Inc. | Dallas, TX 75243 | Oil & Gas Operator | Mar 2017 |
| 9214 | Eng, George E. | Midland, TX 79701 | Oil & Gas Operator | Dec 2011 |
| 9215 | Engas Corporation | Jacksboro, TX 76458 | Oil & Gas Operator | May 2008 |
| 9216 | Engas XP, LLC | Wimberley, TX 78676 | Oil & Gas Operator | Feb 2026 |
| 9217 | Engel Farms Corporation | Liberal, KS 67901 | Gas Operator | Mar 2003 |
| 9218 | Engel Investments LLC | Hays, KS 67601 | Oil Operator | Jan 2026 |
| 9219 | Engelke, R. H. | San Antonio, TX 78230 | Oil & Gas Operator | Jun 2026 |
| 9220 | Engelke, Randall Glen | Luling, TX 78648 | Oil & Gas Operator | Jul 2007 |
| 9221 | Engeo Co. | | Oil & Gas Operator | Nov 1986 |
| 9222 | Engineering & Production Service, Inc. | Farmington, NM 87499 | Oil & Gas Operator | May 2026 |
| 9223 | Engineers Oil Company | | Oil & Gas Operator | Mar 2026 |
| 9224 | England Operating LLC | Littleton, CO 80120-4529 | Oil & Gas Operator | Nov 2014 |
| 9225 | Engler, Inc. | Harlingen, TX 78552-0000 | Gas Operator | Dec 2020 |
| 9226 | English Oil & Gas | | Oil Operator | Sep 2021 |
| 9227 | English Oil And Gas, L.L.C. | | Oil Operator | Sep 2021 |
| 9228 | Engroup Resources, L.P. | Houston, TX 77002 | Oil & Gas Operator | Jun 2026 |
| 9229 | Enhanced Energy Partners Corp | Tomball, TX 77377 | Oil & Gas Operator | Jun 2026 |
| 9230 | Enhanced Hydrocarbons Inc | Claremore, OK 74017 | Oil & Gas Operator | May 2013 |
| 9231 | Enhanced RS, Inc. | Luling, TX 78648 | Oil Operator | Jun 2026 |
| 9232 | Eni Us Operating Co. Inc. | | Oil & Gas Operator | Sep 2024 |
| 9233 | Enid Operating, Inc. | Pampa, TX 79065 | Oil & Gas Operator | Jun 2026 |
| 9234 | Eninun Inc | Dayton, OH 45415 | Oil & Gas Operator | Dec 1984 |
| 9235 | Enline Operating, L.L.C. | Houston, TX 77019 | Oil & Gas Operator | Jun 1998 |
| 9236 | Enline Resources, LLC | Houston, TX 77254 | Oil & Gas Operator | Feb 1996 |
| 9237 | Enlink Lig, LLC | | Oil Operator | Jan 2025 |
| 9238 | Enlo Energy Co., LTD. | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2001 |
| 9239 | Enloe Jenny L | Skiatook, OK 74070 | Oil Operator | Nov 1998 |
| 9240 | Enloe Oil Company | Olney, TX 76374 | Oil & Gas Operator | Jun 2000 |
| 9241 | Enmark Gas Gathering LP | Dallas, TX 75252 | Oil & Gas Operator | Dec 2025 |
| 9242 | Ennex Inc | | Oil & Gas Operator | Oct 1993 |
| 9243 | Ennis Bill H | Sasakwa, OK 74867-0001 | Oil & Gas Operator | Sep 2014 |
| 9244 | Enoch Oil | Wichita, KS 67216 | Oil Operator | Jan 2001 |
| 9245 | Enogex Exploration Corp | Oklahoma City, OK 73124-0300 | Oil & Gas Operator | Jun 2000 |
| 9246 | Enpower Resources Inc. | Sugar Land, TX 77479 | Oil & Gas Operator | Jun 2026 |
| 9247 | Enpro LLC | Cottonwood, UT 84047 | Oil & Gas Operator | Nov 2017 |
| 9248 | Enpro, Inc | Winchester, KY 40391 | Oil & Gas Operator | Dec 2024 |
| 9249 | Enprop Inc | | Oil & Gas Operator | Feb 2013 |
| 9250 | Enr Operating, LLC | Eunice, NM 88231 | Oil & Gas Operator | Jun 2026 |
| 9251 | Enre Corp. | San Antonio, TX 78209 | Oil & Gas Operator | Mar 2005 |
| 9252 | Enre LP | Kingwood, TX 77339 | Oil & Gas Operator | Feb 2004 |
| 9253 | Enrich Oil Corporation | Abilene, TX 79604 | Oil & Gas Operator | Jun 2026 |
| 9254 | Enron Corporatio | | Oil & Gas Operator | Aug 1999 |
| 9255 | Enron Oil & Gas Company | Houston, TX 77210 | Oil & Gas Operator | Dec 1999 |
| 9256 | Enserch Exploration | | Oil & Gas Operator | Oct 1996 |
| 9257 | Enserch Exploration Inc | Dallas, TX 75206 | Oil & Gas Operator | Apr 2015 |
| 9258 | Enserch Oil & Gas, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Mar 1998 |
| 9259 | Ensight Energy Group Inc | Richardson, TX 75080-2370 | Oil & Gas Operator | Mar 2026 |
| 9260 | Ensight Energy Management, LLC | Shreveport, LA 71101 | Oil & Gas Operator | Jul 2005 |
| 9261 | Ensight III Energy MGMT, LLC | Shreveport, LA 71101 | Oil & Gas Operator | Apr 2008 |
| 9262 | Ensight IV Energy Management,LLC | Shreveport, LA 71101 | Oil & Gas Operator | Dec 2024 |
| 9263 | Ensight Resources, L.L.C. | Shreveport, LA 71101 | Oil & Gas Operator | Apr 2001 |
| 9264 | Ensign Oil & Gas Inc. | | Oil & Gas Operator | Jul 1993 |
| 9265 | Ensign Operating | | Oil & Gas Operator | Oct 1994 |
| 9266 | Ensign Operating Co. | Denver, CO 80202 | Oil & Gas Operator | Jan 2004 |
| 9267 | Ensign Operating LLC | Houston, TX 77086 | Oil & Gas Operator | Feb 2023 |
| 9268 | Ensminger D & J | | Oil Operator | Dec 1994 |
| 9269 | Ensminger Energy LLC | Moran, KS 66755 | Oil Operator | Feb 2026 |
| 9270 | Ensminger Oil, LLC | Moran, KS 66755 | Oil Operator | Feb 2026 |
| 9271 | Ensminger, Donald & Jack, A General Partnership | Moran, KS 66755 | Oil Operator | Jun 2005 |
| 9272 | Ensource Inc | Midland, TX 79705 | Oil & Gas Operator | Aug 1998 |
| 9273 | Enstar Corporation | Houston, TX 77252 | Oil & Gas Operator | Apr 1988 |
| 9274 | Enstar Energy, Inc. | Arlington, TX 76003 | Oil & Gas Operator | Jun 2026 |
| 9275 | Enstar Petroleum Company | | Oil & Gas Operator | Aug 1985 |
| 9276 | Enstar Petroleum Inc | | Oil & Gas Operator | Apr 1985 |
| 9277 | Ensz, Jerry | Sublette, KS 67877 | Gas Operator | Feb 2026 |
| 9278 | Entek GRB LLC | Denver, CO 80202 | Oil & Gas Operator | Oct 2021 |
| 9279 | Enterprise Energy Corp | Cambridge, OH 43725 | Oil & Gas Operator | Dec 1985 |
| 9280 | Enterprise Energy Exploration Inc | Tulsa, OK 74133-6724 | Oil & Gas Operator | Apr 2026 |
| 9281 | Enterprise Energy Prod Co Inc | Tulsa, OK 74133-6754 | Oil & Gas Operator | Mar 2015 |
| 9282 | Enterprise Exploration Inc | Tulsa, OK 74133 | Oil & Gas Operator | Nov 2020 |
| 9283 | Enterprise Gathering LLC | | Oil Operator | Dec 2024 |
| 9284 | Enterprise Inc | Hays, KS 67601 | Oil Operator | Sep 2015 |
| 9285 | Enterprise Marke | | Oil & Gas Operator | Oct 1992 |
| 9286 | Enterprise Oil Marketing Corp. | Little Rock, AR 72206 | Oil Operator | Sep 1998 |
| 9287 | Enterprise Resources Inc. | | Oil & Gas Operator | Jun 1979 |
| 9288 | Enterprising Enterprises Inc | Tulsa, OK 74137 | Oil Operator | Jun 2009 |
| 9289 | Enterra Resources, LLC | Edmond, OK 73083 | Oil & Gas Operator | Feb 2026 |
| 9290 | Entex Oil Company | | Gas Operator | Dec 1993 |
| 9291 | Entex Petroleum Inc | Oklahoma City, OK 73113 | Oil & Gas Operator | Nov 1997 |
| 9292 | Entex, Inc. | | Oil & Gas Operator | Dec 1984 |
| 9293 | Entransco Energy LLC | Dewey, OK 74029 | Oil & Gas Operator | Oct 2024 |
| 9294 | Enveron Corporation | Portage, MI 49024 | Oil & Gas Operator | Dec 2017 |
| 9295 | Envirogas Inc | Hamburg, NY 14075 | Oil & Gas Operator | Dec 1992 |
| 9296 | Environmental BR Ser Inc | Wooster, OH 44691 | Oil & Gas Operator | Dec 1987 |
| 9297 | Environmental Exp Co | North Canton, OH 44720 | Oil & Gas Operator | Dec 1998 |
| 9298 | Environmental Oil Co | Thornville, OH 43076 | Oil & Gas Operator | Dec 2024 |
| 9299 | Environmental Soil Recovery LTD | | Oil Operator | Apr 2026 |
| 9300 | Envirosearch Corporation | | Oil Operator | Dec 1992 |