E. M. Warburg Pincus & Co. LLC. Eastern American Energy Corp. Ecopetrol Edegel Edinburgh Oil & Gas PLC. Edisto Resources Corp. El Paso Energy Corp. Elan Energy Elf Exploration Inc. Elite Exploration LP. Ellora Energy LLC. Emax Oil Co. Emerald Oil and Mining Co. Empire Energy Ltd. Enbridge Inc. Encana Corp. Encore Acquisition Partners Inc. Endowment Advisors Enercap Corp. Energem Resources Energie Baden-Wurttemberg AG. Energy Acquisition Corp. Energy Corp. of America Energy Partners Ltd. Energy Resource Technology Inc. Energy XXI Services LLC. Engasco ENI S.p.A. Enron Corp. Ensign Oil & Gas Inc. Enstor Operating Co. LLC. Entergy Power Group Enveron Corp. EOS Partners Equatorial Energy Inc. Equitable Production ERG Resources LLC. Eternal Energy Corp. Eurogas Inc. European Hydrocarbons Ltd. Evertson Oil Cos. Exalta Inc. Excelco Energy Inc. Explore Enterprises LLC. |
East Resources Inc. Eastern States Oil and Gas Inc. Ecorp Texas LLC. Edge Petroleum Corp. Edisto Exploration and Production Co. EEX E & P Co. LP. El Sordo Gathering System Inc. Eldorado Bank Elgin Partners LLC. Elk Petroleum Inc. Elmworth Energy Corp. Emerald Energy PLC. Emerging Markets Partnership Empiric Energy Inc. Enbridge International Inc. Encap Investments LC. Endeavour Oil & Gas Inc. Enduring Resources Enerfin Resources Co. Energen Resources Corp. Energiya Ltd. Energy Consultants LLC. Energy Development Corp. Energy Reserves Group LLC. Energy Virtual Partners Enervest Management Co. LC. Englehart Energy Enogex Inc. Ensearch Energy Ensley Properties Inc. Entek USA Inc. Enterprise Oil Gulf Of Mexico EOG Resources Epic Energy Equinox Oil Co. Equity Oil Co. Esenjay Exploration Inc. Eurenergy Resources Corp. European Bank For Reconstruction & Devevelopment Evergreen Energy Strategies Evrofinance Commercial Bank Excel Resources Inc. Exco Resources Inc. Exxon Mobil Corp. |