Exxon's Australia chief, Mark Nolan, told an industry conference in Adelaide, Australia, that "the end of oil is nowhere in sight." Mr. Nolan cited a U.S. Geological Survey estimate of more than three trillion barrels of conventional recoverable oil resources, of which one trillion barrels has been produced. Conservative estimates of heavy-oil and shale-oil resources push the total to four trillion barrels, while a 10% increase in recoverability will deliver an extra 800 billion barrels according to Nolan.<ref name=MailTrib20060914>Bhushan Bahree and Jeffrey Ball [http://archive.mailtribune.com/archive/2006/0914/biz/stories/wsj-peakoil.htm Some insiders reject 'peak-oil theory'] September 14, 2006 [[Mail Tribune]]</ref> | Exxon's Australia chief, Mark Nolan, told an industry conference in Adelaide, Australia, that "the end of oil is nowhere in sight." Mr. Nolan cited a U.S. Geological Survey estimate of more than three trillion barrels of conventional recoverable oil resources, of which one trillion barrels has been produced. Conservative estimates of heavy-oil and shale-oil resources push the total to four trillion barrels, while a 10% increase in recoverability will deliver an extra 800 billion barrels according to Nolan.<ref name=MailTrib20060914>Bhushan Bahree and Jeffrey Ball [http://archive.mailtribune.com/archive/2006/0914/biz/stories/wsj-peakoil.htm Some insiders reject 'peak-oil theory'] September 14, 2006 [[Mail Tribune]]</ref> |