A Guardian article about a WikiLeaks posting that suggests (again) the Saudi oil reserves may be significantly less than previously claimed. There’s an interesting bit in here that suggests future extraction technologies may raise the recoverable portion of an oil field to 70%, up from its current 50-55%. Well… we’ll see.
http://www.guardian.co.uk/business/2011/feb/08/oil-saudiarabia?CMP=twt_gu