A process for converting heavy hydrocarbons into light hydrocarbons which comprises contacting, in a first zone, a heavy hydrocarbon having an API gravity at 25.degree. C. of less than about 20, such as Boscan heavy crude oil and tar sand bitumen, with a liquid comprising water, in the absence of externally...http://www.google.com.au/patents/US4446012?utm_source=gb-gplus-sharePatent US4446012 - Process for production of light hydrocarbons by treatment of heavy hydrocarbons with water
