PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The present invention is a method and apparatus for the enhanced recovery of petroleum fluids from the subsurface by in situ combustion of the hydrocarbon deposit, by injecting an oxygen rich gas, and by drawing off a flue gas to control the rate and progation of the combustion front to be predominantly horizontal away from the well bore.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com