In situ combustion for oil recovery

Details In situ combustion for oil recovery In situ combustion for oil recovery

E - Fixed Constructions

21

B

166/36

E21B 43/243 (2006.01) E21B 36/00 (2006.01) E21B 41/00 (2006.01)

Patent

CA 1170979

Abstract of the Disclosure An oil recovery installation made up of an inner conduit for an oxidant gas and a surrounding outer conduit forming therebetween a water jacket for cooling liquid leading from an upper end at the surface through a sealing well casing to a lower end within the underground oil re- covery formation. Terminal means closes the lower end of the outer conduit and provides a restricted passage in communication with the inner-conduit for injecting oxygen into the formation. There is means for supplying oxidant gas under pressure to the upper end of the inner conduit and means for supplying water to circulate within the cooling jacket. There is means for controlling the supply rate of oxidant gas and means for controlling the water supply rate.

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