Wells – Processes – In situ combustion
Patent
1982-01-22
1985-04-09
Suchfield, George A.
Wells
Processes
In situ combustion
166 57, E21B 43243, E21B 3600
Patent
active
045095957
ABSTRACT:
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 recovery 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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Lee Robert G. H.
Savard Guy
Canadian Liquid Air Ltd/Air Liquide
Suchfield George A.
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