Heavy oil recovery from deep formations

Details Heavy oil recovery from deep formations Heavy oil recovery from deep formations

E - Fixed Constructions

21

B

166/36

E21B 43/243 (2006.01) E21B 36/02 (2006.01) E21B 43/24 (2006.01)

Patent

CA 1176558

HEAVY OIL RECOVERY FROM DEEP FORMATIONS ABSTRACT OF THE DISCLOSURE Method of heavy oil recovery from deep formations using in-situ wet oxidation steam generation, and a generator for such purpose, comprising a feed for a coal/water slurry and a feed of oxidative gas from ground level to the formation, forming a cavity in the formation where the slurry and gas meet for "wet oxidation" under the inherent pressures and temperature of the deep cavity, augmented by pressurizing the feeds and, if necessary by use of a primary ignitor, to generate carbon dioxide and steam which forces the heavy oil through one or more produc- ing regions located in the formation in the neighborhood of the cavity. Packing may be set in place above the formation to limit escape of productive gas products of the wet oxidation.

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