Multiple zone oil recovery process employing countercurrent...

Details Multiple zone oil recovery process employing countercurrent... Multiple zone oil recovery process employing countercurrent...

E - Fixed Constructions

21

B

166/39

E21B 43/24 (2006.01)

Patent

CA 1237070

ABSTRACT A method for the recovery of oil from a subterranean, viscous oil-containing formation having a number of overlying, permeable oil-bearing strata separated by impervious shale layers. Steam is injected countercurrently through adjacent oil-bearing strata and oil is produced utilizing injection and production wells provided with separate flow paths in fluid communication with each oil-bearing zone. Production in each strata is continued until the water cut of the fluid being produced from the upper zone is unfavorable or until steam breakthrough occurs in the upper zone

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