Recovery method for high viscosity petroleum

Details Recovery method for high viscosity petroleum Recovery method for high viscosity petroleum

E - Fixed Constructions

21

B

166/39

E21B 43/24 (2006.01)

Patent

CA 1151530

RECOVERY METHOD FOR HIGH VISCOSITY PETROLEUM (D#74,865-F) ABSTRACT OF THE DISCLOSURE High viscosity petroleum, such as heavy oils and tar, is recovered by first drilling a number of production wells in a conventional pattern, then drilling a plurality directionally drilled injection wells extending radially inward toward each producing well, such that the surface location of each injection well is not less than the normal spacing between production wells, and the bottom hole location approaches the production well closely enough that fluid communication between the two wells can be established by the injection of heated fluids into the injection well. The petroleum is then recovered from the producing well by conventional thermal means. I

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