Single well dual/multiple horizontal fracture stimulation...

Details Single well dual/multiple horizontal fracture stimulation... Single well dual/multiple horizontal fracture stimulation...

E - Fixed Constructions

21

B

E21B 43/30 (2006.01) E21B 43/24 (2006.01) E21B 43/26 (2006.01)

Patent

CA 2723198

A method of producing oil which begins by drilling, casing and inserting a tubing string in a wellbore. The method then perforates both an upper portion and a lower portion of the casing to establish communication between the wellbore with a upper horizontal fracture and a lower horizontal fracture. A retrievable packer or a seal assembly is inserted horizontally between the tubing string and the casing and vertically between the upper horizontal fracture and the lower horizontal fracture for heat isolation. Steam is then injected into the wellbore both into the upper horizontal fracture and the lower horizontal fracture. Heavy oil is then produced from the lower horizontal fracture while injecting steam into the upper horizontal fracture

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