Enhanced steam drive recovery of heavy oil

Details Enhanced steam drive recovery of heavy oil Enhanced steam drive recovery of heavy oil

E - Fixed Constructions

21

B

166/39

E21B 43/24 (2006.01)

Patent

CA 1235373

ABSTRACT OF THE DISCLOSURE A method for enhancing steam drive recovery of oil from an oil zone disposed below an overburden (18) including injecting a surfactant continuously into a supply (20) of driving steam to uniformaly mix the surfactant with the steam and thereby provide a driving fluid. The driving fluid is then introduced into the oil zone (16) under sufficient pressure to cause the fluid to drive through a flow channel (S) between the interface I and the overburden (18) thereabove. The surfactant reacts with the oil to enable the fluid to strip away a top layer of the oil which is driven to a production well 14 for removal thereof.

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