Enhanced steam drive recovery of heavy oil

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

1982-12-22

1985-05-14

Novosad, Stephen J.

Wells

Processes

Distinct, separate injection and producing wells

166274, 166271, E21B 4324, E21B 4325

Patent

active

045166366

ABSTRACT:
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 uniformly 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.

REFERENCES:
patent: 4068717 (1978-01-01), Needham
patent: 4086764 (1978-05-01), Dilgren et al.
patent: 4109720 (1978-08-01), Allen et al.
patent: 4161217 (1979-07-01), Dilgren et al.
patent: 4175618 (1979-11-01), Wu et al.
patent: 4184549 (1980-01-01), Schierelbein

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