Steam flooding hydrocarbon recovery process

Details Steam flooding hydrocarbon recovery process Steam flooding hydrocarbon recovery process

1977-08-22

1979-01-09

Novosad, Stephen J.

Wells

Processes

Distinct, separate injection and producing wells

166306, E21B 4324, E21B 4322

Patent

active

041333845

ABSTRACT:
A method for recovering hydrocarbons from a subterranean formation in which steam, for example, is injected into the formation via an injection well to drive the hydrocarbons toward a spaced production well. Water injected via the production well into an upper horizon of the formation is passed downwardly through the formation about the production well and then back into the production well at a lower horizon in the formation. A mixture of displaced hydrocarbons and injected water are then coproduced at the lower horizon thru the production well after which the hydrocarbons are recovered from the mixture. Optionally, a minor amount of a sulfated interfacial tension reducer may be introduced with the steam to promote increased hydrocarbon recovery.

REFERENCES:
patent: 3360044 (1967-12-01), Lange
patent: 3406755 (1968-10-01), Sharp
patent: 3439743 (1969-04-01), Wylie
patent: 3554286 (1971-01-01), Feuerbacher et al.
patent: 3731741 (1973-05-01), Palmer et al.
patent: 3860597 (1975-01-01), Palmer et al.
patent: 4026359 (1977-05-01), Closmann
patent: 4043922 (1977-08-01), Palmer et al.

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