Aquifer-plugging steam soak for layered reservoir

Details Aquifer-plugging steam soak for layered reservoir Aquifer-plugging steam soak for layered reservoir

1976-07-21

1977-12-27

Novosad, Stephen J.

Wells

Processes

Heating, cooling or insulating

166263, 166272, E21B 4324

Patent

active

040649423

ABSTRACT:
An improved steam soak process recovers viscous oil from a reservoir containing a relatively steam impermeable oil-rich layer above a relatively steam permeable water-rich layer. Steam is injected at a rate and volume that displaces an oil bank into the water layer. The cooling of the oil bank impedes the flow of water so that, during the production cycle, the rate of oil recovery is increased.

REFERENCES:
patent: RE25918 (1965-11-01), Craig, Jr. et al.
patent: 1379657 (1921-05-01), Swan
patent: 3292702 (1966-12-01), Boberg
patent: 3324946 (1967-06-01), Belknap
patent: 3358762 (1967-12-01), Closmann
patent: 3434544 (1969-03-01), Satter et al.
patent: 3439742 (1969-04-01), Durie
patent: 3847219 (1974-11-01), Wang et al.
patent: 3993135 (1976-11-01), Sperry et al.

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