Carbonated waterflooding for viscous oil recovery using a CO.sub

Details Carbonated waterflooding for viscous oil recovery using a CO.sub Carbonated waterflooding for viscous oil recovery using a CO.sub

1982-04-27

1983-11-15

Novosad, Stephen J.

Wells

Processes

Distinct, separate injection and producing wells

166266, E21B 4320, E21B 4322

Patent

active

044150326

ABSTRACT:
Viscous oil is recovered from a subterranean, viscous oil-containing formation by injecting a slug of CO.sub.2 carbonated water containing a CO.sub.2 solubility promoter, a slug of a CO.sub.2 solubility demoter, and a water drive to displace the mobilized oil to a production well for recovery.

REFERENCES:
patent: 2875831 (1959-03-01), Martin et al.
patent: 3135326 (1964-06-01), Santee
patent: 3207217 (1965-09-01), Woertz
patent: 3442332 (1969-05-01), Keith
patent: 3800874 (1974-04-01), Kern
patent: 3882940 (1975-05-01), Carlin
patent: 4380266 (1983-04-01), Wellington

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