Carbonated waterflooding for viscous oil recovery

Details Carbonated waterflooding for viscous oil recovery Carbonated waterflooding for viscous oil recovery

1982-04-27

1984-04-10

Novosad, Stephen J.

Wells

Processes

Distinct, separate injection and producing wells

166273, E21B 4324

Patent

active

044415559

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 into the formation via an injection well, subsequently injecting a heated fluid to release the CO.sub.2 from the injected carbonated water and recovering oil from the formation through a production well.

REFERENCES:
patent: 2875831 (1959-03-01), Martin et al.
patent: 3135326 (1964-06-01), Santee
patent: 3204694 (1965-09-01), Johnson, Jr. et al.
patent: 3572437 (1971-03-01), Marberry et al.
patent: 4004636 (1977-01-01), Brown et al.
patent: 4099568 (1978-07-01), Allen

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