Enhanced recovery of oil from a dipping subterranean oil-bearing

Details Enhanced recovery of oil from a dipping subterranean oil-bearing Enhanced recovery of oil from a dipping subterranean oil-bearing

1977-08-24

1979-01-30

Novosad, Stephen J.

Wells

Processes

Distinct, separate injection and producing wells

E21B 4322

Patent

active

041367383

ABSTRACT:
Recovery of oil from a dipping subterranean oil-bearing reservoir is effected by the injection of a first slug of a light hydrocarbon at a high rate to insure mixing with the reservoir oil adjacent the injection well followed by the injection of a second slug of carbon dioxide at a low rate to form a conditionally miscible transition zone with the altered reservoir oil and thereafter by the injection of a drive agent.

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patent: 3157230 (1964-11-01), Connally, Jr. et al.
patent: 3207217 (1965-09-01), Woertz
patent: 3346046 (1967-10-01), Boston
patent: 3616854 (1971-11-01), Braden, Jr.
patent: 3811501 (1974-05-01), Burnett et al.
patent: 3811502 (1974-05-01), Burnett
patent: 3811503 (1974-05-01), Burnett et al.
patent: 3854532 (1974-12-01), Braden, Jr.

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