Recovery of oil by a vertical miscible flood

Details Recovery of oil by a vertical miscible flood Recovery of oil by a vertical miscible flood

1975-11-05

1977-05-10

Novosad, Stephen J.

Wells

Processes

Distinct, separate injection and producing wells

166274, E21B 4316, E21B 4322

Patent

active

040222780

ABSTRACT:
A vertical miscible recovery process for the recovery of oil from an oil-bearing reservoir wherein a miscible slug or blanket of solvent is established at the crest of the oil column or at the gas-oil interface and thereafter is displaced downward by the injection of a drive agent such as natural gas or methane wherein the reservoir is produced simultaneously from near the bottom of the oil column and also near the top of the oil column thereby increasing the spreading rate of the solvent slug.

REFERENCES:
patent: 2897894 (1959-08-01), Draper et al.
patent: 3360045 (1967-12-01), Santourian
patent: 3371711 (1968-03-01), Odeh et al.
patent: 3653438 (1972-04-01), Wagner
patent: 3845821 (1974-11-01), Allen et al.
patent: 3850243 (1974-11-01), Allen et al.
patent: 3878892 (1975-04-01), Allen et al.

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