Aqueous flooding methods for tertiary oil recovery

Details Aqueous flooding methods for tertiary oil recovery Aqueous flooding methods for tertiary oil recovery

1987-06-15

1989-04-04

Novosad, Stephen J.

Wells

Processes

Separating material entering well

166267, 166274, 166275, 252 8554, E21B 4322

Patent

active

048177156

ABSTRACT:
A method of aqueous flooding of subterranean oil bearing formation for tertiary oil recovery involves injecting through a well into the formation a low alkaline pH aqueous sodium bicarbonate flooding solution. The flooding solution's pH ranges from about 8.25 to 9.25 and comprises from 0.25 to 5 weight percent and preferably about 0.75 to 3.0 weight percent of sodium bicarbonate and includes a petroleum recovery surfactant of 0.05 to 1.0 weight percent and between 1 and 20 weight percent of sodium chloride. After flooding, an oil and water mixture is withdrawn from the well and the oil is separated from the oil and water mixture.

REFERENCES:
patent: 3107726 (1963-10-01), Greenwald
patent: 3493051 (1970-02-01), Gogarty
patent: 3498379 (1970-03-01), Murphy
patent: 3599716 (1971-08-01), Thompson
patent: 3637018 (1972-01-01), Kelly et al.
patent: 3804170 (1974-04-01), Krehbiel et al.
patent: 3804171 (1974-04-01), Krehbiel et al.
patent: 3847823 (1974-11-01), Clark et al.
patent: 3871452 (1975-03-01), Sarem
patent: 3927716 (1975-12-01), Burdyn et al.
patent: 3952803 (1976-04-01), Kerfoot et al.
patent: 3977470 (1976-08-01), Chang
patent: 4004638 (1977-01-01), Burdyn et al.
patent: 4008769 (1977-02-01), Chang
patent: 4099569 (1978-07-01), Bousaid
patent: 4232737 (1980-11-01), Tyler et al.
patent: 4274488 (1981-06-01), Hedges et al.
patent: 4433730 (1984-02-01), Trushenski
patent: 4502541 (1985-03-01), Lawson et al.
patent: 4561501 (1985-12-01), Shaw et al.

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