Method for enhanced recovery of petroleum

Details Method for enhanced recovery of petroleum Method for enhanced recovery of petroleum

1978-11-24

1980-09-23

Novosad, Stephen J.

Wells

Processes

Distinct, separate injection and producing wells

166273, 166274, 166302, 166303, E21B 4324

Patent

active

042237319

ABSTRACT:
An enhanced oil recovery method comprising injecting an aqueous solution of ammonium salts selected from the group consisting of ammonium sulfite, ammonium bisulfite, and mixtures thereof into a petroleum-bearing earth formation, heating said injected aqueous solution to a temperature in the range of about 120.degree.-300.degree. F., or higher in the presence of said petroleum-bearing earth formation, flowing said heated aqueous solution through said petroleum bearing earth formation to drive petroleum to a recovery well, and producing increased amounts of petroleum from said earth formation through said recovery well.

REFERENCES:
patent: 3042114 (1962-07-01), Willman
patent: 3258072 (1966-06-01), Froning
patent: 3343601 (1967-09-01), Pye
patent: 3357487 (1967-12-01), Gilchrist et al.
patent: 3360043 (1967-12-01), Braden, Jr. et al.
patent: 3385359 (1968-05-01), Offeringa
patent: 3428120 (1969-02-01), Metler
patent: 4078608 (1978-03-01), Allen et al.

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