Oil recovery with water containing carbonate salt and CO.sub.2

Details Oil recovery with water containing carbonate salt and CO.sub.2 Oil recovery with water containing carbonate salt and CO.sub.2

1987-09-24

1988-08-09

Novosad, Stephen J.

Wells

Processes

Distinct, separate injection and producing wells

166279, 166902, 252 8554, 252 8555, E21B 4322

Patent

active

047621788

ABSTRACT:
In a carbonated waterflood oil recovery process the corrosivity of a premixed solution is reduced by dissolving the CO.sub.2 in water containing enough sodium carbonate or bicarbonate to maintain a pH of at least about 4.

REFERENCES:
patent: 2398123 (1946-04-01), Sowers
patent: 2654436 (1953-10-01), Carlisle et al.
patent: 2875833 (1959-03-01), Martin
patent: 2884067 (1959-04-01), Marken
patent: 2964109 (1960-12-01), Martin
patent: 4476930 (1984-10-01), Watanabe
patent: 4602920 (1986-07-01), Diaz et al.

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