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

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

1987-10-19

1989-09-05

Terapane, John F.

Compositions

Leather or fur treating

252 8551, 166273, 166274, 166275, E21B 4322

Patent

active

048636185

ABSTRACT:
In displacing oil by injecting CO.sub.2, water and surfactant at high pressure, surfactant loss by adsorption is reduced by including alkali metal carbonate or bicarbonate salt in the injected water to increase the pH of the solution at the conditions encountered in the reservoir.

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