Method for decreasing mobility of dense carbon dioxide in subter

Details Method for decreasing mobility of dense carbon dioxide in subter Method for decreasing mobility of dense carbon dioxide in subter

1990-06-18

1991-07-23

Suchfield, George A.

Wells

Processes

Distinct, separate injection and producing wells

166268, 252 8554, E21B 4322

Patent

active

050335472

ABSTRACT:
Oil recovery by carbon dioxide flooding is increased by adding surfactants to the carbon dioxide at high pressures such that an emulsion with water will be formed in the pore spaces of rock. The emulsion diverts flow of carbon dioxide to rock containing higher oil saturations.

REFERENCES:
patent: 3342256 (1967-09-01), Bernard et al.
patent: 4380266 (1983-04-01), Wellington
patent: 4519455 (1985-05-01), Holtmyer et al.
patent: 4609043 (1986-09-01), Cullick
patent: 4800957 (1989-01-01), Stevens, Jr. et al.
patent: 4828029 (1989-05-01), Irani
patent: 4856588 (1989-08-01), Borchardt

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