Polyalkoxy sulfonate, CO.sub.2 and brine drive process for oil r

Details Polyalkoxy sulfonate, CO.sub.2 and brine drive process for oil r Polyalkoxy sulfonate, CO.sub.2 and brine drive process for oil r

1984-01-09

1985-03-05

Suchfield, George A.

Wells

Processes

With indicating, testing, measuring or locating

166273, 166274, E21B 4322, E21B 4706

Patent

active

045025380

ABSTRACT:
Oil is displaced within a subterranean reservoir by injecting a combination of substantially liquefied CO.sub.2, brine and surfactant material into the reservoir, with the surfactant material being a polyalkoxy aliphatic sulfonate surfactant material which has specified dispersing and partitioning properties in contact with the brine and the fluids in the reservoir at the reservoir temperature and a pressure sufficient to substantially liquefy the CO.sub.2 within the reservoir.

REFERENCES:
patent: 3342256 (1967-09-01), Bernard et al.
patent: 3529668 (1970-09-01), Bernard
patent: 3583483 (1971-06-01), Foote
patent: 4088190 (1978-05-01), Fischer et al.
patent: 4113011 (1978-09-01), Bernard et al.
patent: 4161217 (1979-07-01), Dilgren et al.
patent: 4380266 (1983-04-01), Wellington
patent: 4445573 (1984-05-01), McCaleb

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