Process for oil recovery from subterranean deposits by emulsion

Details Process for oil recovery from subterranean deposits by emulsion Process for oil recovery from subterranean deposits by emulsion

1982-02-18

1984-07-03

Guynn, Herbert B.

Wells

Processes

Distinct, separate injection and producing wells

166275, 252 855D, E21B 4322

Patent

active

044573731

ABSTRACT:
Extensively emulsion-free oil is recovered from a subterranean reservoir of medium or high salinity by forcing an emulsion, e.g., of oil, into an injection well. Carboxymethylated ethoxylate is utilized as the emulsifier and is selected so that the phase inversion temperature of the system:oil of reservoir/formation water/tenside/optional additives lies 0.degree.-10.degree. C. above the reservoir temperature.

REFERENCES:
patent: 2233382 (1941-02-01), DeGroote et al.
patent: 3149669 (1964-09-01), Binder et al.
patent: 3208515 (1965-09-01), Meadors
patent: 4110228 (1978-08-01), Tyler et al.
patent: 4165785 (1979-08-01), Schievelbein
Lepper, "Erdoel Ergas Zeitschrift", 92:426, (1976).
Balzer et al., Tenside Detergents, 16:256, (1979).

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