Process for oil recovery from a subterranean reservoir

Details Process for oil recovery from a subterranean reservoir Process for oil recovery from a subterranean reservoir

1982-09-01

1984-12-04

Guynn, Herbert B.

Wells

Processes

Distinct, separate injection and producing wells

166273, 252 855D, E21B 4322

Patent

active

044858736

ABSTRACT:
A process for the recovery of extensively emulsion-free oil from a subterranean reservoir of medium or high salinity comprises forcing into an injection well a 0.1-20% (e.g., 1-20%) by weight solution or dispersion in formation water of carboxymethylated ethoxylates of the formula

REFERENCES:
patent: 2233381 (1941-02-01), De Groote et al.
patent: 4110228 (1978-08-01), Tyler et al.
patent: 4265308 (1981-05-01), Hedges et al.
patent: 4293428 (1981-10-01), Gale et al.
Lepper, "Erdoel Ergas Zeitschrift", 92:426, (1976).
Balzer et al, Tenside Detergents 16:256, (1979).

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