Waterflood method using surfactants

Details Waterflood method using surfactants Waterflood method using surfactants

1978-08-21

1980-02-12

Novosad, Stephen J.

Wells

Processes

Distinct, separate injection and producing wells

166305R, E21B 4322

Patent

active

041879074

ABSTRACT:
A method for improving the sweep efficiency of a waterflood comprising the addition of a small amount of a surfactant, preferably a petroleum-derived sulfonate, to at least the first portion of injected water. The surfactant interacts with clays in the formation to reduce the permeability of the formation to the flood water and thereby improve the mobility ratio of the flooding process, resulting in a better sweep efficiency of the flooding medium through the reservoir.

REFERENCES:
patent: 3123135 (1964-03-01), Bernard et al.
patent: 3141501 (1964-07-01), Bernard et al.
patent: 3470956 (1969-10-01), Boston et al.
patent: 3480080 (1969-11-01), Murphy
patent: 3498379 (1970-03-01), Murphy
patent: 3677344 (1972-07-01), Hayes et al.
patent: 3871454 (1975-03-01), Harrison
patent: 3939911 (1976-02-01), Maddox, Jr. et al.
patent: 4016932 (1977-04-01), Kalfoglou

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