Micro-slug injection of surfactants in an enhanced oil recovery

Details Micro-slug injection of surfactants in an enhanced oil recovery Micro-slug injection of surfactants in an enhanced oil recovery

1991-07-22

1993-03-16

Suchfield, George A.

Wells

Processes

Cyclic injection then production of a single well

166272, 166273, 1663051, 166309, 166 53, E21B 4322, E21B 4324

Patent

active

051936178

ABSTRACT:
A method for introducing a surfactant into an oil bearing formation includes plurality of a micro-slug injections of surfactant. Each micro-slug injection comprises an "on time" in which the surfactant is introduced into the formation and which is based upon the time needed for the surfactant to generate foam in the formation and a "off time" in which surfactant flow is stopped and is based upon the time period for the generated foam to degrade to a predetermined degree in the formation.

REFERENCES:
patent: 4488598 (1984-12-01), Duerksen
patent: 4601337 (1986-07-01), Lau et al.
patent: 4706752 (1987-11-01), Holm
patent: 4721158 (1988-01-01), Merritt, Jr. et al.
patent: 4852653 (1989-08-01), Borchardt
patent: 4856589 (1989-08-01), Kuhlman et al.
patent: 4953618 (1990-09-01), Hamid et al.
patent: 5052487 (1991-10-01), Wall

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