Method of reducing permeability in subterranean formation by use

Details Method of reducing permeability in subterranean formation by use Method of reducing permeability in subterranean formation by use

1986-12-01

1987-06-30

Suchfield, George A.

Wells

Processes

Cementing, plugging or consolidating

166292, 166300, 166303, 166309, E21B 33138, E21B 4324

Patent

active

046763180

ABSTRACT:
A method of reducing the permeability of an area of a subterranean formation is disclosed. An alkali metal silicate foam is produced by injecting into the formation a solution of alkali metal silicate and a chemical surfactant, and a non-condensible gas. The foam hardens into a substantially impermeable solid. The foam may be used to reduce permeability in areas of the formation which have been steam swept during steam stimulation cycles. Thus, subsequent steam stimulation cycles will be directed to uncontacted areas of the formation.

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