Steam injection profile control agent and process

Details Steam injection profile control agent and process Steam injection profile control agent and process

1990-12-03

1992-04-14

Suchfield, George A.

Wells

Processes

Distinct, separate injection and producing wells

166293, 166300, E21B 33138, E21B 4322, E21B 4324

Patent

active

051039079

ABSTRACT:
A method for controlling the profile of a formation where temperatures higher than 400 degress F. are encountered. An aqueous solution of potassium silicate is injected into a zone of greater permeability in a formation. Afterwards, an alcoholic solution of hydrated calcium chloride is injected into the greater permeability zone. Calcium silicate is formed in-situ thereby substantially reducing the permeability of the higher permeability zone. Thereafter, a steam-flooding or fire-flooding operation is commenced in a lower permeability zone.

REFERENCES:
patent: 1421706 (1922-07-01), Mills
patent: 2402588 (1946-06-01), Andresen
patent: 3175611 (1965-03-01), Hower
patent: 3202214 (1965-08-01), McLaughlin
patent: 3645336 (1972-02-01), Young et al.
patent: 3658131 (1972-04-01), Biles
patent: 3805893 (1974-04-01), Sarem
patent: 3965986 (1976-06-01), Christopher
patent: 4676318 (1987-06-01), Myers et al.

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