Selectively controlling the flow of fluids through...

Details Selectively controlling the flow of fluids through... Selectively controlling the flow of fluids through...

E - Fixed Constructions

21

B

166/16

E21B 43/22 (2006.01) C09K 8/50 (2006.01) C09K 8/90 (2006.01)

Patent

CA 1056717

"Abstract of the Disclosure" A method of forming a combination plug in the more permeable zones of a subterranean formation of nonuniform permeability in which there is injected into the formation (1) aqueous solutions of a polymer and a material that reacts with the polymer to form a polymer-containing plug and (2) thereafter injecting aqueous solutions of an alkali metal silicate and a material that reacts with the silicate to form a silicate-containing plug.

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