Method for acidizing siliceous materials contained in high tempe

Details Method for acidizing siliceous materials contained in high tempe Method for acidizing siliceous materials contained in high tempe

1979-02-22

1980-05-20

Novosad, Stephen J.

Wells

Processes

Chemical inter-reaction of two or more introduced materials

166307, 166308, 252855C, E21B 4326, E21B 4327

Patent

active

042034922

ABSTRACT:
An aqueous fluoride salt solution and a substantially anhydrous acid precursor are introduced through a well into a high temperature subterranean formation containing siliceous materials. The acid precursor, which is a normally liquid halogenated hydrocarbon having one or two carbon atoms, hydrolyzes in situ to generate a hydrohalic acid which combines with the fluoride salt to acidize the siliceous materials.

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