Method of improving formation permeability using chlorine dioxid

Details Method of improving formation permeability using chlorine dioxid Method of improving formation permeability using chlorine dioxid

1990-06-15

1991-07-16

Suchfield, George A.

Wells

Processes

Placing fluid into the formation

1663051, 166312, 252 8553, E21B 4327

Patent

active

050317008

ABSTRACT:
Permeability of a subterranean formation is increased by injecting into the formation sufficient amount of chlorine dioxide solution to react with formation clays and silicates. The pH of the ClO.sub.2 solution is controlled between 0.01 and 3.2 using preferably a mineral acid and liquid CO.sub.2 blended with the aqueous ClO.sub.2 solution.

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