Method of treating heterogeneous formation with potassium hydrox

Details Method of treating heterogeneous formation with potassium hydrox Method of treating heterogeneous formation with potassium hydrox

1987-09-03

1989-01-17

Suchfield, George A.

Wells

Processes

Separate steps of fracturing or attacking formation

166292, 1663051, E21B 4312

Patent

active

047982454

ABSTRACT:
Solid KCl is present in the front portion of KOH treatment solution to facilitate placement of the solution in low permeability zones of a subterranean formation wherein KOH treatment is desired. The solid KCl temporarily plugs the high permeability zones enabling the KOH solution to enter the low permeability zones. After a period of time the solid dissolves in situ restoring permeability to the formation.

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patent: 4625802 (1986-12-01), Sydansk
patent: 4673040 (1987-06-01), Sydansk

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