Method of treating heterogeneous formation with potassium hydroxide
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United States of America Patent
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Jan 17, 1989
Grant Date -
N/A
app pub date -
Sep 3, 1987
filing date -
Sep 3, 1987
priority date (Note) -
Expired
status (Latency Note)
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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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