Permeability modifying composition for use in oil recovery
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United States of America Patent
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Aug 5, 1997
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N/A
app pub date -
Jul 26, 1996
filing date -
Nov 16, 1994
priority date (Note) -
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Abstract
A method and use for a dry composition comprising a mixture of water-soluble polymer and an aluminum citrate preparation is disclosed. The polymer is capable of cross-linking in the presence of water and aluminum ions. Any water-soluble polymer known to the art is suitable. Cross-linked polymer forms a gel in highly permeable, watered-out regions of oil-containing rock, allowing for increased oil recovery and decreased water use and recycling.
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