Methods and compositions for the diversion of aqueous injection fluids in injection operations
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United States of America Patent
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Jul 21, 2009
Grant Date -
Jul 28, 2005
app pub date -
Jan 24, 2004
filing date -
Jan 24, 2004
priority date (Note) -
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Abstract
An exemplary method of the present invention for performing an injection operation includes providing a water-soluble relative permeability modifier, introducing the water-soluble relative permeability modifier into a subterranean formation; and injecting an aqueous injection fluid into the subterranean formation after introducing the water-soluble relative permeability modifier. An exemplary permeability-modifying injection fluid of the present invention contains water-soluble relative permeability modifier. The water-soluble relative permeability modifiers of the present invention include hydrophobically modified water-soluble polymers, hydrophilically modified water-soluble polymers, and water-soluble polymers without hydrophobic or hydrophilic modification.
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