Methods relating to the stabilization of hydrophobically modified hydrophilic polymer treatment fluids under alkaline conditions
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United States of America Patent
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Jun 25, 2013
Grant Date -
May 31, 2012
app pub date -
Nov 30, 2010
filing date -
Nov 30, 2010
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Abstract
The present invention relates to methods and compositions for treating a water- and hydrocarbon-producing subterranean formation with a relative permeability modifier, and more specifically, to improved treatment fluids, methods for preparing treatment fluids, and methods for use thereof in a subterranean formation. Methods of the present invention comprise providing a treatment fluid comprising a relative permeability modifier, at least one surfactant, and an aqueous phase base fluid; and placing the treatment fluid in a subterranean formation. The relative permeability modifier comprises a hydrophobically modified hydrophilic polymer. The at least one surfactant is operable to maintain the relative permeability modifier in a dissolved state in the treatment fluid above a pH of about 8.
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