Use of Relative Permeability Modifiers in Treating Subterranean Formations
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United States of America Patent
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Issued Date -
Aug 13, 2009
app pub date -
Feb 8, 2008
filing date -
Feb 8, 2008
priority date (Note) -
Abandoned
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Abstract
A method for treating a subterranean formation penetrated by a wellbore utilizes forming at least one of a treatment fluid A and a treatment fluid B. The treatment fluid A comprises an aqueous carrier fluid, a first relative permeability modifier (RPM) polymer, a water-soluble viscosifying polymer and a crosslinking agent capable of crosslinking the viscosifying polymer at a pH of from about 3 to about 5. The treatment fluid B comprises a fresh-water carrier fluid and a second relative permeability modifier (RPM), and optionally an amount of fibers. At least one of the treatment fluids A and B is introduced into the formation through the wellbore.
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