Well treatment fluid and methods with oxidized polysaccharide-based polymers
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United States of America Patent
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Jan 3, 2006
Grant Date -
Sep 23, 2004
app pub date -
Mar 21, 2003
filing date -
Mar 21, 2003
priority date (Note) -
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Abstract
The present invention provides a well treatment fluid containing water, a amine-based polymer, and an oxidized polysaccharide-based polymer. The oxidized polysaccharide-based polymer is able to crosslink with the amine-based polymer and produce a gel having a viscosity of greater than about 20 cp, measured at a pH of about 4 to about 7 and at STP. The present invention also provides a method of treating a subterranean formation penetrated by a wellbore comprising the steps of: (a) forming the well treatment fluid, and (b) contacting the subterranean formation with the fluid.
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