Methods for placement of sealant in subterranean intervals
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United States of America Patent
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Sep 25, 2012
Grant Date -
May 13, 2010
app pub date -
Dec 17, 2009
filing date -
Apr 4, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
Methods for treating an interval of a subterranean formation having a permeability that varies include identifying the interval to be treated; introducing a relative-permeability modifier into the interval, wherein the relative-permeability modifier modifies the interval to have a more uniform effective permeability to water, and wherein the relative-permeability modifier comprises a water-soluble polymer; and introducing a sealant into the interval, wherein the more uniform effective permeability of the interval allows for a more uniform treatment of the interval by the sealant than would be allowed without treatment of the interval with the relative-permeability modifier.
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