Method and composition for breaking crosslinked gels
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United States of America Patent
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Feb 28, 1995
Grant Date -
N/A
app pub date -
Dec 30, 1993
filing date -
Dec 30, 1993
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Abstract
Compositions and methods are provided which provide improved viscosity reduction of crosslinked hydratable polymer treating fluids in the presence of uncured resin-coated proppants. The uncured resins are generally uncured phenolic or furan resins. The breaker comprises an oxidizing agent to which is added a sequestering agent comprising a copolymer of vinylpyrrolidone and acrylic acid to sequester at least a portion of any phenolic extracts from said resin that may be present in said treating fluid from contact with the uncured resin.
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