Blocking composition for use in subterranean formation
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United States of America Patent
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Feb 27, 2001
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N/A
app pub date -
Feb 18, 1999
filing date -
Sep 18, 1996
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Abstract
A polymer composition for pumping downhole to gel in a subterranean formation comprises a water-soluble copolymer of (i) at least one non-acidic ethylenically unsaturated polar monomer and (ii) at least one copolymerisable ethylenically unsaturated ester; and an organic gelling agent therefor.
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