Dual-purpose viscosifier and surface active additives and methods of use
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United States of America Patent
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Dec 5, 2017
Grant Date -
Aug 11, 2016
app pub date -
Oct 17, 2013
filing date -
Oct 17, 2013
priority date (Note) -
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Abstract
Dual-purpose additives that may be used as viscosifying agents and surface active agents in fluids, subterranean treatments and oilfield operations are provided. In one embodiment, the methods comprise: providing a treatment fluid comprising a base fluid and a polymeric dual-purpose additive comprising a base polymer comprising a plurality of monomer units, and one or more hydrophobic groups bonded to at least one of the monomer units; introducing the treatment fluid into at least a portion of a subterranean formation; and depolymerizing at least a portion of the dual-purpose additive to form one or more surface active fragments, each of the surface active fragments comprising one or more of the hydrophobic groups bonded to one or more of the monomer units.
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