CPC C09K 8/512 (2013.01) [B29C 35/18 (2013.01); C08K 3/042 (2017.05); C08K 3/11 (2018.01); C09K 8/516 (2013.01); E21B 33/138 (2013.01)] | 10 Claims |
1. A method of forming a barrier to shut off or reduce unwanted production of water in a subterranean formation, the method comprising:
injecting a polymer-sand nanocomposite into one or more water producing fractures in the subterranean formation, the polymer-sand nanocomposite comprising sand with a surface polymerization mixed with a polymer hydrogel,
where the surface polymerization comprises non-functionalized graphene and a co-polymer comprising two or more of polystyrene, poly(methyl methacrylate), polyacyrlonitrile, polyvinyl alcohol, polyethylene terephthalate, polybutylene terephthalate, hydrolyzed polyacrylamide, polycarbonate, polyethylene, polyurethane, polypropylene, and acrylonitrile butadiene styrene.
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