US 11,725,131 B2
Polymer-sand nanocomposite for water shutoff
Ayman Almohsin, Doha (SA); Edreese Alsharaeh, Riyadh (SA); and Mohammed Abdullah Bataweel, Dhahran (SA)
Assigned to Saudi Arabian Oil Company, Dhahran (SA); and Alfaisal University, Riyadh (SA)
Filed by Saudi Arabian Oil Company, Dhahran (SA); and Alfaisal University, Riyadh (SA)
Filed on Dec. 15, 2021, as Appl. No. 17/551,944.
Application 17/551,944 is a division of application No. 16/854,274, filed on Apr. 21, 2020, granted, now 11,261,367.
Prior Publication US 2022/0106517 A1, Apr. 7, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. C08K 3/11 (2018.01); B29C 35/18 (2006.01); C09K 8/512 (2006.01); C08K 3/04 (2006.01); C09K 8/516 (2006.01); E21B 33/138 (2006.01)
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
OG exemplary drawing
 
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.