US 11,993,750 B2
Coated nanosand as relative permeability modifier
Ayman Almohsin, Doha (SA); Edreese Alsharaeh, Riyadh (SA); Mohan Raj Krishnan, Riyadh (SA); and Mohieddin Alghazali, Udhailiyah (SA)
Assigned to Saudi Arabian Oil Company, Dhahran (SA)
Filed by Saudi Arabian Oil Company, Dhahran (SA)
Filed on Jun. 6, 2023, as Appl. No. 18/330,033.
Application 18/330,033 is a division of application No. 18/046,370, filed on Oct. 13, 2022, granted, now 11,827,852.
Application 18/046,370 is a division of application No. 17/179,041, filed on Feb. 18, 2021, granted, now 11,499,092, issued on Nov. 15, 2022.
Prior Publication US 2023/0313028 A1, Oct. 5, 2023
Int. Cl. C09K 8/92 (2006.01); C09D 133/26 (2006.01); C09K 8/03 (2006.01); C09K 8/32 (2006.01); B82Y 40/00 (2011.01)
CPC C09K 8/92 (2013.01) [C09D 133/26 (2013.01); C09K 8/032 (2013.01); B82Y 40/00 (2013.01); C09K 2208/10 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A relative permeability modifier (RPM) that is polyacrylamide (PAM)-coated nanosand comprising nanosand coated with PAM hydrogel, wherein the PAM hydrogel comprises crosslinked PAM in water.