US 11,814,580 B1
Hyperbranched polymer-based hydraulic fracturing fluid crosslinker
Wengang Li, Dhahran (SA); Majad Khan, Dhahran (SA); Muhammad Nawaz Tahir, Dhahran (SA); and Bader Ghazi Al-Harbi, Dammam (SA)
Assigned to Saudi Arabian Oil Company, Dhahran (SA); and King Fahd University of Petroleum and Minerals, Dhahran (SA)
Filed by Saudi Arabian Oil Company, Dhahran (SA); and King Fahd University of Petroleum and Minerals, Dhahran (SA)
Filed on Jun. 9, 2022, as Appl. No. 17/836,289.
Int. Cl. C09K 8/68 (2006.01); E21B 43/27 (2006.01)
CPC C09K 8/685 (2013.01) [E21B 43/27 (2020.05)] 16 Claims
OG exemplary drawing
 
1. A hydraulic fracturing fluid comprising:
an aqueous fluid;
an acrylamide-based polymer; and
a hyperbranched crosslinker that crosslinks the acrylamide-based polymer to form a crosslinked gel,
wherein:
the hyperbranched crosslinker comprises a hyperbranched polyethyleneimine polyoxiranylalkanol having a weight-average molecular weight from 10 kDa to 1500 kDa.