US 12,065,614 B1
Branched cellulose-based hydraulic fracturing fluid crosslinker
Wengang Li, Dhahran (SA); Bader Ghazi Al-Harbi, Dammam (SA); Majad Khan, Dhahran (SA); and Muhammad Nawaz Tahir, Dhahran (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 Apr. 3, 2023, as Appl. No. 18/295,059.
Int. Cl. C09K 8/68 (2006.01); E21B 43/26 (2006.01)
CPC C09K 8/685 (2013.01) [E21B 43/26 (2013.01)] 16 Claims
 
1. A hydraulic fracturing fluid comprising:
an aqueous fluid;
an acrylamide-based polymer; and
a crosslinker that crosslinks the acrylamide-based polymer to form a crosslinked gel, wherein:
the crosslinker comprises a cellulose backbone functionalized with branch structures; and
the branch structures comprise oxiranylalkanol branches or polyoxiranylalkanol branches.