CPC C09K 8/685 (2013.01) [E21B 43/27 (2020.05)] | 16 Claims |
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.
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