supported by the National Natural Science Foundation of China(No.51273189);the National Science and Technology Major Project of the Ministry of Science and Technology of China(No.2016ZX05016);the National Science and Technology Major Project of the Ministry of Science and Technology of China(No.2016ZX05046)
Partially hydrolyzed polyacrylamide (HPAM) has been widely used for water shut-off and profile control to enhance oil recovery. Herein, we reported a novel technique by which the crosslinking between HPAM and Cr3+ ...