Effect of nano TiO2 and SiO2 on gelation performance of HPAM/PEI gels for high-temperature reservoir conformance improvement. - Yang Liu; Hong-Jun Zhang; Dao-Yi Zhu; Zi-Yuan Wang; Jun-Hui Qin; Qi Zhao; Yu-Heng Zhao; Ji-Rui Hou (Petroleum Science (KeAi Communications Co.), 2023)