ZHANG Zhi-Qiu1**, LI Feng1, LI Guo-Qiao2, YU Ying3, ZHOU Sheng-Xia3
1. College of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing 163318, China; 2. Daqing Oilfield Co., Ltd., Second Oil Production Plant, Daqing 163318, China; 3. Quality Inspection Center of Daqing Petrochemical Company, Daqing 163318, China