Journal of Petrochemical Universities
The Effect of Structure of Viscosity Reducer to Viscosity Reducing Effect for Heavy Oils
ZHU Jing,LI Chuan-xian,XIN Pei-gang
Journal of Petrochemical Universities . 2011, (3): 39 -42 .  DOI: 10.3696/j.issn.1006-396X.2011.03.010