1. Wang D M, Cheng J C, Yang G Y, et al. Visco-us-elastic polymer can increase microscale displancement efficiency in cores. Acta Petrol Sin, 2002, 21(5): 45–51
2. Wang K L. Study of Improving Polymer Flooding Technology (in Chinese). Beijing: Petroleum Industry Press, 1997
3. Hou J. Principle and Application of Chemical Flooding (in Chinese). Beijing: Petroleum Industry Press, 1997
4. Liao G Z, Wang K L, Yan W H. Experimental study on the effect of mobility ratio on the displacement efficiency of chemical flooding (in Chinese). Petrol Geol Oilfield Dev Daqing, 2001, 20(2): 14–16
5. Nguyen X T, Hsieh M, Philp R P. Waxes and asphaltenes in crude oils. Org Geochem, 1999, 30(2–3):119–132