It also has powerful core sealing capacity, drag coefficient was greater than 32, residualresistancefactor was greater than 20 and plugging rate was greater than 95%.
具有较强的岩心封堵能力，阻力系数大于32，残余阻力系数大于20，封堵率大于95%。
2
The way to improve the effect of polymer flooding mainly depends on increasing the viscosity of polymer solution and the ability to establish the residualresistancefactor.