...残余阻力系数；泡沫稳定性；实验研究 [gap=1513]Key words：nitrogen foam；porous medium；injection pressure difference；residual resistance factor；foam stability；experiment study ..
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It also has powerful core sealing capacity, drag coefficient was greater than 32, residual resistance factor 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%。
The way to improve the effect of polymer flooding mainly depends on increasing the viscosity of polymer solution and the ability to establish the residual resistance factor.
提高聚合物驱效果的途径主要采用提高聚合物溶液粘度和残余阻力系数。
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