The variation of seepage velocity, resistance coefficient, reservoir permeability and oil recovery in porous media of water-drive reservoir in direct current (DC) electric field are studied in detail.
实验研究了外加直流电场作用下水驱油藏多孔介质中的流体渗流速度、阻力系数、储层渗透率及原油采收率的变化特性。
The permeability coefficient of the seepage field changes in the exponent attenuation.
定量分析对井回灌过程中回灌井周围渗流场变化，渗透系数呈指数衰减。
The cracks growth induce the increase of permeability coefficient, ultimately the change of seepage field.
岩体裂纹的扩展引起岩体渗透系数的增加，导致渗流场的改变。
Four kinds of amendments can improve soil physical properties. Soil bulk density decreased, soil porosity, permeability coefficient and field capacity increased under treatments.
四种改良剂均能不同程度的改善土壤物理性状，能降低土壤容重，提高土壤总孔隙度，加快渗透速度，增加田间持水量。
Permeability coefficient is derived from field SWCC, which is of significance for actual engineering.
从土-水特征曲线还能获知非饱和膨胀土的渗透参数，对工程具有一定的指导意义。
Permeability coefficient is derived from field SWCC, which is of significance for actual engineering.
从土-水特征曲线还能获知非饱和膨胀土的渗透参数，对工程具有一定的指导意义。
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