在模型中引入了超滤常数，根据超滤常数将超滤过程稳态渗透通量计算分为有滤饼层和无滤饼层两种情况。
The ultrafiltration constant is introduced to this model, by which the steady ultrafiltration process can be divided into two types: in the presence of cake and in the absence of cake.
为了研究低渗透砂岩的启动压力梯度，设计了一种非稳态渗流中测量压力的试验方法。
The threshold pressure gradient of low permeability sandstone was studied experimentally by measuring the pressure attenuation in an unsteady seepage flow.
用等值渗流阻力法解决了这个难题，建立了裂缝性低渗透油藏稳态渗流的理论模型。
Using the steady-state productivity equation, a conventional method, is difficult to theoretically deal with the randomly dispersed natural fractures.
在稳态条件下，利用该方法测定了水湿样品的油、气、水三相相对渗透率。
Three-phase relative permeability of oil, gas and water for a number of water wet sandstone. core samples has been measured by this method in steady state condition.
通常油水相对渗透率可用稳态和非稳态两种方法求得。
The oil water relative permeability generally get by steady state method and unsteady state method.
通常油水相对渗透率可用稳态和非稳态两种方法求得。
The oil water relative permeability generally get by steady state method and unsteady state method.
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