三元复合体系的渗流特性

Seepage flow characteristics of ASP system

为了探究聚合物在驱油过程中在地层孔隙内的实际作用情况,通过室内模拟实验,在进行水驱-三元驱-后续水驱之后,通过计算阻力系数和残余阻力系数,比较两者之间的变化。其中,阻力系数(F_R)用来表征聚合物使得流度比降低的程度,同时也代表着水和聚合物溶液的流度的比;残余阻力系数(F_(RR))是用来描述聚合物降低渗透率的程度大小,同时也是油层经过聚合物驱前与聚合物驱后水相渗透率的比值。阻力系数和残余阻力系数是描述聚合物在驱油过程中,增大波及效率性能的重要指标^([1])。

In order to explore the actual effect in polymer flooding process in the formation of pores, we can through the indoor simulation experiment after water flooding-ASP flooding-subsequent water flooding, by calculating the resistance coefficient factor and residual resistance coefficient factor, and compare the changes between them. The resistance coefficient factor（FR ）was used to characterize the polymer makes the mobility ratio decrease, but also represents the mobility of water and polymer solution ratio; the residual resistance coefficient factor（FRR ） is used to describe the polymer permeability reduction degree, but also the reservoir after polymer flooding and the ratio of permeability after polymer flooding. The resistance coefficient and the residual resistance coefficient are important indexes to describe the sweep efficiency in polymer flooding proc, ess.