关键词: 聚合物驱, 复合化学驱, 相对渗透率曲线, 非牛顿流体, 聚合物滞留, 低张力

Abstract: The relative permeability curve of ASP/Oil system was obtained by measuring that of AS/Oil system using steady-state method after polymer retention. The effect of polymer retention and interfacial tension on the relative permeability curve was investigated. The results shows that polymer mainly increase the irreducible water saturation while decreasing the height of relative permeability curves for both water and oil phases; alkali and surfactant mainly decrease the residual oil saturation while increasing the height of relative permeability curve for water phase. The experiments indicated the relations between polymer retention and irreducible water saturation, end-point relative permeability reductions for water and oil phases, and that between interfacial tension and residual oil saturation, end-point relative permeability for water phase.

Key words: polymer flooding, combination flooding, relative permeability curve, non-Newtonian fluid, polymer retention, low-tension