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应用数值模拟的方法和渗透率变异系数的概念，研究了３种类型稠油油藏纵向渗透率非均质性对蒸汽驱开采效果的影响规律。结果表明：稠油油藏纵向渗透率非均质性对蒸汽驱开采效果有较大影响，其影响大小不仅与渗透率非均质程度有关，而且与沉积旋回有关。同时指出，要提高纵向渗透率非均质性严重的稠油油藏的蒸汽驱开采效果，应采取有效措施防止蒸汽带过早突破，提高蒸汽波及效率。
The influence of vertical permeability heterogeneity of three types of heavy oil reservoirs on the effect of steam flooding was studied by applying the numerical simulation method and the concept of permeability coefficient of variation. The results show that longitudinal heterogeneity of heavy oil reservoirs has a great influence on the effect of steam flooding. The size of the influence is not only related to the degree of heterogeneity of permeability, but also related to sedimentary cycles. At the same time, it is pointed out that in order to improve the steam flooding recovery of heavy oil reservoirs with serious vertical permeability heterogeneity, effective measures should be taken to prevent the steam strips from breaking through too early and improve the steam sweep efficiency.