对于采用吞吐开发的稠油油藏而言,吞吐后期适时转蒸汽驱是大幅度提高采收率的必要手段。在开展水平井蒸汽驱技术研究的过程中,储层非均质性和地层倾角等地质参数是影响汽驱效果的重要因素。通过建立不同类型油藏概念模型,进行油藏数值模拟研究,分析了地质参数对开发效果的影响,系统剖析了水平井蒸汽驱的地质控制因素。 For the heavy-oil reservoirs developed by the throughput control, the timely transfer of steam flooding in the latter part of the post-treatment period is a necessary means for greatly increasing the recovery rate. During the research of horizontal well steam flooding technology, the geological parameters such as reservoir heterogeneity and dip of formation are the important factors that affect the effect of steam flooding. Through the establishment of conceptual models of different types of reservoirs, reservoir numerical simulation studies were conducted to analyze the influence of geological parameters on development effectiveness. The geological control factors of horizontal well steam flooding were systematically analyzed.