稠油油藏段塞蒸汽驱技术研究

Study on Plug Steam Flooding Technique for Heavy Oil Reservoir．

针对稠油蒸汽驱开发现状和油藏特性，运用室内物理模拟和数值模拟技术,揭示了连续汽驱、间歇汽驱、氮气段塞汽驱和活性剂段塞驱不同汽驱方式的开采机理；对各种汽驱方式进行了开发效果对比和操作方式的研究，预测了10年后生产指标并进行了经济评价。通过现场实验，对改善汽驱开发现状，提高采收率，具有重要的指导意义。

： With respect to current situation of heavy oil steam-flooding development and characteristics of the reservoir， adopting laboratory physical simulation technique and numerical simulation technique， and applying mechanisms of intermittent flooding， nitrogen plug steam flooding and active agent flooding， the comparison of development effects and study of operation manners are made， production and development index of 10 years afterward is predicted，their economy evaluations are conducted． Through field experiment， these results have shown to be as guides for improving current steam flooding operation and increasing oil recovery rate．