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利用数值模拟方法，研究蒸汽驱开采特征及转驱程序。目的提高蒸汽驱开发效果，指导油田生产实践。结果蒸汽驱开采分三个阶段，即：蒸汽驱启动阶段、蒸汽驱跃变阶段、蒸汽驱衰竭阶段；蒸汽驱跃变阶段的重要特征是压力下降和产量峰值的出现；全面转驱开发效果差，蒸汽驱易失败，分步转驱开发效果好，蒸汽驱易成功。结论蒸汽驱跃变阶段是蒸汽驱开发的重要阶段，针对其特征，应加强其油藏管理；蒸汽驱从试验井组到全面油田实施，应采取分步转驱方式。
The numerical simulation method is used to study the characteristics of steam flooding and the program of rerouting. Objective To improve the effect of steam flooding development and guide oilfield production practices. Results Steam flooding was divided into three phases, namely: steam flooding start stage, steam flooding stage and steam flooding stage; steam flooding stage is characterized by pressure drop and peak output; , Steam drive easy failure, step by step drive development is good, steam drive easy. Conclusions The steam-driven transition stage is an important stage for the development of steam flooding. In view of its characteristics, its reservoir management should be strengthened. Steam flooding should be carried out step by step from the pilot well group to the comprehensive oilfield.