稠油蒸汽驱开采特征及转驱程序研究

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。

Steam flooding recovery characteristics and steam flooding conversion program study for heavy oil.

MethodSteam flooding recovery characteristics and steam flooding conversion program are studied by way of numerical simulation.PurposeTo improve steam flooding recovery effect and to guide oil field production practice.ResultThree stages are divided for steam flooding recovery. They are starting period, highlight period and declining period. one important feature for the steam flooding highlight is the decline of pressure and the appear of production peak. Steam flooding conversion in a full scale shows poor result while steam flooding conversion in different steps is effective.ConclusionSteam flooding highlight is an important period. Upon its development characteristics, more emphasis should be put to reservoir management. Different steps should be taken from experimental well groups to full scale implementation of the whole field.