考虑滞后效应的水气交替近混相驱数值模拟  

Numerical simulation of near-miscible flooding of water alternating gas considered hysteresis effect

作　　者：刘子雄[1] 刘德华[1] 李菊花[1] 汪亚蓉[1] 

机构地区：[1]长江大学石油工程学院,湖北荆州434023

出　　处：《断块油气田》2008年第3期87-90,共4页Fault-Block Oil & Gas Field

摘　　要：受众多因素的影响,油藏注气难以达到物理意义上的混相。针对水气交替注入方式中气水切换困难的实际情况,在组分数值模拟方法中引入三相相渗滞后模型,结合某油田水气交替混相驱矿场试验,进行了数值模拟计算。结果表明,采用混相驱组分模型、考虑相渗滞后效应的模拟结果,与常规模拟相比,采收率有所降低,而采用近混相驱模拟,采收率降低幅度更大。新模型为准确预测注气开发及有效控制注气参数提供了新思路,在未来的历史拟合中能起到重要作用。This paper introduces a triphase relative permeability hysteresis model in compositional numerical simulation in view of the gas-water switching difficulty in water alternating gas way by the influence of various factors. The paper combines with the miscible water-alternating-gas field example in a oilfield and numerical simulation calculation is taken. A new viewpoint about influence of relative permeability hysteresis on the water-alternating-gas injectability is presented in this paper. A new model considering threephase relative permeability hysteresis on compositional model is used in Pubei Oilfield. The simulation result shows the influence of the hysteresis model on oil production. A new thought about production forecasts and injection control is provided and it will play an important role for history matching in future.

关 键 词：混相驱 水气交替 滞后效应 数值模拟 组分模型 

分 类 号：TE357.45[石油与天然气工程—油气田开发工程]