岩石压缩系数对油藏数值模拟结果的影响  

Effect of rock compressibility on reservoir numerical simulation

作　　者：张学磊[1] 李传亮[1] 

机构地区：[1]西南石油大学,四川成都610500

出　　处：《特种油气藏》2008年第2期50-51,55,共3页Special Oil & Gas Reservoirs

基　　金：四川省应用基础研究项目"双重有效应力在油藏工程中的应用基础研究"(04zy029-114)资金资助

摘　　要：油藏数值模拟结果受岩石物性参数的影响,岩石压缩系数是影响数值模拟结果的参数之一。利用Hall图版和理论公式2种方法确定岩石的压缩系数,并研究不同确定方法对油藏数值模拟结果的影响。研究表明,Hall图版高估了岩石的弹性能量,用其数值进行油藏数值模拟计算时,油藏压力的下降速度明显变慢。由于理论公式计算的岩石压缩系数远小于地层流体的压缩系数,油藏数值模拟计算中可将其忽略。The result of reservoir numerical simulation is affected by petrophysical parameters.Rock compressibility is one of the parameters affecting the result of numerical simulation.In this study,rock compressibility is determined by two methods:Hall chart and theoretical formula.The effect of different method on numerical simulation is studied.The study shows that Hall chart overestimates the elastic energy of rock,and reservoir pressure declines much slower when calculating with Hall chart.Rock compressibility calculated with theoretical formula is much smaller than the compressibility of reservoir fluid,therefore can be neglected in numerical simulation.

关 键 词：岩石压缩系数 数值模拟 地层压力 弹性能量 

分 类 号：TE319[石油与天然气工程—油气田开发工程]