油气地质与采收率2011，Vol.18Issue(5)：63-66,4.
非均质油藏开发规律研究
摘要
Abstract
The Lorenz curve has been used to evaluate the heterogeneity of reservoir. The permeability distributions of different heterogeneous reservoirs with a uniform permeability mean value are obtained by calculating the Lorenz curve inversely. A typical geological model is established herein. Numerical simulation has been performed to study the development rule of heterogeneous reservoir. It has been revealed that when the variation coefficient is smaller than 0.2, the reservoir can be regarded as homogeneity. Water is channeling in high permeable layers, and there exists consistency between permeability profile and water-cur profile. The water-cut profile of inverted rhythm reservoir is more uniform than positive rhythm reservoir. There exists a modified logistic function between ultimate recovery and variation coefficient for positive rhythm reservoir. The ultimate oil recovery decreases slightly as the permeability variation coefficient increases up to 0.4, and then decreases rapidly. There exists an algebraic equation between water cut and producing degree of recoverable reserves. The oil recovery of inverted rhythm reservoir is higher than positive rhythm reservoir, and the increasing velocity of water-cut for positive rhythm reservoir is always faster than anti-rhythm reservoir, and the difference is more obvious for medium heterogeneous reservoir.关键词
非均质油藏/渗透率变异系数/开发规律/数值模拟/洛伦兹曲线Key words
heterogeneous reservoir/permeability variation coefficient/development rule/numerical simulation/Lorenz curve分类
能源科技引用本文复制引用
王增林,王敬,刘慧卿,王辉..非均质油藏开发规律研究[J].油气地质与采收率,2011,18(5):63-66,4.基金项目
国家科技重大专项"高温高盐油藏化学驱油藏模拟关键技术"(2008ZX05011). （2008ZX05011）
