裂缝-孔隙双孔介质的双侧向测井解释方法初探  

Investigation on Interpreting Dual Laterolog Responses in Fractured-porous Media

作　　者：邓少贵[1] 卢春利[1] 

机构地区：[1]中国石油大学,山东青岛266555

出　　处：《测井技术》2010年第6期537-541,共5页Well Logging Technology

基　　金：国家科技重大专项(2008ZX05035-02);山东省自然科学基金(Y2007F25);中央高校基本科研业务费专项资金资助(09CX04001A)

摘　　要：根据裂缝和基块孔隙不同的组合方式,建立裂缝-孔隙型介质宏观导电模型;利用三维有限元方法研究其双侧向测井响应特征;双侧向测井响应的快速计算方法用于裂缝参数的快速解释。双侧向测井响应决定于裂缝孔隙度、裂缝倾角、基块电导率或是基块孔隙度及孔隙流体性质;双侧向视电导率随裂缝孔隙度线性增长,其斜率取决于裂缝倾角的大小,并与基块电导率有关。建立双侧向的快速计算模型,提高了双侧向测井反演地层参数的速度。将该方法同岩石物理实验相结合,有助于裂缝-孔隙双孔介质油气藏的测井评价。Fractures and pores are mainly storage space in the fractured-porous reservoir.The pores of block are the primary storage space of fluid and the fractures are the flow channels.A macro-conductive model is built for the fractured-porous reservoir based on the different combination of fractures and block pores.Then the 3D finite element method is used to simulate the responses of dual laterolog in the fractured-porous reservoir.Accordingly,a fast computation method of dual laterolog responses in fractured-porous reservoir is built to interprete fracture parameters.It shows that the responses of dual laterolog are depended on the fracture porosity,fracture dip and block conductivity/or the block porosity and its pore fluid.The apparent conductivity of dual laterolog is linear to the fracture porosity,and the slope is dependent on the fracture dip and related to the block conductivity too.The fast computation method of dual laterolog enhances the speed of inversion of dual laterolog for determination of reservoir parameters.Combination of the inversion of dual laterolog and lab experiments of petrophysical properties is helpful to the evaluation of fractured-porous reservoir.

关 键 词：双侧向测井 裂缝-孔隙型 储集层 孔隙介质 快速计算 反演 

分 类 号：P631.322[天文地球—地质矿产勘探]