基于碎屑岩孔隙结构特征参数的渗透率计算方法研究

On Calculation Method of Permeability Based on Clastic Charactoristic Parameters of Pore Structure

应用扫描电镜对岩石的孔隙类型、泥质矿物成份及分布方式进行分析和分类,依据资料按毛细管理论计算孔隙结构参数,并在此基础上分4类建立了渗透率的计算模型,确定致密砂岩储层的渗透率与孔隙度、孔隙类型、泥质含量、泥质成份及分布方式等因素有关,并利用实际测井资料验证了研究方法的有效性。

A scanning electric microscope is used to analyze and classify the pore types and clay mineral constituents,according to the experimental data,the pore structure parameters are calculated based on capillary theory.And on this basis,it is classified into four types to set up permeability calculation models,it is determined that the tight sand reservoir's permeability is related with the porosity,pore types,shale content,shale component and shale distribution.The actual logging data are used to demonstrate the effectiveness of the experimental research.