新型混合泥质砂岩通用双电层电导率模型  

New generalized electric double layer conductivity model for laminated and dispersed shaly sands

作　　者：宋延杰[1] 邢丽波[1] 

机构地区：[1]大庆石油学院地球科学学院,黑龙江大庆163318

出　　处：《大庆石油学院学报》2005年第6期7-10,16,共5页Journal of Daqing Petroleum Institute

基　　金：黑龙江省自然科学基金项目(TE2005-24)

摘　　要：基于层状泥质与分散泥质砂岩并联导电的理论,以及新的分散泥质砂岩双电层电导率模型,建立了分散泥质和层状泥质同时存在的混合泥质砂岩通用双电层电导率模型;分析了影响模型的因素.结果表明:泥质分布形式对由模型计算的总含水饱和度影响大;随总含水饱和度的增大,阳离子交换容量和胶结指数以及因数b对混合泥质砂岩电导率与总含水饱和度的关系曲线的影响增大.应用该模型计算的结果与2组分散泥质砂岩岩样实验测量数据和1组层状泥质砂岩测井资料的对比,表明该模型既适用于分散泥质砂岩地层解释,又适用于层状泥质砂岩地层解释.Based on the parallel conductance between laminated shale and dispersed shaly sand,and new electric double layer conductivity model for dispersed shaly sand,then a new generalized electric double layer conductivity model is proposed for laminated and dispersed shaly sand interpretation.This model shows that,shale distribution largely affects total water saturation calculations.The curves between total formation conductivity and total water saturation are affected by cation exchange concentration,cementation exponent and coefficient,and the effect increases as total water saturation increases.Rock sample data in dispersed shaly sands and well logging data in laminated shaly sands show that the model may be applied not only to dispersed shaly sands but also to laminated shaly sands.

关 键 词：泥质砂岩 分散泥质 层状泥质 含水饱和度 双电层 电导率 

分 类 号：TE122.2[石油与天然气工程—油气勘探]