测井技术2018，Vol.42Issue(1)：14-19,6.DOI:10.16489/j.issn.1004-1338.2018.01.003
泥质砂岩平衡阳离子当量电导计算新方法
New Method for Calculating Equivalent Conductance of Clay Counterions in Shaly Sand
摘要
Abstract
T he equivalent conductance of the clay counterions(B)is a key parameter in the W-S model for calculating saturation of shaly sand.The experimental chart of B was firstly proposed by Waxman and Tomas in 1974.In addition,the revised experimental chart of B was put forward by Waxman and Tomas in 2007.However,Chinese scholars still use the old chart of B.Based on the simply introduction of W-S model,the old and new charts of B is compared.T he comparison of the two charts of B shows that the new and old chart are same at the temperature 25 ℃,but different in Bmaxwith temperature greater than 25 ℃.With low concentration and high resistivity of formation water,the values of the old and new chart of B are different.The conductivity of shaly sand calculated by the new chart of B shows a better consistent with experimental result than that calculated by old chart of B,w hich demonstrates that the new chart of B is reliable. Based on the new chart of B,a new method for calculating equivalent conductance of the clay counterions(B)in shaly sand is proposed.Case study shows that the water saturation calculated by new B is more accurate than that by old B,as water saturation calculated by new B better matches well with the core analyzed result.关键词
测井解释/泥质砂岩/储层/平衡阳离子/当量电导/饱和度/W-S模型Key words
log interpretation/shaly sand/reservoir/equivalent conductance/clay counterions/saturation/W-S model分类
天文与地球科学引用本文复制引用
高秦群,王亮,孟凡..泥质砂岩平衡阳离子当量电导计算新方法[J].测井技术,2018,42(1):14-19,6.基金项目
国家自然基金项目页岩气储层微观孔隙结构连续定量表征与含气量评价(41504108) （41504108）
国土资源部沉积盆地与油气资源重点实验室开放性基金项目页岩气储层含气量评价(Zdsys2015003) （Zdsys2015003）
四川省教育厅自然科学类基金项目页岩气储层微观孔隙结构实验表征及连续定量评价方法(15ZB0057) （15ZB0057）
中国博士后科学基金面上资助"多因素耦合作用下的致密油储层孔隙结构与含油性评价"(2015M582568) （2015M582568）
