测井技术2013，Vol.37Issue(2)：128-131,4.
基于岩心核磁共振实验数据确定阳离子交换容量
Qv Determination Based on NMR Testing Data
摘要
Abstract
Based on the HSK equation,a calculation method of cation exchange capacity (Qv) is proposed based on NMR test data.Compared with wet chemistry cation exchange capacity tests (CEC),there is a certain error.12 rock samples data show the relative error range is from 12％ to 95％ and the average relative error is 55％.To understand the impact factors of Qv determination based on NMR test data,the researches are carried out on solution salinity,NMR total porosity and clay bound water T2 cutoff values.The above results show that clay bound water T2 cutoff value is the key effect factor for accurately calculating Qv,its value is variable,rather than 3 ms as traditional understanding.The premise of accurately calculating Qv based on NMR testing data is to accurately calculate the clay bound water T2 cutoff value.关键词
核磁共振测井/阳离子交换容量/黏土束缚水/T2截止值/弛豫时间/实验研究Key words
NMR logging/cation exchange capacity/clay bound water/T2 cutoff value/relaxation time/experimental study分类
天文与地球科学引用本文复制引用
张冲,张占松,宋秋强..基于岩心核磁共振实验数据确定阳离子交换容量[J].测井技术,2013,37(2):128-131,4.基金项目
国家科技重大专项课题子课题(2011ZX05030-004-004) （2011ZX05030-004-004）
