用核磁共振T_2分布定量求取孔隙结构参数的区域性对比研究  

Regional Comparison of Pore Stractural Parameters Quantitatively Derived with T_2 Distribution of NMR

作　　者：唐小梅[1] 何宗斌[1] 张超谟[1] 李军[1] 

机构地区：[1]江汉石油学院地球物理系,湖北荆州434023

出　　处：《江汉石油学院学报》2003年第4期75-77,共3页Journal of Jianghan Petroleum Institute

基　　金：国家重点基础研究发展项目(2001CB209100)。

摘　　要：核磁共振测井横向弛豫时间(T2)分布能够很好地反映孔隙结构信息,而且测井信息具有纵向连续性,所以研究核磁共振T2分布与孔隙结构参数之间的定量关系有其可行性和必要性。用两个地区的核磁共振T2分布对孔隙结构进行定量研究,借助相应的压汞测试资料对比分析,找到与核磁共振测井中的T2几何平均值相关性好的孔隙结构参数,并确定它们之间的定量关系式,寻找核磁共振T2分布与孔隙结构参数之间的定量关系的区域性差别。NMR lateral relaxation time ( T2 ) distribution can integrally reflect pore structural information, and logging information has vertical continuity, so there is a possibility and a necessity for studying the quantitative correlations between NMR T2 distribution and pore structural parameters, a quantitative study is performed on the pore structure by using NMR T2 distribution from 2 regions. With the help of comparison of corresponding mercury injection data, the pore structural parameters that correlate with NMR T2 geometric mean value are obtained, and quantitative-relational expression between them is established, regional difference of the quantitative relations between NMR Tz distribution and the pore structure is determined.

关 键 词：核磁共振测井 核磁共振T2分布 孔隙结构 参数 区域性对比 

分 类 号：P631.81[天文地球—地质矿产勘探]