AB-s方式瞬变电磁测深资料处理方法研究  

Study of processing method for transient electromagnetic data by AB-s configuration.

作　　者：苏朱刘[1] 胡文宝[2] 

机构地区：[1]中国地质大学 [2]CNPC物探重点实验室江汉石油学院研究室

出　　处：《石油地球物理勘探》2002年第3期262-266,286,共6页Oil Geophysical Prospecting

基　　金：中国石油天然气集团公司科技局"九五"重点攻关资助项目 (编号 970 10 2 -0 1)

摘　　要：苏朱刘 ,胡文宝 .AB- s方式瞬变电磁测深资料处理方法研究 .石油地球物理勘探 ,2 0 0 2 ,37(3) :2 6 2～ 2 6 6 ,2 86　　根据半无限均匀介质空间中场的表达式 ,介绍了一维层状介质情况下 AB- s方式瞬变电磁测深法的全区视电阻率定义的基本性质 ,并讨论了求解方法。特别地 ,本文引入了基于感应电动势的“虚拟全区视电阻率”概念 ,从而解决了全区视电阻率解的唯一性和存在性等问题。“虚拟全区视电阻率”能较连续和直观地反映地下一维电性层电性垂向变化特征 ,对瞬变电磁测深资料的定性解释具有重要意义 ,同时也为一维反演 (构制初始模型和确立目标函数 )奠定了基础。According to expression of field in half infinite homogeneous media,the paper introduced the basic characters defined by all time apparent resistivity of transient electromagnetic method(TEM) for several AB s configuration,and discussed solving methods.Especially,the paper introduced a concept of 'pseudo all time apparent resistivity'based on inductive electromotive force so that solved the problems such as uniqueness and existence of the solution of pseudo all time apparent resistivity.The pseudo all time apparent resistivity can better continuously and straightforwardly reflect the vertical conductive variation character of 1 D conducting layer,which has an important meaning for qualitative interpretation of transient electromagnetic data and lays the foundation for 1 D inversion(construction of initial model and definition of objective function).

关 键 词：AB-s方式 瞬变电磁测深 资料处理方法 研究 全区视电阻率 Bostick反演法 正演搜索逼近法 

分 类 号：P631.84[天文地球—地质矿产勘探] P631.813[天文地球—地质学]