利用高频电磁波测井反演地层介电常数和电阻率  

AN INVERSION OF DIELECTRIC CONSTANT AND RESISTIVITY BY USING HIGH FREQUENCY ELECTROMAGNETIC WAVE LOGGING

作　　者：邢光龙[1] 张美玲[1] 刘曼芬[1] 杨善德[1] 

机构地区：[1]吉林大学物理系,长春130023

出　　处：《地球物理学报》2002年第3期435-443,共9页Chinese Journal of Geophysics

基　　金：国家自然科学基金资助项目 (4 97742 41 )

摘　　要：高频电磁波测井响应对地层纵向边界相当敏感 ,在其资料反演中必须重视地层纵向边界位置的提取和反演精度 .首先应用特征识别技术由测井曲线提取地层参数 ,在此基础上建立反演初始地层模型 ,通过分别构造反演地层电参数和纵向边界位置的目标函数 ,采用改进的阻尼型高斯 -牛顿算法 ,实现了对地层电参数和纵向边界位置的交替循环反演 .对含1 7个水平分层的典型地层模型的模拟测井资料进行反演计算 ,测井响应的反演精度达到2 .0 % (平均相对误差 ) ,电参数的误差为 4.4% .The high frequency electromagnetic wave logging's response is sensitive to the layers' boundary. Much attention should be paied to the precision of geometrical boundary parameters. This paper firstly gives the formation parameters by a pattern recognition technique,then initial inversion models are built up. By reconstructing the inversion objective functions of electric parameters and the geometrical boundary,this paper carried out the alternative inversion of the electric parameters and the geometrical boundary parameters by using an improved damping form of Gauss Newton method. The inversion result is obtained for the representative model with 17 horizontal layers,the inversion precision of logging response curves is up to 2.0% (average relative error),also the precision of electric parameters is up to 4.4%.

关 键 词：高频电磁波测井 反演 阻尼矩阵 电参数 边界位置 交替循环反演 电阻率 介电常数 

分 类 号：P631.8[天文地球—地质矿产勘探]