摘要
混合法是近年来计算电阻率测井响应的有效方法,该方法是一种半解析、半数值解法,在轴对称多层介质中,一般采用径向数值、纵向解析的方法;纵向解析时采用反射阵和透射阵理论。笔者利用地层界面电磁场的连续性条件,对纵向解析部分进行了改进,推导出了相邻层之间上行波和下行波的递推关系,并用同一电极系和地层模型进行了计算,其结果与原方法和FEM方法的计算结果是一致的。
The hybrid method has been an effective technique for numerical stimulation of electrical logs in recent years, and is an integrated partially numerical and partial analytical technology, Recurring to the continuity conditions of the electromagnetic field, the new hybrid method probes into numerical stimulation of resistivity logs, brings forward transformation formulas on the interface of two adjacent layers rather than using the reflection and transmission matrix theory in the analytical section, and calculates the normal resistivity log response in a simple formation model. The new method proves to be highly precise compared with the finite element method （FEM） and the previous hybrid method.
出处
《物探与化探》
CAS
CSCD
2006年第1期75-78,共4页
Geophysical and Geochemical Exploration
基金
中国石油大学博士生创新基金资助(B2005-01)
关键词
电阻率测井
数值模拟
递推关系
混合法
resistivity log
numerical simulation
recursion formulas
hybrid method
