摘要
在用有限元法作电阻率反演计算中，求Ｆｒéｃｈｅｔ导数很重要。本文采用２．５维有限元法，对井间电阻率成像中的二极（ＡＭ）装置，分别用标准方法，格林函数法和扰动法计算了Ｆｒéｃｈｅｔ导数数值解。
It is very important to calculate Fréchet derivatives in solving resistivity inverse problem. In this paper, 2.5-D FEM is used for calculating Fréchet derivatives in the crosshole resistivity image and three kinds of calculating techniques, namely, standard method, Green function method and perturbation approach are presented respectively. Lastly, their characteristics are compared.
出处
《物探化探计算技术》
CAS
CSCD
1997年第1期41-45,共5页
Computing Techniques For Geophysical and Geochemical Exploration
关键词
有限元
Frechet导数
电测井
井间电阻率
finite element method, Fréchet derivative, Green function method, perturbation approach
