Modeling low-frequency electrode-type resistivity tools in invaded thin beds

Author

Liu, Qing-Huo ; Anderson, Barbara ; Chew, Weng Cho

Author_Institution

Schlumberger-Doll Res., Ridgefield, CT, USA

Volume

32

Issue

3

fYear

1994

fDate

5/1/1994 12:00:00 AM

Firstpage

494

Lastpage

498

Abstract

The authors formulate and implement a numerical mode-matching (NMM) method to model electrode-type resistivity tools in invaded thin beds. The authors derive the low-frequency approximation of the Maxwell´s equations to obtain the partial differential equation for the potential field. The new NMM program is validated by comparing the numerical results with those obtained from other dc programs. It is found that this new program is much faster than the program using the finite-element method (FEM), and hence is useful for routine interpretation of resistivity logs and for inversion

Keywords

electric resistance measurement; geophysical prospecting; geophysical techniques; inverse problems; numerical analysis; terrestrial electricity; EM induction; Maxwell´s equations; electrical resistivity; geoelectric; geophysical measurement technique; invaded thin bed; inverse method; inversion; layered medium; low frequency electrode type resistivity tool; low-frequency approximation; model; numerical mode matching method; partial differential equation; potential field; prospecting method; resistivity log; terrestrial electricity; well logging; Conductivity; Electromagnetic measurements; Finite element methods; Frequency; Maxwell equations; Nonhomogeneous media; Nonuniform electric fields; Partial differential equations; Probes; Well logging;

fLanguage

English

Journal_Title

Geoscience and Remote Sensing, IEEE Transactions on

Publisher

ieee

ISSN

0196-2892

Type

jour

DOI

10.1109/36.297967

Filename

297967