Numerical Calculation and Analysis of Magnetic Source Transient Electromagnetic Field in Stratum Medium

DOI

10.2991/cmfe-15.2015.160How to use a DOI?

Keywords

surface-hole TEM; magnetic dipole source; layered medium; half-space of homogeneous

Abstract

The electromagnetic component expressions of transient electromagnetic field in formation media for ground magnetic dipole are derived based on electromagnetic field theory. Fast Hankel transform and the Gaver-Stehfest inverse Laplace transform method is used for forward numerical calculation of transient electromagnetic field in a uniform earth and layered medium. The regularity and characteristics of surface-hole transient electromagnetic method response was analyzed base on forward simulations in different conditions. The result shows that, the surface-hole TEM magnetic induction response sign change occur if borehole located farther offset distance, the status of sign-change would alter in different time channel and different offset distance conditions, the induced electromotive force response can directly reflect the changes of induced eddy current field in formation medium, there is obvious difference in the electromagnetic response strength and attenuation characteristics for different electrical formation media, the difference can be used as the basis of inference layered ground dielectric structure.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Qingxin Meng
AU  - Zujian Liu
PY  - 2015/07
DA  - 2015/07
TI  - Numerical Calculation and Analysis of Magnetic Source Transient Electromagnetic Field in Stratum Medium
BT  - Proceedings of the International Conference on Chemical, Material and Food Engineering
PB  - Atlantis Press
SP  - 677
EP  - 680
SN  - 2352-5401
UR  - https://doi.org/10.2991/cmfe-15.2015.160
DO  - 10.2991/cmfe-15.2015.160
ID  - Meng2015/07
ER  -