会议专题

1D EM responses of borehole-surface method in frequency-domain

Borehole-surface electromagnetic (BSEM) method is an earth exploration method by means of measuring the EM response on the earth surface excited by a Vertical Linear Current Source with Finite Length (VLCSFL) in borehole to inferring the construction in subsurface. In this paper, the forward formula of BSEM in frequency-domain in a stratified medium of n, homogenous conducting layers is derived, and the electromagnetic fields are obtained by integrating the time-harmonic response of the vertical electric dipole (VED) whose analysis formula is derived using Hankel transformation and the coefficient recursion relations solved from a linear equations obtained from the tangential component continuity. Finally, the BSEM responses of a stratified medium for different frequency, different length and different buried depth of VLCSFL respectively, and the variation characters of the response curves are analyzed.

Borehole-surface electromagnetic method linear current source with finite length frequency domain forward vertical electric dipole

Lifeng Mao Xuben Wang

Chengdu University of technology, Chengdu, 610059

国际会议

The 4th International Conference on Environmental and Engineering Geophysics(第四届环境与工程地球物理国际会议 ICEEG2010)

成都

英文

360-364

2010-06-14(万方平台首次上网日期,不代表论文的发表时间)