Surface-borehole electric potential survey in layered media and its applications

Ben Yu Su, Yasuhiro Fujimitsu, Jian Yong Song

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The method in which a source is set on the surface and electric potential is received in the borehole is called surface-borehole electric potential technique. Technique of surface-borehole electric potential was employed to study electric response of layered formation. The electric potential was obtained by solving Poisson equation with finite difference method. In the course of calculation, forward modeling with finite difference method was realized by adopting bandwidth non-zero storage technique and the incomplete Cholesky conjugate gradient method. The results show that method of surface-borehole can acquire anomalous electric potential corresponding to geo-electric layers. In addition, application of appropriate mathematical operator can improve the resolution. Moreover, overburden low resistivity layers have severe influence on measuring results of surface-borehole electric potential. However, bottom low resistivity layers play a positive role in the measurement.

Original languageEnglish
Pages (from-to)1109-1115
Number of pages7
JournalJournal of Central South University of Technology (English Edition)
Volume19
Issue number4
DOIs
Publication statusPublished - Apr 1 2012

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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