Electromagnetic well logging based on borehoel radar

Sixin Liu, Motoyuki Sato

Research output: Contribution to conferencePaperpeer-review

3 Citations (Scopus)


This paper introduces a novel electromagnetic (EM) logging technique based on borehole radar. The tool consists of one transmitter and two receivers, which can be used to cancel the effect of the antenna characteristics by taking the ratio of two receiver signals. Since receivers signals measured in the time domain can be converted into the frequency domain by Fourier transformation, the amplitude ratio and the phase difference between two receiver signals in wide frequency band are obtainable. The algorithm which converts the amplitude and the phase information into the conductivity and the relative permittivity of the surrounding medium is given by three-dimensional finite difference time domain (FDTD), where the borehole environment is taken into account. The effect of the borehole parameters on measurement and the response of the tool to a oil-water interfaces are simulated and analyzed numerically. The validity of this technique is confirmed by experiment. This technique can be applied to detect the formation conductivity and relative permittivity simultaneously. The locations of the fractures intersecting the borehole is detected.

Original languageEnglish
Publication statusPublished - 2002 Jan 1
EventSPWLA 43rd Annual Logging Symposium 2002 - Oiso, Japan
Duration: 2002 Jun 22002 Jun 5


OtherSPWLA 43rd Annual Logging Symposium 2002

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Energy Engineering and Power Technology


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