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Review of Scientific Instruments / Volume 81 / Issue 7 / ARTICLES / General Instruments

Rev. Sci. Instrum. 81, 075102 (2010); http://dx.doi.org/10.1063/1.3449320 (9 pages)

Inductive conductivity tensor measurement for flowline or material samples

John L. Kickhofel1, Amine Mohamide1, Jonatan Jalfin1, Joshua Gibson1, Philip Thomas1, Gerald Minerbo1, Hanming Wang2, and Dean M. Homan1

1Schlumberger Oilfield Services, Sugar Land Product Center, 110 Schlumberger Drive, Sugar Land, Texas 77478, USA
2Chevron Corporation, 1400 Smith Street, Houston, Texas 77002-7327, USA

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(Received 21 March 2010; accepted 1 May 2010; published online 2 July 2010)

Present-day galvanic-based electrical conductivity measurements are hampered by limitations and necessary corrections, especially in the domain of geological core analysis. Low-accuracy techniques such as crucible, two-electrode, and four-electrode are constricted by current-path requirements, while high-accuracy techniques are time consuming and have limited domains of applicability. We present a novel apparatus capable of electrical conductivity tensor measurements in a noninvasive, noncontact, inductive manner with resolution from 5 mS/m. Inspired by the triaxial induction logging technology appearing in the oil patch today, our apparatus is naturally applicable in a novel way not only to anisotropic geological core analysis but also to arbitrary material samples and flowline systems.

© 2010 American Institute of Physics

Article Outline

  1. INTRODUCTION
  2. APPARATUS
    1. Theory
    2. Design
    3. Setup
  3. CALIBRATION
  4. RESULTS
  5. CONCLUSION

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KEYWORDS and PACS

Keywords

electric current measurement, electrical conductivity, geophysical techniques

PACS

  • 84.37.+q

    Measurements in electric variables (including voltage, current, resistance, capacitance, inductance, impedance, and admittance, etc.)

  • 93.85.-q

    Instruments and techniques for geophysical research: Exploration geophysics

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3449320

PUBLICATION DATA

ISSN

0034-6748 (print)  
1089-7623 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
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