Inductive conductivity tensor measurement for flowline or material samples

Kickhofel, John L.; Mohamide, Amine; Jalfin, Jonatan; Gibson, Joshua; Thomas, Philip; Minerbo, Gerald; Wang, Hanming; Homan, Dean M.
July 2010
Review of Scientific Instruments;Jul2010, Vol. 81 Issue 7, p075102
Academic Journal
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.


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