Abstract

Huang and Shen presented an interesting paper pointing out a correction due to the presence of unavoidable gaps between the sample and sample holder (coaxial line) on the measurement of dielectric constant and conductivity of core rock samples. Huang and Shen's following statement on p. 206 is misleading: "Thus low-frequency tools for measuring the electric properties of a formation can measure the conductivity accurately but not the dielectric constant." At low frequency below 10 MHz, displacement current is almost negligible for most of the Earth's materials. Therefore, the question of the dielectric constant with the low-frequency tools does not arise.

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