Methods for determining dielectric permittivity spectrum of underground rock formations

摘要

A method for determining the frequency-dependent dielectric permittivity spectrum of a rock sample, comprising:
- defining a series of electromagnetic measurement data comprising at least a first measurement at a frequency from which a substantially frequency-independent value of dielectric permittivity µ ˆž can be obtained; and at least second and third measurements at different frequencies from which values for frequency-dependent dielectric permittivity µ rock ( f ) can be obtained; and
- using the first, second and third measurements to determine the frequency-dependent spectrum of the sample.