The MIIS Eprints Archive

Formation Response of High Frequency Electromagnetic Waves

Hadj-Sassi, K. and Clawson, R. (2011) Formation Response of High Frequency Electromagnetic Waves. [Study Group Report]



Core samples from rock formations respond to electromagnetic radiation based on an effective permittivity, which depends on the conductivity and permittivity of the constituent components of the rock, as well as the geometric structure of these constituents and the frequency of the radiation. This study analyzes the effect, for radiation of 1 to 100 Mhz, of discrete inclusions having a different permittivity from the surrounding medium. The focus is on the effect of certain geometric features, namely, the individual size of the inclusions, their overall volume fraction, the presence of sharp edges, and their aspect ratio.

It is found that the volume fraction has the strongest impact on the effective permittivity, linear at first but higher order at higher volume fractions. The aspect ratio of the inclusions has a moderate effect, which is exaggerated in the extreme case of needle-like inclusions, and which can also be seen in a stronger nonlinearity. There is also a possibility that some features in the shape of the inclusion boundaries may influence the frequency dependence of the effective permittivity. Inclusion size and sharp edges have negligible effect.

Item Type:Study Group Report
Problem Sectors:Energy and utilities
Study Groups:KAUST Study Groups > 1st KSG (Thuwal, Saudi Arabia, Jan 23-26, 2011)
Company Name:Schlumberger Carbonate Research Dhahran
ID Code:351
Deposited By: Dr Kamel Bentahar
Deposited On:29 Jul 2011 13:53
Last Modified:29 May 2015 19:58

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