Physics – Geophysics
Scientific paper
Mar 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004georl..3105609d&link_type=abstract
Geophysical Research Letters, Volume 31, Issue 5, CiteID L05609
Physics
Geophysics
2
Exploration Geophysics: Magnetic And Electrical Methods, Hydrology: Unsaturated Zone, Mathematical Geophysics: Modeling, Mineral Physics: Electrical Properties, Physical Properties Of Rocks: Magnetic And Electrical Properties
Scientific paper
This paper presents a novel pore-scale approach for the derivation of electrical properties of porous media. In this approach we create a digital porous medium on the basis of experimental grain-size distribution data and apply a drainage simulator based on pore-morphology analysis. Then we simulate via finite difference discretization the electrical charge flow within the two-fluid and solid pore-scale distributions, and derive the effective resistivity of the porous medium. Simulation results have been compared with resistivity data from a UK Permo-Triassic Sandstone (Sherwood S.). Agreement between measured and simulated bulk conductivities at different saturation values is excellent; this confirms the validity of the adopted approach, and its underlying assumptions.
Brovelli A.
Cassiani G.
Dalla E.
Pitea D.
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