Joint elastic-electrical properties of reservoir sandstones and their relationships with petrophysical parameters
Han, Tongcheng, Best, Angus I., Sothcott, Jeremy and MacGregor, Lucy M. (2011) Joint elastic-electrical properties of reservoir sandstones and their relationships with petrophysical parameters. Geophysical Prospecting, 59, (3), 518-535. (doi:10.1111/j.1365-2478.2010.00940.x).
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We measured in the laboratory ultrasonic compressional and shear-wave velocity and attenuation (0.7–1.0 MHz) and low-frequency (2 Hz) electrical resistivity on 63 sandstone samples with a wide range of petrophysical properties to study the influence of reservoir porosity, permeability and clay content on the joint elastic-electrical properties of reservoir sandstones. P- and S-wave velocities were found to be linearly correlated with apparent electrical formation factor on a semi-logarithmic scale for both clean and clay-rich sandstones; P- and S-wave attenuations showed a bell-shaped correlation (partial for S-waves) with apparent electrical formation factor. The joint elastic-electrical properties provide a way to discriminate between sandstones with similar porosities but with different clay contents. The laboratory results can be used to estimate sandstone reservoir permeability from seismic velocity and apparent formation factor obtained from co-located seismic and controlled source electromagnetic surveys.
|Keywords:||Joint elastic-electrical properties; Petrophysical properties; Reservoir sandstones|
|Subjects:||Q Science > QE Geology|
|Divisions:||University Structure - Pre August 2011 > National Oceanography Centre (NERC)
University Structure - Pre August 2011 > School of Ocean & Earth Science (SOC/SOES)
National Oceanography Centre (NERC) > Marine Geoscience
|Date Deposited:||27 Apr 2011 13:40|
|Last Modified:||27 Mar 2014 19:38|
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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