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Seismic wave attenuation and dispersion resulting from wave-induced flow in porous rocks — A review
One major cause of elastic wave attenuation in heterogeneous porous media is wave-induced flow of the pore fluid between heterogeneities of various scales. It is believed that for frequencies below 1Expand
A model for P-wave attenuation and dispersion in a porous medium permeated by aligned fractures
SUMMARY Fractures in a porous rock can be modelled as very thin and highly porous layers in a porous background. First, a dispersion equation for a P wave propagating in periodically layeredExpand
A simple model for squirt-flow dispersion and attenuation in fluid-saturated granular rocks.
A major cause of seismic attenuation in fluid-saturated rocks is the flow of the pore fluid induced by the passing wave. At sonic and ultrasonic frequencies, attenuation appears to be dominated byExpand
Brain neuroprotection by scavenging blood glutamate
It is concluded that blood glutamate scavenging affords brain neuroprotection in a pathological situation such as closed head injury (CHI), and may open now new therapeutic options. Expand
Comparative review of theoretical models for elastic wave attenuation and dispersion in partially saturated rocks
Abstract Saturation of porous rocks with a mixture of two fluids (known as partial saturation) has a substantial effect on the seismic waves propagating through these rocks. In particular, partialExpand
Seismic attenuation due to wave-induced fluid flow in a porous rock with spherical heterogeneities
SUMMARY Most natural porous rocks have heterogeneities at nearly all scales. Heterogeneities of mesoscopic scale—that is, much larger than the pore size but much smaller than wavelength—can causeExpand
A semi-empirical velocity-porosity-clay model for petrophysical interpretation of P- and S-velocities
We design a velocity–porosity model for sand-shale environments with the emphasis on its application to petrophysical interpretation of compressional and shear velocities. In order to achieve thisExpand
One‐dimensional random patchy saturation model for velocity and attenuation in porous rocks
Porous rocks encountered in hydrocarbon reservoirs are often saturated with a mixture of two or more fluids. Generation of synthetic seismograms as well as interpretation of in-situ attenuationExpand
Fluid substitution in shaley sediment using effective porosity
The traditional method of fluid substitution in porous rock requires the total porosity and the elastic modulus of the mineral phase as input and assumes that the fluid reaches instantaneousExpand