Low frequency attenuation in a saturated rock

High porosity zones bearing reservoir fluids are often interbedded with relatively impermeable lithologies. Fluids in the pores and fractures in the reservoir significantly affect the acoustic bulk characteristics, which are delineated from surface seismics, vertical seismic profiling, cross-well tomography, and sonic logging. The detected waves contain information about the rock along the wave path and the objective of all techniques is to extract this information in terms of geological structures and rock/fluid properties.