f Rockphysics basis for geophysical reservoir monitoring

Because of the increasing importance of oil recovery, the growing complexity of recently discovered oil fields, and the growing realization that reservoirs and recovery are more heterogeneous than assumed in the past, a major shift in the use of seismic methods has taken place during the past decade. One of the central aspects of this shift involves the need to better understand the relation between the seismic properties of reservoir and reservoir related rocks, and their production properties (porosity, permeability) and state (mineralogy, saturation, pore pressure, etc.). Some obvious applications are the evaluation of stratigraphic traps, fracture detection, and the spatial distribution of porosity and permeability.