Summary
The sensitivity of seismic velocities and acoustic impedance to the changes in reservoir conditions is prominent in the case of small dry elastic moduli. Porosity itself has a negative effect on feasibility, but it strongly affects dry elastic moduli. For normally consolidated clean sandstones, reservoirs can be monitored seismically for water drive as deep as 500m. In geopressured zones, 4-D seismic surveys can target 6500 m deep if seismic data quality is fair.
Introduction
Recent examples of 4-D seismic surveys (Jack, 1998; Sonneland et al., 1997) have demonstrated potential for inferring reservoir conditions from seismic data.
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2000. Society of Exploration Geophysicists
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