A Petroelastic-Based Approach to Pressure and Saturation Estimation Using 4D Seismic

A042 A petroelastic-based approach to pressure and saturation estimation using 4D seismic Abstract 1 A methodology is developed to invert for time-lapse variations of reservoir pressure and saturation from repeated P-wave seismic data. Based on a simplified petroelastic correlation two independent elastic parameters are obtained; one of which depends on pressure and the other on saturation. Forms for reflectivity and elastic impedance explicitly dependent on production effects are derived and tested on a reservoir model-based study. Following the inversion of multi-angle near mid and far elastic impedance stacks from the baseline and repeat seismic dataset reliable dynamic estimates of pore