Time-Lapsed Seismic Wavefield Monitoring of Downhole Formations

Abstract

A time-lapse seismic wavefield monitoring system for a formation includes at least one seismic wavefield source and at least one seismic wavefield sensor to collect seismic wavefield survey data corresponding to the formation in response to an emission from the at least one seismic wavefield source. The seismic wavefield survey data includes first seismic wavefield data collected at a first time and second seismic wavefield data collected at a second time. The time-lapse seismic wavefield monitoring system also includes a processing unit in communication with the at least one seismic wavefield sensor. The processing unit determines time-lapsed seismic wavefield data based on the first seismic wavefield data and the second seismic wavefield data, and performs an analysis of the time-lapsed seismic wavefield data to determine an attribute change in an earth model.

Dependencies are inferred from the claim text.