SEGJ Technical Conference

Seismic imaging of time lapse for CCS and oil and gas reservoirs using ultra-stable seismic ACROSS source

Abstract We propose a seismological technology for the 4D survey to monitor any changes in oil-gas reservoirs and CCS. We use an extremely stable seismic system, ACROSS, Accurately Controlled and Routinely Operated Signal System, to perform continuous monitor of them. The seismic ACROSS source is non-destructive seismic source, which can be used to continuously monitor a change of target zone. We present the result of seismic wave simulation and back-propagation of differential waveforms between before and after the Vp change. The method can be applied to continuous monitoring of the physical state of reservoirs in as oil, gas, and CCS.