Determining changes in CO2 saturation from time-lapse measurements using ghost reflections retrieved by seismic interferometry

One of the targets of time-lapse seismic monitoring of CO2 sequestration is to determine the parts of the reservoir reached by the injected CO2 and to estimate their saturation. Such information could be extracted from the time-lapse measurement using AVO or impedance information. But non-repeatability of the source positions and time-lapse...

4D seismic reservoir characterization, integrated with geo-mechanical modelling

Hydrocarbon production induces time-lapse changes in the seismic attributes (travel time and amplitude) both at the level of the producing reservoir and in the surrounding rock. The detected time-lapse changes in the seismic are induced from the changes in the petrophysical properties of the rock, i.e. (visco-)elastic constants as a consequence...