Time-lapse attenuation variations using distributed acoustic sensing vertical seismic profile data during CO2 injection at CaMI Field Research Station, Alberta, Canada
Yichuan Wang,
Donald C. Lawton
Abstract:For seismic monitoring of geologic CO2 storage, it is useful to measure time-lapse (TL) variations of seismic attenuation. Seismic attenuation directly connects to different petrophysical parameters within the CO2 storage complex. We have developed an approach to derive smooth time-variant amplitude spectra from seismic signals by using the sparse strongest signal peaks, and then measure two different attributes (conventional Q factor and its geometric counterpart) characterizing the path effects of seismic … Show more
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