Focused Monitoring of CO2 Injection Using Time-Lapse Vertical Seismic Profile (VSP)

Presented at the Geophysical Research for Gigatonnes CO₂ Storage – SEG Workshop – Part I, Golden, CO, USA, 14-19 July 2024, by Victoria Brun

Written by M. Said Abrouche¹, Jean-Luc Mari^1,2, Marie Macquet³, Brendan Kolkman-Quinn³, and Victoria Brun¹ – SpotLight¹ , Sorbonne University, Paris, France², Carbon Management Canada (CMC), Alberta, Canada³

Abstract:

The CMC CaMI-Newell Field Research Station, operated by Carbon Management Canada (CMC) in Alberta, Canada, serves as an experimental CO2 injection site aimed at advancing monitoring technologies. SpotLight utilizes time-lapse Vertical Seismic Profile (VSP) data acquired at the Newell Field Research Station for focused monitoring at 6 specific subsurface spots. CMC’s modeling suggests CO2-induced variations in elastic parameters, with increased saturation leading to amplitude reductions. VSP processing isolates reflectivity wavefields and ensures data cross-equalization for time-lapse analysis. Results are interpreted to determine the presence of CO2. Interpretation reveals CO2 detection at 2 out of 6 spots, which aligns with CMC’s interpretations of plume migration from valkaway VSP images.

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