DAS seismic monitoring of the shallow CO₂ controlled-release experiment at the South West Hub In-Situ Laboratory

Summary

Carbon Capture and Storage (CCS) remains one of the most viable short-term options for halting the increase in atmospheric concentration of greenhouse gases. Assurance of storage safety is an essential part of the process required to maintain a community operations licence. Ability to understand the migration behaviour of CO₂ in the shallow subsurface and faults is essential for leakage detection and mitigation. Here we present the results of the successful detection and monitoring of a shallow injection of extremely a small quantity of carbon dioxide into a fault zone using a borehole seismic technique with fibre optic sensors. The experiment was conducted at the South West Hub In-Situ Laboratory in Western Australia.

• CO2 monitoring
• DAS
• borehole seismic