oa Time-lapse Gravity and Seabed deformation monitoring as a cost-effective method for Offshore Carbon Storage

Seafloor gravimetry and subsidence monitoring are cost-effective methods for tracking subsurface mass changes and seabed deformation in offshore reservoirs. These technologies help improving the understanding of reservoir dynamics, optimizing hydrocarbon recovery, and ensuring the safety and regulatory compliance of carbon capture and storage (CCS) projects.

On the Norwegian continental shelf, these methods have been successfully applied to major fields like Troll, Mikkel, Snøhvit, and Ormen Lange, enhancing reservoir management decisions. The Mikkel gas field case study demonstrates the effectiveness of integrating gravimetry and subsidence data to monitor water influx and optimize production strategies.

Recently, feasibility studies for CCS projects such as Morecambe CCS in the UK, highlight the potential of these technologies to monitor CO2 storage, track the CO2 plume, and ensure long-term storage conformance. Overall, seafloor gravimetry and subsidence monitoring offer reduced costs, greater flexibility, and a lower environmental impact compared to seismic surveys, making them sustainable solutions for CCS monitoring.