DiSECCS Work Package 5 : insights and recommendations

This DiSECCS deliverable presents insights into and recommendations for the monitoring systems and protocols required to maintain the integrity of storage reservoirs suitable for largescale CO2 storage and for obtaining a social licence to operate a CCS project. DiSECCS research has focussed on the use of seismic monitoring tools combined with social science research to identify key factors in establishing trust and confidence in the storage system. Key areas of research cover:  Demonstrating the capability of modern seismic monitoring to provide high resolution images of CO2 stored in the reservoir that enable determination of migration and trapping processes with a degree of confidence sufficient to make robust predictions about future, long-term, storage performance.  Developing new understanding of rock physics and seismic wave propagation that reduce uncertainty in the quantitative analysis of time-lapse seismic monitoring data.  Providing new laboratory data to constrain new rock physics theory and support quantitative analysis of seismic datasets.  Identifying significant factors in establishing a social licence in the context of CCS and in particular offshore CO2 storage in the UK. The overall aim was to show that storage monitoring systems really do enable operators and regulators to understand what is happening at a storage site and to respond as necessary to any unexpected or irregular behaviour. Insights and recommendations have been developed in the following areas:  CO2 plume location and detection.  CO2 layer thickness and characterisation.  New rock physics.  Pressure mapping.  Experimental procedures and constraints.  Developing and maintaining a social licence to operate N.B. Many of the techniques mentioned here are summarised further in the DISECCS Final Summary Report (BGS 2017a) and in the DiSECCS Toolbox (BGS 2017b). Background information and further results from DiSECCS can be found on the project website https://www.bgs.ac.uk/diseccs/