Distributed seismic monitoring for geological carbon sequestration
This project "DAS for CCS" is a low-cost technique that fits well into the portfolio of monitoring techniques needed to secure safe injection and containment of CO2. It is given 10 Mill. NOK by CLIMIT.
CMR scientists Erling Kolltveit and Peter James Thomas will seek to develop and demonstrate fiber optic distributed acoustic sensing (DAS) technology applied to geological carbon sequestration. Photo: Gunn Janne Myrseth, CMR
CLIMIT has so far used 1,2 Bill.NOK to CCS research. This new project is managed by Kirsti Midttømme at CMR and severeal of her collegues. It seeks to develop and demonstrate fiber optic distributed acoustic sensing (DAS) technology applied to geological carbon sequestration. Field tests will be performed at the Gundih CCS Pilot Project, Indonesia and the CaMi Field Research Station (FRS), Canada.
The global capacity to store CO2 deep underground is large. Industry experts indicate that CO2 can be safely injected and stored at well-characterized and properly managed sites. Large scale storage of CO2 requires an appropriate monitoring programme that provides early warning if the storage site is not functioning as anticipated to stop or control potential CO2 releases.
By combining acoustic data acquired from buried fibre cables and borehole fibre cables during multi-source seismic excitation experiments, and passive long term monitoring of the injection process, DAS has the potential to reveal information that could be used for optimising the injection process and validating well and geological formation integrity. The combination of DAS data with complementary data from EM -wave, conventional seismic, and gravimetric methods may provide further enhanced capability.