Estimation of the Mass of Injected CO2 at Sleipner Using Time-Lapse Seismic Data

H-16 ESTIMATION OF THE MASS OF INJECTED CO2 AT SLEIPNER USING TIME-LAPSE SEISMIC DATA Abstract 1 Since September 1996 Statoil and its Sleipner Partners have injected CO2 into a saline aquifer at a depth of approximately 900 m with an injection rate of up to 1 million tons per year. The aquifer comprising the Utsira Sand has a thickness of more than 200 m near the injection site and is sealed by thick shales. A multi-institutional research project SACS (Saline Aquifer CO2 Storage) was formed to predict and monitor the migration of the injected CO2. 3-D seismic data were acquired