Lawrence Berkeley National Laboratory

LBNL's GEOSEQ project is a key participant in the Frio II brine pilot studying geologic sequestration of CO2. During During the injection phase of the Frio-II brine pilot, LBNL collected multiple data sets including seismic monitoring, hydrologic monitoring and geochemical sampling. These data sets are summarized in this report including all CASSM (continuous active source seismic monitoring) travel time data, injection pressure and flow rate data and gaseous sampling and tracer data. Additional results from aqueous chemistry analysis performed by the U. S. Geological Survey (USGS) are summarized. Post injection modification of the flow model for Frio II is shown. Thesemodifications are intended to facilitate integration with the monitoring data and incorporation of model heterogeneity. Current activities of LBNL's GEOSEQ project related to the Frio II test are shown, including development of a new petrophysical model for improved interpretation of seismic monitoring data and integration of this data with flow modeling.