Processed 3D Tomographic Images of Repeated CO2 and Brine injections into Layered Bentheimer Sandstone

This data arises from a series of core-flooding experiments intended to inform knowedge of carbon dioxide (CO2) sequestration in geologic reservoirs. Four cycles of supercritical CO2 ("scCO2") and 1.0 M KI brine injections were conducted in a Bentheimer sandstone core with a prominent low permeability region at the base (inlet side) of the core. Multiple successive scCO2 injections were performed within cycles, and scCO2 injection flow rate was varied. Injections occured under reservoir-relevant temperature and pressure conditions (45 deg C, 1250PSI/8.6 MPa). 3D X-ray tomograms were acquired at the endpoint of every injection process. Scanning was undertaken using the in-house developed high-pressure core-flooding apparatus at the ANU CTLab at a resolution of 3.92 micron/voxel edge.