Water/Brine Imbibition Experiments in Mudrocks Immersed in scCO2

Description

These videos serve as complimentary multimedia data for the paper: "Mudrock Wettability at Pressure and Temperature Conditions for CO2 Geological Storage" published in the International Journal of Greenhouse Gas Control (preprint available in http://dx.doi.org/10.2139/ssrn.4709815) The videos show the behavior of water and brine droplets as released on top of porous media (resedimented mudrocks, Berea sandstone, and Berea sandstone treated to be hydrophobic) immersed on supercritical CO2 (pressure range: 26 to 41 MPa; temperature range: 60 to 90C). The results show that water and brine imbibe quickly and spontaneously in resedimented mudrocks, supporting expectations of water-wet mineral surfaces and structural sealing of buoyant scCO2 by capillary forces.