Abstract
Flow experiments using column packed with porous media were performed to examine the deposition and clogging phenomena at high temperatures during calcium carbonate water injection. Flow rates of the column test decreased gradually with decrease of permeability due to mineral precipitation. Deposition of carbonate mineral was found as calcite and aragonite on the surface of rock cuttings and glass beads respectively. It is uncertain how to measure the reactive surface area to predict reaction rates in nano level.In this paper, the numerical simulations using deposition rates provide a good agreement with the observed flow rate changes on column tests. In addition, this numerical model suggests an alternative without kinetic parameters to evaluate deposition rates of mineral by CO2-water-rock interaction. This carbonate mineralization on CO2 sequestration will decrease the possibility of CO2 leakage risk at hydrothermal conditions and prevent buoyancy from moving upward.
