NUMERICAL MODELING OF CARBON DIOXIDE INJECTION AND TRANSPORT IN DEEP SALINE AQUIFERS

摘要

We describe the development of a compositional reservoir simulator capable of modeling multiphase transport of CO_2 in brine aquifers. As an example we consider the radial injection of supercritical CO_2 in a brine aquifer, and results are provided which illustrate the evolution of a 2-phase fluid system in which the injected CO_2 resides in a dense supercritical phase and also dissolves into the liquid phase. Salt precipitation into a solid phase is found to occur close to the injection well where the gas phase dominates.