Unstable, Super Critical CO₂-Water Displacement in Fine Grained Porous Media under Geologic Carbon Sequestration Conditions.

ABSTRACT: In this study we investigated fluid displacement water with supercritical (sc) CO₂ in chalk under conditions close to those used for geologic CO₂ sequestration (GCS), to answer two main questions: How much volume is available for scCO₂ injection? And what is the main mechanism of displacement over a range of temperatures? Characterization of immiscible scCO₂ displacement, at the pore scale in the complex microstructure in chalk reservoirs, offers a pathway to better understand the macroscopic processes at the continuum scale. Fluid behavior was simulated by solving the Navier-Stokes equations, using finite-volume methods within a pore network. The pore network was extracted from a high resolution 3D image of chalk, obtained using X-ray nanotomogr

SUBMITTER: Gooya R 

PROVIDER: S-EPMC6677758 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature