A new facility for viscosity and density measurements for CO₂ – rich mixtures relevant for CO₂ transport and storage

For safe and cost-effective design, optimization, and operation of CO₂ capture, transport, and storage (CCS) processes, accurate viscosity and density data of CO₂-rich mixtures are required. Currently, there are large knowledge gaps in these properties, and it needs to be addressed for building good reservoir models and simulation tools. A modified two-capillary viscometer with several novel solutions for accurate measurement of viscosity and density of CO₂-rich mixtures relevant for CO₂ transport and storage has been designed and constructed. The new setup covers a range between 213.15 K and 423.15 K in temperature and up to 100 MPa in pressure. This paper describes the facility, calibrations, uncertainties estimation, and first test measurements performed using the setup.