A methodology for velocity field measurement in multiphase high-pressure flow of CO2 and water in micromodels

作者：Kazemifar Farzan; Blois Gianluca; Kyritsis Dimitrios C; Christensen Kenneth T^*

来源：Water Resources Research, 2015, 51(4): 3017-3029.

DOI：10.1002/2014WR016787

• pore-scale flow
• high pressure
• quantitative measurement
• velocity
• microscopy

This paper presents a novel methodology for capturing instantaneous, temporally and spatially resolved velocity fields in an immiscible multiphase flow of liquid/supercritical CO2 and water through a porous micromodel. Of interest is quantifying pore-scale flow processes relevant to geological CO2 sequestration and enhanced oil recovery, and in particular, at thermodynamic conditions relevant to geological reservoirs. A previously developed two-color microscopic particle image velocimetry approach is combined with a high-pressure apparatus, facilitating flow quantification of water interacting with supercritical CO2. This technique simultaneously resolves (in space and time) the aqueous phase velocity field as well as the dynamics of the menisci. The method and the experimental apparatus are detailed, and the results are presented to demonstrate its unique capabilities for studying pore-scale dynamics of CO2-water interactions. Simultaneous identification of the boundary between the two fluid phases and quantification of the instantaneous velocity field in the aqueous phase provides a step change in capability for investigating multiphase flow physics at the pore scale at reservoir-relevant conditions.

• 出版日期2015-4