Colloidal release in high temperature porous media with oversaturated fines during supercritical CO2 transport

This paper presents the impacts of supercritical CO2 transport in high temperature porous media with over-
saturated fines. The latter phenomenon (indicates oversaturated fines) is in which the lift force of the fine particleover pore surface is greater than the gravitational and electrostatic forces combined, where the fines are releasedfrom the pore surfaces and transport along with the permeating fluid as colloidal-suspension flow. During
transport, the fines are captured in the pore-throats and thereby deteriorating the permeability and decreasing

fluid recovery as well. Therefore, three sets of coreflood tests have been conducted to examine the fines mobi-
lization in porous media during supercritical CO2 transport and the results have been compared with the resultsobtained from the subcritical CO2 flow. Produced suspension-colloids have been sent for microstructural analysisand its outcomes, supported the experimental results. Statistical modelling and literature data were employedand compared for model validation, which revealed high agreement.