Modelling of colmatant mass transfer during in situ gas generation process

Abstract

A model of accumulation during mass transfer in the nearwall flow is proposed, which takes into account not only the impact of hydrodynamic flows on the processes, but also the reversed impact of growing colmatant on the flow pattern. The numerical study of the model has shown that hydrodynamic flows can have a significant influence on the processes of colmatant formation. In particular, the colmatant availability can also lead to the destruction of concentration fronts of reactants. As a result of their evolution, accumulations of complex structure are formed. It is shown that the process of colmatant formation depends on the ratio of characteristic values of the displacement rate in the porous medium.Keywords. colmatant • flow • porous medium • mass transfer • carbon dioxide • brine solution.