TY - JOUR
T1 - Constitutive Relations for Reactive Transport Modeling
T2 - Effects of Chemical Reactions on Multi-phase Flow Properties
AU - Zhang, Shuo
AU - Liu, Hui Hai
AU - van Dijke, Marinus I.J.
AU - Geiger, Sebastian
AU - Agar, Susan M.
PY - 2016/9/1
Y1 - 2016/9/1
N2 - The relationship between flow properties and chemical reactions is the key to modeling subsurface reactive transport. This study develops closed-form equations to describe the effects of mineral precipitation and dissolution on multi-phase flow properties (capillary pressure and relative permeabilities) of porous media. The model accounts for the fact that precipitation/dissolution only takes place in the water-filled part of pore space. The capillary tube concept was used to connect pore-scale changes to macroscopic hydraulic properties. Precipitation/dissolution induces changes in the pore radii of water-filled pores and consequently in the pore size distribution. The updated pore size distribution is converted back to a new capillary pressure–water saturation relation from which the new relative permeabilities are calculated. Pore network modeling is conducted on a Berea sandstone to validate the new continuum-scale relations. The pore network modeling results are satisfactorily predicted by the new closed-form equations.
AB - The relationship between flow properties and chemical reactions is the key to modeling subsurface reactive transport. This study develops closed-form equations to describe the effects of mineral precipitation and dissolution on multi-phase flow properties (capillary pressure and relative permeabilities) of porous media. The model accounts for the fact that precipitation/dissolution only takes place in the water-filled part of pore space. The capillary tube concept was used to connect pore-scale changes to macroscopic hydraulic properties. Precipitation/dissolution induces changes in the pore radii of water-filled pores and consequently in the pore size distribution. The updated pore size distribution is converted back to a new capillary pressure–water saturation relation from which the new relative permeabilities are calculated. Pore network modeling is conducted on a Berea sandstone to validate the new continuum-scale relations. The pore network modeling results are satisfactorily predicted by the new closed-form equations.
KW - Constitutive relations
KW - Mineral reactions
KW - Multi-phase flow properties
KW - Reactive transport
UR - http://www.scopus.com/inward/record.url?scp=84978863736&partnerID=8YFLogxK
U2 - 10.1007/s11242-016-0744-5
DO - 10.1007/s11242-016-0744-5
M3 - Article
AN - SCOPUS:84978863736
SN - 0169-3913
VL - 114
SP - 795
EP - 814
JO - Transport in Porous Media
JF - Transport in Porous Media
IS - 3
ER -