Effect of in-situ Stress Alterations on Flow through Faults and Fractures in the Cap Rock
conference paper
Cap-rock integrity is of paramount importance during injection and subsequent long-term storage of CO2 in the subsurface. Preexisting (natural) and man-induced fractures in the cap rock represent potential flow paths out of the storage formation. In this study, a first-order semi-analytical model of flow through a vertical fracture penetrating cap rock is constructed taking the stressdependent fracture permeability into account. The model is then applied to study the effects of in-situ stress normal to fracture on the flow rate through the fracture. The flow rate increases nonlinearly with the reservoir pressure, which is due to a combined effect of nonlinear fracture deformation law and the cubic law governing the flow rate.
TNO Identifier
781350
ISSN
18766102
Source
Energy Procedia, 114, pp. 3193-3201.
Publisher
Elsevier Ltd
Source title
13th International Conference on Greenhouse Gas Control Technologies, GHGT 2016. 14 November 2016 through 18 November 2016
Editor(s)
Dixon, T.
Laloui, L.
Twinning, S.
Laloui, L.
Twinning, S.
Pages
3193-3201