抄録
Carbond ioxide (CO2) sequestration offers an attractive opportunity for reducing the greenhouse gas emission on our planet. Geological sequestration in deep saline aquifers is widely regarded as areasonable option for long-term disposals of captured CO2 in the future. In this paper, we firstly present a numerical model to consider effects of the pore pressure on fault activity. Then, the shear stress and relative slip along the fault surface under different dip angles are compared with or without considering the pore pressure. Finally, the slip tendency and the local safety factor of the faults are evaluated to quantitatively assess the influence of the pore pressure induced by CO2 in jectionin to deep saline aquifers. From our research, the shear stress change of fault surfaces induced by the pore pressure is clear, and the effects of the pore pressure on the fault surfaces are sensitive to the dip angles of the faults.
