Senstitivty Analysis Of Co2 Migration In Deep Saline Aquifer Of Ise Bay, Japan, Using Heterogeneous And Homogeneous 2d Models Based On Depositional Facies Analysis

To obtain some insight into CO2 migration in a monoclinal formation and thereby provide the data for the estimation of CO2 storage potential in Japan, this sensitivity simulation was performed. A cross-section in the Ise Bay was chosen as an example and varied parameters included residual gas saturations, injection interval length and depth. The simulation results indicated that the CO2 migration distances would be significantly affected by teh sand/shale distribution, residual gas saturation, and injection depth. Homogeneous model simulations showed considerably different migration behaviour. Thus, it appears difficult to reflect the facies distributions by such models. (C) 2009 Elsevier Ltd. All rights reserved.