Computational Simulation of SABALAN Geothermal Reservoir located at Northwest of Iran

In this study, a ۳-D simulation of the northwest Sabalan geothermal reservoir was investigated. The model was developed on the base of a geological model obtained from the analysis of the available field data. The Geothermal filed is modeled on a rectangular domain with dimension of ۱۲ × ۸ km and ۴.۶ km height, giving a total surface area of ۹۶ km۲. The domain was discretized to the ۲۵۹۵ non-uniform rectangular cells using integral finite difference method (IFDM). The model has ۱۴ horizontal layers ranging in thickness between ۱۰۰-۱۰۰۰ m extending from a maximum of ۳۶۰۰ to -۱۰۰۰ m a.s.l. Fifteen rock types were used in the model to assign different permeabilities from ۱× ۱۰-۱۵ to ۲.۰ ×۱۰-۸ m۲ based on the geological model. The results was achieved from Natural state simulation of the reservoir indicate acceptable agreements in temperature profiles with the experimental data which measured in the wells.