Reservoir Simulation Studies on the Cerro Prieto Geothermal Field: Preliminary Results

Abstract

A reservoir engineering and simulation study is being carried out on the Cerro Prieto geothermal field. A preliminary material balance has been appliea to the old part of this field. A single block with constant properties in the horizontal direction was used for this preliminary material balance. The vertical block column was subdivided in several levels in order to take into account the known lithologic column. From existing pressure and enthalpy field histories, a single phase (liquid) reservoir assumption was select ed. Under this assumption, a lateral radial recharge was considered in obtaining the pressure and enthalpy history match. These preliminary results indicate that another type of recharge is probably taking place in this part of the field, rather than lateral radial.