APPROACHES TO THE MODELING OF HDR RESERVOIRS - A REVIEW

A classification of HDR models by their representation of the reservoi r geometry is presented together with the 'building-block' sub-process es which embody much of the coupled physics necessary for HDR modellin g. A number of current modelling approaches are reviewed. The need for integrating stimulation and circulation models is identified. The nee d for a good, though not necessarily fully explicit, representation of the reservoir fracture geometry is necessary as a vehicle to express the coupled physics. Limitations on the computational tractability of explicit network models, when strongly coupled physics are added, sugg ests the types of model that may hold the most promise for future work .