Construction of high-resolution stochastic geological models and optimal upscaling to a simplified layer-type hydrogeological model

► Generation of a high-resolution 3D stochastic geological model of hydrofacies. ► Sequential indicator simulation with corrections for local probabilities and for two- and three-point template statistics. ► Optimal reduction of the number of vertical grid-blocks to a few layers via simulated annealing. ► Demonstration of the methodology to a restricted volume of a detrital aquifer system.