Automated Hierarchical 3D Modeling of Quaternary Aquifers: The ArchPy Approach

When modeling groundwater systems in Quaternary formations, one of the first steps is to construct a geological and petrophysical model. This often cumbersome because it requires multiple manual which include geophysical interpretation, construction structural model, identification geostatistical model parameters, facies, property simulations. Those are carried out using different software, makes automation intractable or very difficult. A non-automated approach time-consuming updating difficult when new data available some interpretations modified. Furthermore, conducting cross-validation procedure assess overall quality models quantifying joint parametric uncertainty tedious. To address these issues, we propose Python module, ArchPy, automatically generate realistic parameter models. One its main features that operates hierarchical manner. The input consist set borehole stratigraphic pile. pile describes how should be constructed formally compact It contains list units their order pile, conformability (eroded onlap), surface interpolation method (e.g., kriging, sequential Gaussian simulation (SGS), multiple-point statistics (MPS)), filling for lithologies MPS indicator (SIS)), properties SGS). Then, automatic. In step, unit boundaries simulated. Second, they filled with lithologies, finally, simulated inside lithologies. All straightforward automated once related parameters have been defined. Hence, this extremely flexible. provides framework end-to-end stochastic then proposed allows quantification at any level may used full inversion. work, ArchPy illustrated from an alpine aquifer upper Aare plain (southeast Bern, Switzerland).