Deep geothermal targets are generally located within complex geological systems, such as multi-scale fault zones, generally characterized by a strong spatial variability of many of its spatially distributed properties among which permeability, porosity, compressibility, thermal conductivity, volumetric heat capacity.

The development of geothermal energy generation is closely linked to thermal and hydrogeological knowledge of the subsurface aquifers. Numerical modeling here appears as a tool to delineate development risks induced by limited geological data at great depths.

Computational times of deep geothermal models can be rather long (tens of minutes to hours). Considering a given deterministic model, what are are the most efficient numerical methods to quantify uncertainties related to subsurface physical properties on reservoir production forecasts ?

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