Multiscale fracture networks and their impact on hydroshearing response in the Canadian Shield (Kuujjuaq, Canada)

Abstract Understanding the natural fracture network is essential for geothermal-related investigations. However, geometrical attributes depend on scale of observation. Therefore, a multiscale characterization to ensure that heat and flow simulations are based stochastically generated discrete models representative system observed. The objective this project was understand effect data performance potential enhanced geothermal in crystalline rock northern Canada. This accomplished by collecting characterizing from core, outcrops satellite image, then constructing model which used simulate system. numerical suggest length spacing have an important impact its performance. Thermal short-circuiting can be easily achieved if modelled solely image data, hydroshearing may less effective DFN constructed outcrop data. combining different datasets provides best compromise between extraction, water losses, hydraulic impedance thermal drawdown. Despite uncertainties, highlights importance analysis heat-flow reservoirs.