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Fig. 17 | Geothermal Energy

Fig. 17

From: Microstructural and petrophysical properties of the Permo-Triassic sandstones (Buntsandstein) from the Soultz-sous-Forêts geothermal site (France)

Fig. 17

Permeability as a function of scaled porosity (see text for details) for sandstones sampled from exploration well EPS-1 at Soultz-sous-Forêts (Alsace, France) (data unique to this study), the three quarry sandstones (data unique to this study), sandstones from EPS-1 measured by Griffiths et al. (2016), and Fontainebleau sandstone measured by Bourbié and Zinszner (1985). Grey dashed lines are modelled porosity–permeability curves using the method outlined in Wadsworth et al. (2016) (see Eqs. 10 and 11). The number next to each modelled curve refers to the monodisperse grain diameter used in Eq. 11. Perp sample cored perpendicular to bedding, para sample cored parallel to bedding

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