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Geothermal Energy

Science – Society – Technology

Fig. 11 | Geothermal Energy

Fig. 11

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

Fig. 11

Plots of connected porosity (a), permeability (b), and P-wave velocity (c) with depth for the sandstones sampled from exploration well EPS-1 at Soultz-sous-Forêts (Alsace, France). perp sample cored perpendicular to bedding, para sample cored parallel to bedding. The names of the geological units are given on the right-hand side of each plot. Sonic porosity data deduced from well logging data from EPS-1 (from Vernoux et al. 1995) are presented on the left-hand side of a. n refers to the number of samples

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