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Geothermal Energy

Science – Society – Technology

Fig. 15 | Geothermal Energy

Fig. 15

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

Fig. 15

Dry and wet P-wave velocity as a function of connected porosity (a) and clay content (b) for the sandstones sampled from exploration well EPS-1 at Soultz-sous-Forêts (Alsace, France) and the three quarry rocks. perp sample cored perpendicular to bedding; para sample cored parallel to bedding. n refers to the number of samples

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