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Fig. 14 | Geothermal Energy

Fig. 14

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

Fig. 14

The ratio of permeability measured parallel to bedding and permeability measured perpendicular to bedding as a function of connected porosity (a), clay content (b), and average grain size (c) for sandstones sampled from exploration well EPS-1 at Soultz-sous-Forêts (Alsace, France). Samples that plot within the grey zone are more permeable perpendicular to bedding, and samples that plot within the white zone are more permeable parallel to bedding. perp sample cored perpendicular to bedding; para sample cored parallel to bedding. n refers to the number of data points (each of which represents an average)

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