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Fig. 14 | Geothermal Energy

Fig. 14

From: Predictability of properties of a fractured geothermal reservoir: the opportunities and limitations of an outcrop analogue study

Fig. 14

Plots showing the vertical variation of (a) fracture aperture and (b) the calculated fracture porosity (secondary porosity index), and observed mud loss during the drilling operation, as a proxy for the structural permeability. The grey dotted lines show rejected data, e.g. data found to be biased by bad hole conditions, red bold lines negative and blue bold lines positive fracture porosities

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