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Geothermal Energy

Science – Society – Technology

Fig. 9 | Geothermal Energy

Fig. 9

From: Geophysical characteristics of a fault system in the northern Central Range of Taiwan and its applications for geothermal energy exploration

Fig. 9

Key geophysical logs and the FMI image of the 1334–1346 m MD fault core. The geophysical logs denote the lithology (GR and Vsh logs) and porosity (PHIE, RHOB, NPHI, and RT logs). The two most fractured intervals within the fault core are 1334–1339 and 1343–1346 m MD. The 1334–1339 m interval developed in the metasandstones (low GR) with extremely high porosity (low RT, low RHOB, and high NPHI values). This interval is the most permeable interval in the studied well section. The attitude of the bounding fault planes at 1334 and 1338 m MD is about N50E/75–80°NW

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