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| Titel |
Geothermal Play-Fairway Analysis of the Tatun Volcano Group, Taiwan |
| VerfasserIn |
Yan-Ru Chen, Sheng-Rong Song |
| Konferenz |
EGU General Assembly 2017
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 19 (2017) |
| Datensatznummer |
250141026
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| Publikation (Nr.) |
 EGU/EGU2017-4487.pdf |
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| Zusammenfassung |
| Geothermal energy is a sustainable and low-emission energy resource. It has the advantage of
low-cost and withstanding nature hazards. Taiwan is located on the western Ring of Fire and
characteristic of widespread hot spring and high surface heat flows, especially on the north of
Taiwan. Many previous studies reveal that the Tatun Volcano Group (TVG) has great
potential to develop the geothermal energy.
However, investment in geothermal development has inherent risk and how to reduce the
exploration risk is the most important. The exploration risk can be lowered by using the
play-fairway analysis (PFA) that integrates existing data representing the composite risk
segments in the region in order to define the exploration strategy. As a result, this study has
adapted this logic for geothermal exploration in TVG.
There are two necessary factors in geothermal energy, heat and permeability. They
are the composite risk segments for geothermal play-fairway analysis. This study
analyzes existing geologic, geophysical and geochemical data to construct the heat and
permeability potential models. Heat potential model is based on temperature gradient,
temperature of hot spring, proximity to hot spring, hydrothermal alteration zones, helium
isotope ratios, and magnetics. Permeability potential model is based on fault zone,
minor fault, and micro-earthquake activities. Then, these two potential models are
weighted by using the Analytical Hierarchy Process (AHP) and combined to rank
geothermal favorability. Uncertainty model is occurred by the quality of data and spatial
accuracy of data. The goal is to combine the potential model with the uncertainty
model as a risk map to find the best drilling site for geothermal exploration in TVG.
Integrated results indicate where geothermal potential is the highest and provide the best
information for those who want to develop the geothermal exploration in TVG. |
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