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DGG/EAGE Workshop
25 February 2011
Geophysics for Deep Geothermal Energy
Cologne, Germany
Welcome

To highlight the role of geophysics in the various areas of development of deep geothermal resources, the presidents of theGerman Geophysical Society (DGG, Deutsche Geophysikalische Gesellschaft), Prof. Dr. Yaramanci and Prof. Dr. Räkers, have initiated an international DGG/EAGE-Workshop on the role of geophysical methods for deep geothermal energy. This workshop is organised under the heading “Geophysics for Deep Geothermal Energy” and will be held in Cologne/Germany on Friday, the 25th of February, 2011. Following the success of this format at the 2010 DGG annual assembly held in Bochum, where the role of geophysics in carbon capture and storage (CCS) was discussed, the workshop will be preceded by the 2011 DGG annual assembly, where topics related to deep geothermal energy will also be addressed.

In general, exploration for deep geothermal strives to detect hot water or steam reservoirs in a hot and highly permeable environment. The hot, mostly volcanic environment presents a challenge for geophysical exploration methods, mostly developed for the hydrocarbon industry. The major objective of applying geophysical methods is to obtain quantitative information of the subsurface. The transformation from raw data to an estimated geophysical model is then needed to provide a description of the subsurface fitting the observed data. Petrophysical relationships are used to relate geophysical measurements with hydraulic and hydrothermal properties. So the first step is to obtain reliable geophysical models with which to translate geophysical properties into hydraulic parameters. To generate more geophysical data during the development of geothermal reservoirs, monitoring is required. Seismic events are usually triggered that can sometimes be felt at the surface, especially in areas with natural seismic activity. While such events have rarely shown damaging effects to surface structures, they are considered a nuisance and thus led to calls for increased seismic monitoring.

This one-day workshop aims at giving an overview of state-of-the-art research related to deep geothermal energy development, focussing on the contribution of geophysical methods. The scientific sessions will deal with exploration, Reservoir development, stimulation and monitoring as well as Data base, resource assessment and modeling. In addition, an introduction session will convey an overview over status-quo, open questions and opportunities. The emphasis of the workshop will be on the scientific approaches in geophysics for geothermal development.

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