Seismic Exploration Around the Geothermal Research Well Gross Schoenebeck (NE German Basin) Combining Tomographic and Reflection Seismic Methods
- Key words
- Seismic exploration, NE German basin, salt tectonics, fault control, seismic tomography, wide-angle reflections, fault imaging, temperature modelling, geothermal reservoir
- Location
- Gross Schonebeck, Germany
- Conference
- World Geothermal Congress
- Year
- 2010
- Session
- 13. Geophysics
- Language
- English
- Paper number
- 1366
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Abstract
Seismic experiments were conducted to study the seismic structure around the geothermal research well GSB 3/90. Travel time tomography was applied to derive a 2D velocity model along a 40 km long transect centered at the geothermal well location. Checkerboard tests were carried out to evaluate the resolving capabilities of the model. Resolution is highest in the central part around the bore hole where the complete sedimentary section and parts of the pre-Permian can be resolved. The major feature of the model is a general decrease in the velocity within a salt up-doming structure. A modelling approach combining the velocity and temperature fields is used to distinguish between the effects related with the 2D temperature field and lithological heterogeneities. Furthermore, a relationship between salt tectonics and deeper fault systems is discussed.
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