Seismic assessment of geothermal potential: Concept and application Part 2: Application

The exploration of renewable energies such as geothermal energy plays an important role in the reduction of greenhouse gas emissions, but its widespread economic use is limited by high uncertainties in the reservoir characterization and the resulting high investment risks. The aim of the MeProRisk project (with the project partners CAU Kiel, RWTH Aachen, FU-Berlin and Geophysica) is the improvement of geophysical methods for the exploration of the geothermal potential by setting up a concept which will be based on the combination of geophysical and hydraulic borehole measurements and thermal simulations (Part1: Concept, Szalaiova E., Iwanowski K., Rabbel W.). Since geothermal properties vary significantly in different subsurface conditions such as crystalline and sediments, different approaches in the fracture zones detection and the derivation of petrophysical boundary conditions for geothermal modeling must be defined. A comparative analysis of seismic data combined with borehole information was applied on the following two geothermally relevant locations: (1) Southern German crystalline: German continental deep drilling program (KTB), and (2) North German Basin sediments (provided by RWE-DEA). Available are 3D reflexion seismic datasets, numerous vertical seismic profiles and a dataset containing a big amount of various log data. The result is a 3D structure model, which will be used as input in the following modeling. This poster gives an overview of the current state of results and a comparison of the two datasets mentioned above.