© Kalkwerke H. Oetelshofen GmbH & Co. KG

Geothermal Geology

Our Geothermal Geology Competence Centre offers services in the field of geoscientific potential assessment of deep geothermal reservoirs. We evaluate three-dimensional properties of geothermal reservoirs in the subsurface, analyse the regional to local geology, sedimentology and diagenesis of carbonate carriers and assess these for sites also by means of outcrop analogue studies and extrapolate the data into the subsurface. In addition, we work out the relationship between fault zones and rock properties and offer comprehensive petrophysical, geochemical and petrographic laboratory analyses. Based on experimental approaches, weperform hydrogeology and hydrogeochemistry analyses and model thermal patterns in the subsurface.

Survey of a borehole in the Ruhr Area for lithology and fracture patterns.
© Fraunhofer IEG/Jagert
Survey of a borehole in the Ruhr Area for lithology and fracture patterns.
Modelling of isotherms above a salt diapir.
© Fraunhofer IEG/Alms
Modelling of isotherms above a salt diapir.
Cathodoluminescence image of saddle dolomites in Kohlekalk units, Ruhr Area. Image width is 3 mm.
© Fraunhofer IEG/Immenhauser
Cathodoluminescence image of saddle dolomites in Kohlekalk units, Ruhr Area. Image width is 3 mm.
Sampling (Steltenberg Quarry, Hagen) of carbonates for laboratory analysis.
© Fraunhofer IEG/Lippert
Sampling (Steltenberg Quarry, Hagen) of carbonates for laboratory analysis.