Geothermal Resources and ATES Potential of Mesozoic Reservoirs in the North German Basin

Maximilian Frick, Stefan Kranz, Ben Norden, David Bruhn and Sven Fuchs
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Maximilian Frick: Helmholtz Centre Potsdam–GFZ German Research Centre for Geosciences, Section Geoenergy, 14473 Potsdam, Germany
Stefan Kranz: Helmholtz Centre Potsdam–GFZ German Research Centre for Geosciences, Section Geoenergy, 14473 Potsdam, Germany
Ben Norden: Helmholtz Centre Potsdam–GFZ German Research Centre for Geosciences, Section Geoenergy, 14473 Potsdam, Germany
David Bruhn: Helmholtz Centre Potsdam–GFZ German Research Centre for Geosciences, Section Geoenergy, 14473 Potsdam, Germany
Sven Fuchs: Helmholtz Centre Potsdam–GFZ German Research Centre for Geosciences, Section Geoenergy, 14473 Potsdam, Germany

Energies, 2022, vol. 15, issue 6, 1-26

Abstract: Mesozoic sandstone aquifers in the North German Basin offer significant potential to provide green and sustainable geothermal heat as well as large-scale storage of heat or chill. The determination of geothermal and subsurface heat storage potentials is still afflicted with obstacles due to sparse and partly uncertain subsurface data. Relevant data include the structural and depositional architecture of the underground and the detailed petrophysical properties of the constituting rocks; both are required for a detailed physics-based integrated modeling and a potential assessment of the subsurface. For the present study, we combine recently published basin-wide structural interpretations of depth horizons of the main stratigraphic formations, with temperature data from geological and geostatistical 3D models (i.e., CEBS, GeotIS). Based on available reservoir sandstone facies data, additional well-log-based reservoir lithology identification, and by providing technical boundary conditions, we calculated the geothermal heat in place and the heat storage potential for virtual well doublet systems in Mesozoic reservoirs. This analysis reveals a large potential for both geothermal heating and aquifer thermal energy storage in geologically favorable regions, and in many areas with a high population density or a high heat demand. Given the uncertainties in the input data, the applied methods and the combination of data from different sources are most powerful in identifying promising regions for economically feasible subsurface utilization, and will help decrease exploration risks when combined with detailed geological site analysis beforehand.

Keywords: geothermal resource assessment; heat in place; storage potential; subsurface utilization; North German Basin (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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Citations: View citations in EconPapers (1)

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