Possibilities and limitations in the utilization of the Neogene geothermal reservoirs in the Great Hungarian Plain, Hungary

Lenkey, László and Zsemle, Ferenc and Mádl-Szőnyi, Judit and Dövényi, Péter and Rybach, Ladislaus (2008) Possibilities and limitations in the utilization of the Neogene geothermal reservoirs in the Great Hungarian Plain, Hungary. Central European Geology, 51 (3). pp. 241-252. ISSN 1788-2281

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Abstract

Abstract Hungary has favorable geothermal conditions. The paper discusses the thermal and hydrogeologic conditions of the Neogene groundwater reservoir below the Great Hungarian Plain. In the exploration of the reservoir one of the most problematic issues, is the interaction between gravity-driven and overpressured flow regimes, especially along conductive faults. A combination of structural geology supported by seismic interpretation, hydrogeochemistry, and hydraulic evaluations can help to delineate the two flow regimes and determine the origin of the water: meteoric (and thus rechargeable) or syn-sedimentary (and thus non-rechargeable) pore water. These results can be incorporated into basin-scale digital models of the Neogene reservoir. The models can be used to predict the response of the reservoir to the water production and injection, and can help to exploit more efficiently and sustainably the thermal waters of the Great Hungarian Plain reservoir.

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