Hidraulic potential anomaly indicating thermal water reservoir and gas pool near Berekfürdő, Trans-Tisza Region, Hungary

Czauner, Brigitta and Mádl-Szőnyi, Judit and Pogácsás, György and Tóth, József (2008) Hidraulic potential anomaly indicating thermal water reservoir and gas pool near Berekfürdő, Trans-Tisza Region, Hungary. Central European Geology, 51 (3). pp. 253-265. ISSN 1788-2281

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Abstract

Abstract In the surroundings of Berekfürdő (Trans-Tisza Region) a significant positive anomaly was observed in the fluid potential field, in the course of a regional-scale hydrogeologic study of the Great Hungarian Plain (Tóth and Almási 2001). It was assumed that the cause of this phenomenon could be the presence of structural elements in an overpressured fluid potential field. The seismic, hydraulic and hydrogeochemical evaluation of the anomaly proved the presence of a complex structure. The results furnish an example for the theoretical model of Matthäi and Roberts (1996). The identified faults, which define the basement high and rise close to the surface, represent direction-dependent control over the fluid flow systems of the Study Area. The detected horizontal barrier fault zones may act as lateral seals of the Tatárülés-Kunmadaras gas field and might ensure the active water pressure of the reservoir system. The junction of the vertically conducting and horizontally sealing fault zones near Berekfürdő represent the southern limit of the prolific hydrocarbon-bearing Szolnok and the identified “extra“ aquifer. The junction of these faults causes intensive water upwelling which was drilled by Pávai-Vajna in 1928. This exploration initiated the development of the Berekfürdő Spa.

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