Within the framework of the IGET research programme, the high-enthalpy reservoirs
proven in Hungary are investigated more deeply. Having selected as a result of the
first working step the site of Fábiánsebestyén-Nagyszénás as the most suitable region
in Hungary, now all the available relevant geophysical and well logs are selected and
reviewed for their usability.
The Fábiánsebestyén-Nagyszénás site is located in the Békés basin forming a subbasin
within the Great Hungarian Platform in the Pannonian basin. Mesozoic and older rocks
are deposited here under 2,500 – 300 m thick Tertiary layers filling the basin. In
the course of the Pannonian basining, NW striking overthrusting can be proven.
In 1985, heavy and 202 °C hot steam and water eruptions occurred at a depth of 3,800
– 4,000 m (Triassic carbonates) in the hydrocarbon exploratory well Fab-4. The well
is located near the Békés line which is one of the most significant overthrust zones.
In the course of the work on the project, geological, petrological and geophysical
well logs as well as geophysical areal data (seismics, MT) are registered now. It is
the objective to determine possibilities of predicting the location of relevant
high-enthalpy reservoirs based on geophysical investigations. The results of these
investigations will be presented at the conference.