Gravity and Magnetotelluric Survey of Sub-Zechstein Structures in Northern Poland

An integrated geological model was built for the strongly tectonized belt of the Balaton-lineament in the Zala Basin, SW Hungary, to help further exploration and exploitation in this mature hydrocarbon sub-province. Investigation of core samples and interpretation of recently acquired 3D seismic surveys showed that the most important events of the tectonic evolution were Neogene strike-slip movements and a Pliocene/Quaternary basin inversion. Application of the geological model made it possible 1) to explain the peculiar behaviour of reservoirs; 2) to specify the rock volume and the reserves of known reservoirs; 3) to recognize and exclude a non-perspective sub-region from exploration; 4) and to discover a new hydrocarbon accumulation.