Structural controls on petroleum migration and entrapment within the faulted basement blocks of the Szeghalom Dome (Pannonian Basin, SE Hungary)

摘要

The basement of the Pannonian Basin contains several fractured metamorphic hydrocarbon reservoirs that typically form structural highs between the Neogene sedimentary sub-basins. One of the largest reservoirs; the Szeghalom Dome, is located on the northern margin of the Bake's Basin and is mainly composed of Variscan gneisses and amphibolites with different metamorphic evolutions. These petrologically incompatible blocks were juxtaposed by post-metamorphic tectonic activity that was accompanied by the formation of brittle fault zones with higher transmissibilitics.