Modelowanie warunków generacji węglowodorów w utworach starszego paleozoiku na obszarze zachodniej części basenu bałtyckiego

Abstract

obszarze zachodniej części basenu bałtyckiego MODELLING OF HYDROCARBON GENERATING CONDITIONS WITHIN LOWER PALAEOZOIC STRATA IN THE WESTERN PART OF THE BALTIC BASIN Summary The western part of the Palaeozoic Baltic Basin is a potential area of petroleum exploration. Most perspective are here the Cambrian deposits because source and reservoir rocks have the best properties. On the basis of structural, subsidence and present/past thermal analysis, the modeling of hydrocarbon formation along five geological cross-sections using the PetroMod software was carried out. The spatial range of the modeled “oil window” in the Cambrian deposits is relatively narrow and runs from the Łeba Elevation through the Gdańsk Bay southwards. The Cambrian rocks in the Warmia region — adjacent to with the Kaliningrad District where Russian geologists discovered oil fields in the Cambrian deposits — are in the first phase of hydrocarbon generation. Present thermal field in Lithuania and the Kaliningrad District indicate on the existence of strong positive geothermal anomaly which probably heated up not deeply lying Palaeozoic rocks to the “oil window” phase. This optimistic circumstance permits to suppose that along the Polish side of state border, from the Warmia region eastwards, the “oil window” parameters are improved. If the other factors of the petroleum play will be affirmative, then the area of northern Warmia may produce expect new oil field discoveries.