Modelowanie 1D procesów generowania węglowodorów z warstw istebniańskich w profilu odwiertu nawiercającego utwory jednostki śląskie

The paper is focused on petroleum analysis of Istebna Beds in the profile of the borehole located within the Silesian Unit in the Dukla commune. Numerical modeling was carried out using the PetroMod 1D software. 162 meters thick layer of Lower Istebna beds was subjected to modeling. Based on geochemical studies, it was found that the organic matter dispersed in the source rock contains type III kerogen and this rock formation have a good petroleum potential. Organic carbon content in source rock was 2,70%. Modeling was aimed at determining the hydrocarbon potential of source rocks (the amount of generated hydrocarbons), reconstruction the history of the evolution of the sedimentary basin and reconstruction of the thermal history prevailing in the basin. Based on available laboratory data such as the Tmax values and porosity measurements, paleothickness of removed beds was estimated and the erosion was determined at 2100 meters. As a result of the modeling, it was found that the transformation ratio of kerogen in the source rock reached 29%. The generation of hydrocarbons began in the Oligocene, when the source rock was buried to a depth of about 2000 meters and ended in Miocene. Quantity of generated hydrocarbons was about 0.62 million tons from 1 km2 of 162 meters thick source rock.