IL Giurassico superiore del southwestern Barents Sea: distribuzione e qualità della materia organica e Source Rock Modeling

The aim of this study is to build a source rock model in sediments of the Upper Jurassic of the southwestern Barents Sea. Geochemical data like TOC and HI of seven wells localized in the Bjørnøya Basin area, were collected and restored. All data come from NPD (Norwegian Petroleum Directorate) online archive. To simulate the distribution, quantity and quality of the organic matter the software OF-Mod (Organic Facies Modeling, SINTEF) has been used, which allows a quantitative and qualitative forecast of a potential source rock away from the well. It requires several input data like top and bottom maps of the interval, paleobathymetry, distance to shore, sand fraction map and wells data (TOC, HI). Subsequently organic parameters like Primary Productivity, Anoxic Bottom Water, Oxygen Minimum Zone and Terrestrial Organic Matter were setting. The simulation has allowed to obtain maps of TOC and HI of the entire interval Upper Jurassic and also of the two formations which constitute it: Fuglen (Oxfordian) and Hekkingen Formation (Kimmeridgian-Tithonian). The latter is recognized to be the main source rock in the southwestern Barents Sea and our model shows that it achieves good TOC values in the whole study area.