Uncertainty Analysis of Selected Geological Properties of the Radecin CO2 Potential Storage Site - NW Poland

The study presents the risks associated with the precision of structural mapping and uncertainty analysis of basic property parameters of the Radecin anticline. Investigated area is located in the SW Poland on the Gorzw Block. Lower Jurassic aquifer was selected as a potential site for CO2 storage. The author defined to what extent the amount and distribution of input data analysed within the structure affects the credibility of the sealing horizon and how the variable property parameters influence on volumetric calculations of GIIP in the reservoir. Structural uncertainty was performed by comparing deterministic versions of horizons with stochastic realizations. Using the Uncertainty and optimization module in Petrel, author created the workflow to investigate four property parameters in the model. The results shows that poor data control determine the significant range of structural uncertainty. Currently used input data do not allow to control enough well the SE part of the anticline. In Volume Calculation the most sensitive parameter is gas saturation. Investigated Net-To-Gross cutoff has very small impact on the changing proportion of reservoir/non reservoir cells. That's why this parameter may be omitted.