MOŻLIWOŚCI GEOLOGICZNEJ SEKWESTRACJI CO2 W UTWORACH CZERWONEGO SPĄGOWCA BASENU POZNANIA

Abstract

FUTURE PROSPECTS FOR CO2 STORAGE IN GEOLOGICAL STRUCTURES OF THE ROTUEGEND POZNAŃ BASINAbstract. Rotliegend geology of the Poznań Basin, being part of the Polish Permian Basin, provides favourable conditions for large-scale CO2 storage. The Rotliegend deposits of significant thickness and advantageous petrophysical parameters, where the pore space is filled by brine, form a mega-structure sealed at the top by a thick unit of Zechstein evaporites. The quality of these seals is confirmed by the existence of several gas fields, originated in relatively small geomorphological traps, to him, integrity of peripheral parts of the storage complex in the Poznań Basin is proven by the presence of gas fields originated as stratigraphic (upslope thinning reservoir lithofacies) or digenetic (decreasing reservoir conditions) gas trap, to addition, this large aquifer is saturated by natural gas, dissolved in highly mineralized brines, up to the maximum saturation phase. The majority of gas fields are depleted, but surface infrastructure has remained, especially gas pipeline systems, which can be used for transferring sequestrated CO2, for example, from Poznań agglomeration. Static and dynamic modeling has proved the possibility of storage of several hundred million metric tons of CO2 in this mega-structure.