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The region of the Upper Silesian Coal Basin (USCB, southern Poland) was a subject of investigations referring to possibilities of underground storage of carbon dioxide. It is an industrial region characterized by high density of industrial infrastructure on the surface of the ground and underground as well as considerable emission of CO2 into the atmosphere. Among significant objects one should mention the presence of 53 mines of hard coal (Fig. 1). In these mines, there is or was conducted in previous years exploitation of coal deposit to the depth of about 1000 m below the terrain surface level. Location of underground storage sites within a small distance from an industrial emitter of CO2 might positively influence the cost-effectiveness of underground storage – if only by reducing costs of gas transport. However, with the current infrastructure, a selection of a proper site for storage necessitated conducting additional investigations, mainly detailed, multi-stage analysis of CO2 injection safety. Below, there are presented outcomes obtained in the years 2007-2010 in the framework of the research project the Technological Initiative I, entitled: “Study of safe carbon dioxide storage by example of the Silesian agglomeration”, and dedicated researches carried out because of commissions received from concerned economic entities.

Leak Tightness of Underground Carbon Dioxide Storage Sites and Safety of Underground CO2 Storage by Example of the Upper Silesian Coal Basin (Poland)