The study on coals in Slovenia and their potential as geological medium for sequestration of CO2 was a part of the national project entitled Possibilities of geological storage of CO2 in Slovenia. The whole project, carried out by coordination between 4 organisation (see "Objavljeno v") was written in 8 books - from presenting theoretical background, through evaluation of CO2 storage potential in deep saline aquifers, in deep coal seams and in depleted oil and gas fields, to presentation of a programme for real injection and storage of CO2 in different media - especially in depleted oil and gas fields. Previous investigations on characteristics of our coals (geological structures of coal deposits, reserves, coal quality, rank, petrography, porosity, rock-mechanics, geochemistry etc) and especially preliminary tests of gas sorption capacity, which were done in the past only for the Velenje lignite, were the only realistic data for estimation of CO2 storage potential in coals of Slovenia. As a final result it was concluded, that only deep ()800 m underground) coals of NE Slovenia in the Mura formation (see Chap. 7.1 of this report) might be potentially suitable for CO2 sequestration. This potential was theoretically - based on volume and porosity - estimated to 35-100 Mt CO2. However, real potential, due to realistically expected low permeability and swelling effect by injected CO2, is most probably considerably lower.
F.02 Acquisition of new scientific knowledge
COBISS.SI-ID: 1948757