| Abstract [eng] |
Potential of geological storage of CO2 has been evaluated in the Baltic sedimentary basin. Information on CO2 emissions of different countries of the Baltic region is provided. The main part of the dissertation is devoted to CO2 storage in structural traps in saline aquifers. Only Cambrian reservoir matches basic requirements for structural storage. All potential storage sites are located in Latvian onshore and offshore.. Only two large structures were identified in Lithuania, though of rather small capacity in view of annual emissions. The storage in monoclinal structures is an alternative technology. This technology is considered, however, as far (or medium) future approach. The Cambrian reservoir is characterised by very good sealing conditions due to very thick overlying Ordovician–Silurian shaly package. The main risk is related to faults that control most of potential structures. Economic modelling of CO2 geological storage in Syderiai and Vaškai structures was performed. Application of CO2 for enhanced oil (and gas) recovery is considered as an additional prospective approach in Cambrian reservoir of Lithuania, Kaliningrad District, and Poland. Very large storage capacity is related to carbonation of ultramafic rocks (serpentinites) of the crystalline basement.. This technology is considered, however, as far future prospect. |
