Total evaluation on CCS system against geological uncertainty and troubles

Operations research is required to carry the Carbon Capture and Storage (CCS) efficiently and economically against uncertainty in geological conditions and system troubles to terminated CO₂ storage. Firstly, CCS system performance has been investigated by numerical simulations for estimation error in permeability distribution and formation fracture pressure of the reservoir, and economic evaluations on troubles assumed to make terminate CO₂ injection. The CO₂ buffer, such as sphere gas tanks, should be installed to store CO₂ on the process after its capture at a plant. If CO₂ buffer is not included in the system, captured CO₂ may be released to the atmosphere when a trouble on transportation or injection processes occurs. The larger size of CO₂ buffer volume can be more able to withstand against long-term trouble. However, the larger buffer volume needs larger initial cost for constructing of the buffer. In this study, several simulations have been conducted on its system performance with and without CO₂ buffer in the system. Optimum CO₂ buffer volume has been presented based on economical evaluations for a commercial CCS model.