CO2 leakage from offshore geological storage process: Leakage analysis and environmental risk assessment

Abstract

Carbon Capture and Storage (CCS) is one of the key players in greenhouse gas (GHG) reduction portfolio for mitigating climate change. The technology of CCS is three stage process involving a process of capturing CO2 from industrial and power generating sources, transporting it from its sources to the storage sites, and storing it in the geological structures for long-term isolation from the atmosphere. The objective of the present study is to analyze leakage process from the offshore geologic formations and review its marine environmental risk assessment methodology. The injection and storage technologies have been developed in the global society; however the adverse effect caused by leakage from the geologic formations is not clearly understood. Even the safety level of the CCS is very high and there is almost no possibility to leak but, still the risk to marine ecosystem of the high concentrated carbon dioxide exposure should be verified. The present study introduces the numerical modeling of CO2 leakage process and marine environmental risk assessment methods including fault, event and process (FEP) analysis.power generating sources, transporting it from its sources to the storage sites, and storing it in the geological structures for long-term isolation from the atmosphere. The objective of the present study is to analyze leakage process from the offshore geologic formations and review its marine environmental risk assessment methodology. The injection and storage technologies have been developed in the global society; however the adverse effect caused by leakage from the geologic formations is not clearly understood. Even the safety level of the CCS is very high and there is almost no possibility to leak but, still the risk to marine ecosystem of the high concentrated carbon dioxide exposure should be verified. The present study introduces the numerical modeling of CO2 leakage process and marine environmental risk assessm