Evaluation of CO 2 Storage Potential for Feasibility Study Sites on Innovative Zero-emission Coal Gasification Power Generation

We have investigated storage potential in a feasibility study of a CO2 geologic storage system design. This study is a part of a research project titled "Innovative Zero-emission Coal Gasification Power Generation". In commercial use cases, the total amount of CO2 storage is approximately 30 million tons, which means that the annual amount of CO2 storage is 1.54 million tons in a 20-year injection cycle. In the case of large-scale CO2 storage, the total amount of CO2 storage is assumed to be 200 million tons; the annual amount of CO2 storage is 10 million tons in a 20-year cycle. We selected three reservoir sites sites A, B, and C as commercial use cases. An additional site, Site D, was selected as a large-scale CO2 storage site, the storage capacities of aquifers distributed in 4 sites, sites A, B, and C as commercial use cases and site D as large-scale CO2 storage case, were evaluated. Additionally, injectivity and long-term behavior were examined through numerical analyses. These results indicated the possible of sites A, B, and C as commercial use and site D as large-scale CO2 storage. This paper describes the site selection, geological characterization, and CO2 storage potential of sites selected for case studies. (C) 2013 The Authors. Published by Elsevier Ltd.