A numerical simulation study on the CO 2 leakage through the fault
- Authors
- Kang, K.; Huh, C.; Kang, S.-G.
- Issue Date
- 2012
- Keywords
- Carbon Dioxide Capture and Storage (CCS); Leakage; Offshore Geological Storage; Simulation; TOUGH2
- Citation
- Program Book - OCEANS 2012 MTS/IEEE Yeosu: The Living Ocean and Coast - Diversity of Resources and Sustainable Activities
- Journal Title
- Program Book - OCEANS 2012 MTS/IEEE Yeosu: The Living Ocean and Coast - Diversity of Resources and Sustainable Activities
- URI
- https://www.kriso.re.kr/sciwatch/handle/2021.sw.kriso/8797
- DOI
- 10.1109/OCEANS-Yeosu.2012.6263432
- ISSN
- 0000-0000
- Abstract
- Many carbon capture and storage projects are underway all over the world to reduce greenhouse gas emissions. In this study, we numerically analyze the movement of injected CO 2 through the faults undetected prior to injection. We use TOUGH2-MP ECO2N software to estimate the behavior of injected and leaked CO 2. The storage site is 100 m thick saline aquifer located 850 m under the shallow continental shelf. It is assumed that CO 2 is first leaked through the 1 st fault located 400 m away from injection well and then leaked to the seabed through the 2 nd fault located 400 m away from 1 st fault. We vary the injection rate of CO 2 to 0.25, 0.50, and 0.75 MtCO2/year to analyze the effect of injection rate. For 0.25 MtCO 2/year injection rate, no leakage is calculated, however, for 0.50 and 0.75 MtCO 2/year, the leakages of CO 2 to seabed are detected. The starting times of leakage at 0.5 and 0.75 MtCO 2/year injection rates are 22.9 and 17.8 years, respectively. The ratios of total leaked CO 2 to total injected CO 2 at 0.5 and 0.75 MtCO 2/year injection rates are 8% and 16.4%, respectively. ? 2012 IEEE.
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