Environmental impact assessment technologies for sub-sea geological CCS: Perspective of prediction models
| Autor: | Kentaro Kamada, Takuya Nakashima, Hiroyuki Oyama, Yu Tao, Yuki Kano, Toru Sato, Ayako Fukumoto |
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| Rok vydání: | 2016 |
| Předmět: |
Petroleum engineering
Global warming Clathrate hydrate Sediment 02 engineering and technology 010501 environmental sciences 01 natural sciences Microscopic scale Methane chemistry.chemical_compound Permeability (earth sciences) 020401 chemical engineering chemistry Geotechnical engineering 0204 chemical engineering Porous medium Hydrate Geology 0105 earth and related environmental sciences |
| Zdroj: | 2016 Techno-Ocean (Techno-Ocean). |
| DOI: | 10.1109/techno-ocean.2016.7890697 |
| Popis: | Carbon capture and storage (CCS) is a potentially effective counter measure against global warming. CO 2 storage in deep saline aquifers using the sealing effect of gas hydrate is of great interest nowadays, due to the large capacity of CO 2 storage in sub-seabed sand sediments and low risk of CO 2 leakage. In this method, the leaked CO 2 rises into sub-seabed sand sediments under high pressure and low temperature, allowing stable CO 2 into a hydrates to form. To access this option, a series of numerical models are proposed in this study to predict CO 2 migration and hydrate formation in the sand sediment under the condition of gas-liquid two-phase flow in both reservoir scale and microscopic scale. This study can also provide tools to know where hydrate is formed in the pore of porous media and to reveal the mechanism of permeability reduction due to hydrate formation. |
| Databáze: | OpenAIRE |
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