Study on the trapping mechanisms in CO2 geo-sequestration based on pore scale imaging
Project/Area Number |
25281036
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Research Category |
Grant-in-Aid for Scientific Research (B)
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Allocation Type | Partial Multi-year Fund |
Section | 一般 |
Research Field |
Environmental engineering and reduction of environmental burden
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Research Institution | Tokyo Institute of Technology |
Principal Investigator |
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Project Period (FY) |
2013-04-01 – 2017-03-31
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Project Status |
Completed (Fiscal Year 2017)
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Budget Amount *help |
¥16,250,000 (Direct Cost: ¥12,500,000、Indirect Cost: ¥3,750,000)
Fiscal Year 2016: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2015: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2014: ¥6,760,000 (Direct Cost: ¥5,200,000、Indirect Cost: ¥1,560,000)
Fiscal Year 2013: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
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Keywords | 二酸化炭素 / 地下貯留 / トラップメカニズム / 溶解 / 対流 / 物質輸送 / 空隙スケール / X線CT / マイクロトモグラフィ / 比表面積 / 地球温暖化ガス排出削減 / エネルギー一般 / 環境技術 / 流体工学 / 多孔質 / 混相流 / 界面不安定性 |
Outline of Final Research Achievements |
One of the major concern of carbon dioxide capture and storage is potential risk of leakage due to buoyancy. In this study, we investigated the trapping mechanisms of CO2 based on microtomography. A physical model of initial gas saturation accompanied with the competition among the interfacial tension, viscous shear force, and buoyancy was proposed, because residual gas saturation depends strongly on the initial saturation. The onset time of the natural convection, which governs the shift to dissolution trapping, is strongly impacted by dispersion, which is apparent diffusion due to complex structure of porous media. Mass transport process from the trapped phase to mobile phase was investigated with the direct numerical simulations for pore scale images.
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Report
(5 results)
Research Products
(32 results)
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[Journal Article] Application of X-ray CT investigation of CO2-brine flow in porous media2015
Author(s)
Jiang, L., Liu, Y., Song, Y., Yang, M., Xue, Z., Zhao, Y., Zhao, J., Suekane, T., Shen, Z.
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Journal Title
Exp. Fluids
Volume: 56
Pages: 1-10
Related Report
Peer Reviewed / Int'l Joint Research
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