A Study on Long-term Stability of CO2 Geological Sequestration

CO2地质封存长期稳定性研究

基本信息

  • 批准号:
    13450414
  • 负责人:
  • 金额:
    $ 4.86万
  • 依托单位:
  • 依托单位国家:
    日本
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
  • 财政年份:
    2001
  • 资助国家:
    日本
  • 起止时间:
    2001 至 2003
  • 项目状态:
    已结题

项目摘要

The increase in discharge of carbon dioxide is considered as a factor of global warming, and various sequestration technologies are studied. However, the long-term behavior of carbon dioxide is not well understood. The carbon dioxide injected into underground aquifer is stabilized as a gaseous phase, a liquid phase, or a solid phase. The carbon dioxide dissolved in the liquid phase spreads by convection-dispersion phenomena in the aquifer. It is necessary to evaluate the influence of pore-level heterogeneity on the flow behavior. In this research, the experiment using sandstone, carbonate rock, and a pack of glass bead was conducted. A convection-dispersion (CDE) model and the Coats-Smith model were adopted as a flow model, and matching with an experiment result was performed. Application of ODE was successful for a pack of glass bead and sandstone. Moreover, it has been confirmed that the dispersion coefficient was proportional to the flow velocity regardless of the kind of sample. On the other hand, application of CDE was not successful for the dolomite. This is because the secondary pore and the pore-level heterogeneity. When the Coats-Smith model reflecting the heterogeneity was applied, the good matching result was obtained. A large amount of stagnation portion exists in the sample, and it turned out that the rock which has the pore-level heterogeneity may have a large dispersion coefficient compared with the rock and the glass bead without such heterogeneity. When using flow simulators which models dispersion by ODE, using the dispersion coefficient obtained from the Coats-Smith model may result in erroneous predictions. To obtain acceptable-prediction results, it is. necessary to set up an apparent coefficient that is larger than the actual
二氧化碳排放量的增加被认为是全球变暖的一个因素,并研究了各种封存技术。然而,二氧化碳的长期行为还没有得到很好的理解。注入地下含水层的二氧化碳被稳定为气相、液相或固相。溶解在液相中的二氧化碳通过对流-扩散现象在含水层中扩散。因此,有必要研究孔隙非均质性对渗流特性的影响。本研究以砂岩、碳酸盐岩及一组玻璃微珠为实验材料,进行实验研究。采用对流-扩散(CDE)模型和Coats-Smith模型作为流动模型,并进行与实验结果的匹配。对玻璃微珠和砂岩填料进行了数值模拟,取得了较好的效果.此外,已经证实,分散系数与流速成正比,而与样品的种类无关。另一方面,CDE在白云石中的应用并不成功。这是由于次生孔隙和孔隙级非均质性造成的。采用反映非均匀性的Coats-Smith模型进行拟合,取得了较好的拟合效果。在样品中存在大量的停滞部分,并且事实证明,与没有这种不均匀性的岩石和玻璃珠相比,具有孔隙水平不均匀性的岩石可能具有大的分散系数。当使用通过ODE模拟分散的流动模拟器时,使用从Coats-Smith模型获得的分散系数可能导致错误的预测。为了获得可接受的预测结果,它是。必须设置一个表观系数大于实际

项目成果

期刊论文数量(30)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Sato, K.: "Modelling Infinite-conductivity Line Sinks in the Complex Variable Boundary Element Method"Communications in Numerical Methods in Engineering. Vol.20. 43-49 (2004)
Sato, K.:“用复变边界元法模拟无限电导率线汇”工程数值方法通讯。
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    0
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Sato, K.: "Complex Variable Boundary Element Method for Potential Flow with Thin Objects"Computer Methods in Applied Mechanics and Engineering. Vol.192,No.11-12. 1421-1433 (2003)
Sato, K.:“薄物体势流的复变边界元法”应用力学和工程中的计算机方法。
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    0
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Sato, K.: "Modeling of Hydrodynamic Dispersion and Two-phase Flow in the Complex Variable Boundary Element Method"Computer Methods in Applied Mechanics and Engineering. Vol.192. 4425-4438 (2003)
Sato, K.:“复杂变量边界元法中的流体动力分散和两相流建模”应用力学和工程中的计算机方法。
  • DOI:
  • 发表时间:
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    0
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Sato, K.: "Inclusion of Hydrodynamic Dispersion in Fluid Flow Computations using the Complex Variable Boundary Element Method"J of the Japan Petroleum Institute. Vol.46. 272-279 (2003)
Sato, K.:“使用复变边界元法在流体流动计算中包含流体动力学分散”,日本石油学会杂志。
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
  • 作者:
  • 通讯作者:
Sato, K.: "Modeling Infinite-conductivity Line Sinks in the Complex Variable Boundary Element Method"Communications in Numerical Methods in Engineering. Vol.20. 43-49 (2004)
Sato, K.:“用复变边界元法模拟无限电导率线汇”工程数值方法通讯。
  • DOI:
  • 发表时间:
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  • 影响因子:
    0
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SATO Kozo其他文献

SATO Kozo的其他文献

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{{ truncateString('SATO Kozo', 18)}}的其他基金

Sustainable Carbon Cycle for Mitigating Carbon Dioxide Emission and Regenerating Energy Resources
减少二氧化碳排放和再生能源的可持续碳循环
  • 批准号:
    20246128
  • 财政年份:
    2008
  • 资助金额:
    $ 4.86万
  • 项目类别:
    Grant-in-Aid for Scientific Research (A)
Sustainable carbon cycle toward mitigation of carbon dioxide emission and regeneration of hydrocarbon resources
可持续碳循环,以减少二氧化碳排放和碳氢化合物资源再生
  • 批准号:
    17206090
  • 财政年份:
    2005
  • 资助金额:
    $ 4.86万
  • 项目类别:
    Grant-in-Aid for Scientific Research (A)
Preventive Effect of YM175 on Steroid-induced Osteopenia in Rats
YM175对类固醇诱导的大鼠骨质减少的预防作用
  • 批准号:
    07671563
  • 财政年份:
    1995
  • 资助金额:
    $ 4.86万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Effect of Administration of h-PTH and Estrogen in Experimental Osteoporosis
h-PTH 和雌激素给药对实验性骨质疏松症的影响
  • 批准号:
    03670694
  • 财政年份:
    1991
  • 资助金额:
    $ 4.86万
  • 项目类别:
    Grant-in-Aid for General Scientific Research (C)
Experimental Study of Osteoporosis
骨质疏松症的实验研究
  • 批准号:
    63570693
  • 财政年份:
    1988
  • 资助金额:
    $ 4.86万
  • 项目类别:
    Grant-in-Aid for General Scientific Research (C)

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