Development of the method to remedy leakage from geological CO2 reservoir using CO2 reactive grout

开发利用CO2活性灌浆修复CO2地质储层渗漏的方法

• 批准号: 21360442
• 负责人: ITO Takatoshi
• 金额: $ 9.57万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21360442/
• 关键词: 廃棄物地下保存; 処分; 地球温暖化ガス排出削減; 大深度地下; 環境技術

In order to remedy CO_2 leakage through pre-existing and/or induced fractures from storage reservoirs, we studied a concept to use an aqueous solution. The solution will have a sufficiently-low viscosity for passing through even small aperture, and it will not impact formation permeability as long as the solution is left as it is. When the solution encounters dissolved CO_2, precipitation will occur due to chemical reaction. As a result, the permeability will be reduced by filling the pores and fractures in the rocks with the precipitates. We demonstrated first this idea through laboratory experiments simulating subsurface condition at 1000 m deep, i. e. 10 MPa and 40 deg. C. The results show that the present method led to a 99 %permeability reduction in a glass-bead artificial rock even its initially-high permeability of few darcy. Such reduction of permeability was reproduced successfully by the non-isothermal reactive geochemical transport program TOUGHREACT. Based upon these success, the present method was applied by numerical modeling to a 2-D caprock-aquifer system under field physical and chemical conditions. The results show that the precipitates were produced and they filled up pores around outlet of the leakage path so sufficiently that the CO_2 migration was blocked, and the condition was confirmed stable over a long time.

为了通过储存库中的预先存在和/或诱导的裂缝来解决CO_2泄漏，我们研究了一个概念以使用水溶液。该溶液将具有足够低的粘度，即可通过较小的光圈，并且只要溶液留下溶液，它就不会影响形成渗透性。当溶液遇到溶解的CO_2时，由于化学反应而发生降水。结果，通过填充岩石中的孔和裂缝，将渗透性降低。我们首先通过实验室实验模拟1000 m深的地下条件的实验实验证明了这一想法。 e。 10 MPA和40度。 C.结果表明，目前的方法导致玻璃珠人造岩石的渗透率降低了99％，即使是最初的少量darcy的最初渗透性也是如此。这种降低的渗透性通过非等温反应性地球化学运输程序进行了成功而成功地重现了这种渗透性。基于这些成功，目前的方法是通过数值建模在现场物理和化学条件下的2-D Caprock-aquifer系统应用的。结果表明，产生了沉淀物，它们充分填充了泄漏路径的出口周围的毛孔，以至于CO_2迁移被阻塞，并在很长一段时间内证实了这种情况稳定。

项目成果

CO2地中貯留層からの原位置反応法による漏洩修復と数値シミュレーションによる検討

CO2 地下水库泄漏原位反应修复及数值模拟研究

• 发表时间: 2010
• 作者: 田中秀宜;伊藤高敏;関根孝太郎;Xu;T.
• 通讯作者: T.

CO2地中貯留層からの漏洩修復法の検討

CO2地下水库渗漏修复方法探讨

• 发表时间: 2009
• 作者: 田中秀宜;櫻井雅徳;関根孝太郎;伊藤高敏
• 通讯作者: 伊藤高敏

Proposed Concept of In-situ Reaction Barrier to Remedy Leakage from Reservoirs of Geological CO2 Storage(招待講演)

提出原位反应屏障修复CO2地质封存储层泄漏的概念（特邀报告）

• 发表时间: 2010
• 作者: H. Asanuma;Y. Mukuhira;H. Niitsuma;M. Haring;伊藤高敏
• 通讯作者: 伊藤高敏

Proposed Concept of In-situReaction Barrier to Remedy Leakagefrom Reservoirs of Geological CO2Storage

提出原位反应屏障修复地质CO2储存库泄漏的概念

• 发表时间: 2010
• 作者: 濱由邦裕;北村充;他;T. Ito
• 通讯作者: T. Ito

CO2貯留層からの漏洩修復法とそのケーススタディー

CO2储库泄漏修复方法及实例

• 发表时间: 2011
• 作者: 谷内雄紀;田中秀宜;伊藤高敏;Xu;T.
• 通讯作者: T.