CCS工程中盖层渗透率对CO_2逃逸的影响
THE EFFECT OF CAPROCK PERMEABILITY ON THE LEAKAGE OF CO_2 IN A CO_2 CAPTURE AND STORAGE PROJECT~1)
查看参考文献12篇
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文摘
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针对CO_2埋存后可能存在的逃逸问题进行了分析, 在对ABAQUS商用软件进行二次开发的基础上, 针对各个因素进行了计算; 并对简单情况进行了理论推导, 验证了数值模型的正确性.考虑到CO_2逃逸过程中可能发生相态变化, 数值模拟时分别采用理想气体状态方程和范德华方程以对结果进行比较, 结果表明, 在盖层均匀和通常的气藏条件下, CO_2完全渗漏需要l5xl0~4年以上; 盖层含井或有裂缝时会导致CO_2快速逃逸, 完全逃逸在lxl0~4年左右, 在选址时应该尽量避免 |
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其他语种文摘
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The leakage after CO_2 sequestration is critical in the evaluation of CO_2 storage period and the stability of the cap-rock. In this paper, the commercial FEM software ABAQUS is used with a secondary development to analyze the key factors of CO_2 seepage. Meanwhile the gas Vander-Walls equation is applied to the supercritical CO_2 compared to the ideal gas equation. A simple theoretical result is obtained and verified in a good agreement with that of simulation. The results show that at least 150000 years are needed until CO_2 escapes completely from a homogeneous cap-rock with a low permeability; the number storage duration is decreaseds tO 10000 years when there is a high permeability leaky well or fractures, hence, fractures or leaky wells should be consolidated before sequestration or kept away from.project areas |
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来源
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力学与实践
,2010,32(4):30-34 【扩展库】
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关键词
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CO_2地质埋存
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逃逸
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渗流
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地址
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1.
中国科学院力学研究所, 北京, 100190
2.
石油勘探开发研究院采收率研究所, 北京, 100083
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1000-0879 |
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学科
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石油、天然气工业 |
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基金
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国家重点基础研究发展计划(973计划)
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文献收藏号
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CSCD:3974919
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