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盖层不确定性对CO2地质封存安全性的影响

, PP. 45-50

Keywords: CO2地质封存,盖层不确定性,数值模拟,CO2逃逸率

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Abstract:

通过建立江汉盆地新沟油田新沟嘴组储盖层的二维模型,对新沟油田进行了CO2地质封存数值模拟,研究了盖层厚度减薄、盖层不均一、盖层不连续等盖层不确定性对注入的CO2在储盖层中运移分布和溶解扩散的影响,并计算了不同情况下CO2的逃逸率。结果表明盖层厚度减薄和盖层不连续对CO2地质封存的安全性影响较大,而盖层不均一对其影响相对较小。

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