CO_2地质埋存后的逃逸问题研究进展
ADVANCES IN CO_2 ESCAPE AFTER SEQUESTRATION
查看参考文献54篇
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文摘
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中国的温室气体排放目前已排世界第一,对环境是严重的威胁.CO_2地质埋存是温室气体资源化利用及减少大气温室气体排放量的有效途径之一,但是在地质埋存后,CO_2一旦逃逸会引起地表的隆起或凹陷、污染水源、破坏海洋生态系统等系列灾害,并使温室气体埋存效果毁于一旦.本文在对CO_2埋存问题简要介绍的基础上,重点对埋存后CO_2逃逸问题的研究现状作综述.阐述了CO_2埋存后通过盖层渗流和扩散、废弃井的渗透等逃逸方式,以及主要的控制参数,包括盖层渗透逃逸、扩散逃逸、油井及裂隙逃逸等方面的参数.通过分析,提出了需要进一步研究的问题,主要有:(1)控制CO_2逃逸的主要参数需要通过模型实验确定;(2)需要建立考虑化学反应、地层特征和井口分布特征的多相渗流模型;(3)在CO_2逃逸方面除要考虑扩散、渗流效应外,还要考虑井口分布、高气压引起的劈裂导致的渗透性急剧增加的效应等因素的影响 |
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其他语种文摘
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The emission of greenhouse gas in China has now become the first in the world which is also a heavy threat to the environment. Storage of carbon dioxide is one of the effective methods for utilizing greenhouse gas and reducing greenhouse gas discharge. However, escape of carbon dioxide through the cap rock after sequestration will cause severe disasters such as rising or sinking of the ground, water pollution, disaster of oceanic ecosystem, and meanwhile cause the sequestration of greenhouse gas to be destroyed in one day. In this paper, advances of studies on the carbon dioxide and escape are mainly summarized based on a simple presentation of the sequestration of carbon dioxide. First, escape forms of carbon dioxide by way of seepage and diffusion through the cap rock and the abandoned wells are presented. And then key parameters related to the seepage and diffusion through the cap rock are identified, and the seepage through wells and fractures are analyzed. Three important problems are thought to be in urgent need of further investigatation:(1)Basic parameters in carbon dioxide escape are needed to determine by model experiments.(2)Models of multi-phase flows are needed with chemical reaction, sediment's characteristics or well's distribution characteristics taken into consideration.(3)Not only diffusion and seepage, but also well's distribution and crack formation by high gas pressure are needed to consider in the study on escape of carbon dioxide |
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来源
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力学进展
,2010,40(5):517-527 【核心库】
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关键词
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CO_2埋存
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逃逸
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渗透
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扩散
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地层破坏
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地址
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1.
中国科学院力学研究所, 北京, 100190
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中国石油勘探开发研究院, 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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综述型 |
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ISSN
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1000-0992 |
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学科
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力学 |
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基金
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国家973计划
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文献收藏号
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CSCD:3983798
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