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O2注埋层变形类比实验材料性质研究

Research of Analogy Experiment Material Properties of CO2 Injection Buried Layer Deformation

中文摘要英文摘要

为了通过相似模拟实验研究CO2注入煤层过程中储盖层的变形和应力场变化特征,需研究替代煤层的材料止水条(遇水膨胀橡胶)的吸水膨胀与煤吸附CO2膨胀之间的相关性。为此开展了止水条完全浸水实验和无约束条件下止水条一端注水实验,将止水条的吸水膨胀实验结果与已有的煤吸附CO2膨胀结果进行对比。结果表明止水条吸水膨胀与煤层吸附CO2膨胀具有很好的正相关性,可以用止水条代替煤层,利用止水条吸水的过程来模拟CO2注入煤层的过程,进而开展研究CO2注入煤层过程中储盖层的变形、应力变化规律的相似模拟实验,研究CO2煤层安全封存的相关条件。这对CO2煤层封存安全性研究具有一定的意义。

In order to study the reservoir caprock's deformation and the variation characteristics of field of stress in the process of injecting CO2 to coal with the similar simulation experiment, it's necessary to study the relativity of imbibitions of the water bar(WSR) ,which substitute for coal seam, and coal seam's adsorption for CO2. To this end, experiments of full immersion and unconstrained condition end-to-end flood to water bar was carried out, and compared the results of experiments and the existing results of coal's adsorption for CO2. The research demonstrates that there is a well correlation between imbibition of the water bar and the expansion of adsorption of coal seam for CO2, and it's feasible to substitute the water bar for coal seam. Having simulating the course of injecting of CO2 to coal seam by the course of water absorption of the water bar, carried out the simulate experiments to research the changing rule of deformation and stress of reservoir cap when injecting CO2 to coal seam, and then studied the conditions of security of CO2 coal storage. It's meaningful for researching the security of CO2 coal storage.

朱立、刘卫群、董研、桑盛

矿业工程理论与方法论矿山安全、矿山劳动保护环境质量管理

固体力学O2煤层封存吸附膨胀变形类比实验相似材料

solid mechanicsO2 sequestrationadsorption swellingdeformationanalogy experimentsimilar materials

朱立,刘卫群,董研,桑盛.O2注埋层变形类比实验材料性质研究[EB/OL].(2016-05-20)[2025-08-18].http://www.paper.edu.cn/releasepaper/content/201605-839.点此复制

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