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CO2基增强型地热系统中流体-花岗岩相互作用研究进展及展望

薛卉 舒彪 陈科平 路伟 张森 胡永鹏

薛卉, 舒彪, 陈科平, 路伟, 张森, 胡永鹏. CO2基增强型地热系统中流体-花岗岩相互作用研究进展及展望[J]. 地质科技通报, 2021, 40(3): 45-53. doi: 10.19509/j.cnki.dzkq.2021.0021
引用本文: 薛卉, 舒彪, 陈科平, 路伟, 张森, 胡永鹏. CO2基增强型地热系统中流体-花岗岩相互作用研究进展及展望[J]. 地质科技通报, 2021, 40(3): 45-53. doi: 10.19509/j.cnki.dzkq.2021.0021
Xue Hui, Shu Biao, Chen Keping, Lu Wei, Zhang Sen, Hu Yongpeng. Research progress of fluid-granite interaction in CO2 based enhanced geothermal system[J]. Bulletin of Geological Science and Technology, 2021, 40(3): 45-53. doi: 10.19509/j.cnki.dzkq.2021.0021
Citation: Xue Hui, Shu Biao, Chen Keping, Lu Wei, Zhang Sen, Hu Yongpeng. Research progress of fluid-granite interaction in CO2 based enhanced geothermal system[J]. Bulletin of Geological Science and Technology, 2021, 40(3): 45-53. doi: 10.19509/j.cnki.dzkq.2021.0021

CO2基增强型地热系统中流体-花岗岩相互作用研究进展及展望

doi: 10.19509/j.cnki.dzkq.2021.0021
基金项目: 

国家自然科学基金面上项目 42072304

国家自然科学基金青年基金项目 41702387

详细信息
    作者简介:

    薛卉(1990-), 女, 现正攻读地质工程专业硕士学位, 主要从事水文地质与工程地质及非常规能源开采等方面的研究工作。E-mail: 422766340@qq.com

    通讯作者:

    舒彪(1986-), 男, 副教授, 硕士生导师, 主要从事岩石力学及非常规能源开采等方面的研究工作。E-mail: biaoshu@csu.edu.cn

  • 中图分类号: P588.12+1;P641.3

Research progress of fluid-granite interaction in CO2 based enhanced geothermal system

  • 摘要: CO2与水相比,膨胀性大、黏度低、与岩石反应程度低,并且在作为增强型地热系统(EGS)渗流传热流体时,比水具有更高的换热效率。对CO2-EGS生产过程中储层岩石物性变化的研究具有重要意义,从理论研究、实验研究、数值模拟3个方面,对CO2基增强型地热系统CO2-EGS中流体-岩石相互作用的研究现状进行了总结,并且从矿物成分、微观孔结构和力学性质3个方面对储层岩石性质的变化进行了评价。结果表明,CO2-水-岩石相互作用参与反应的矿物主要为石英、长石类;而沉淀的矿物为蒙脱石、伊利石及方解石等。CO2-水-岩石相互作用会导致储层岩石的力学性质下降,孔隙结构特征改变。最后,讨论了CO2作为EGS渗流传热流体仍需攻克的难点问题,包括:CO2的热动力学特征、换热效率,CO2-水-岩石的相互作用及其对储层性质的改变,影响CO2-EGS经济性的因素,以及CO2-EGS数值模型的研究等。针对这些方面的研究可为今后CO2-EGS的开发奠定基础。

     

  • 图 1  CO2-EGS储层区域划分示意图(据文献[24])

    Figure 1.  Schematic diagram of regional division of CO2-EGS reservoir

    图 2  国内外期刊在EGS、CO2-EGS领域的研究成果

    Figure 2.  Annual publication volume of domestic and foreign journals in the fields of EGS and CO2-EGS

    图 3  CO2-EGS不同研究方向的研究成果

    Figure 3.  Publications of different research directions of CO2-EGS

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