摘要
“双碳”目标的提出与电解水制氢技术的突破,使得具有比能大、可储和可再生优势的氢能成为关注的热点,但氢气的大规模储存是目前面临的最大难点。在综述地下储氢研究现状的基础上,讨论了多孔介质储氢中氢气封存效率和上覆盖层密封性的影响因素,分析了氢气自身物理性质、储层岩石矿物成分、地下储存环境等因素对氢气-咸水-岩石地球化学相互作用及氢气对盖层密封性的影响。结果表明:在原位应力条件下,偏高的温度、压力与有机酸的存在均有利于储氢盖层的密封性;氢气-咸水-岩石地球化学反应复杂,其中与碳酸盐矿物反应较为剧烈,对岩石孔隙结构和储层环境的影响较大,选择富含石英等硅酸盐矿物的储层或无碳酸盐的砂岩可以减小反应程度;对于地下储氢,含水层中生物化学反应发生概率极大,且对氢气消耗量较高,生成的矿物沉淀可能降低注采效率。
The Chinese government’s“double carbon target”and the breakthrough of electrolysis water hydrogen production technology make hydrogen energy with the advantages of large specific energy,storability,and renewability,become a hot issue.In order to promote the development of underground hydrogen storage technology,this paper reviews the current research status of underground hydrogen storage in the world,discusses the influencing factors and challenges of hydrogen sealing efficiency and upper cover sealing in porous media hydrogen storage,and analyzes the effects of hydrogen’s own physical properties,reservoir rock mineral composition,underground storage environment on the hydrogen-saltwater-rock geochemical interaction and its influence on the cover sealing.The results show that under in-situ stress conditions,the existence of appropriate and high temperature,pressure and organic acid is conducive to the sealing of hydrogen storage cap,the hydrogen-saltwater-rock geochemical reaction is complex,the reaction with carbonate minerals is more intense,which has a greater impact on the rock pore structure and reservoir environment,the selection of reservoirs rich in quartz and other silicate minerals or carbonatefree sandstone can reduce the degree of reaction,and the biochemical reactions in the aquifer are highly likely to occur and consume a lot of hydrogen,which may result in mineral precipitation that could reduce the injection efficiency for underground hydrogen storage.
作者
李越
冯鲲鹏
王惠民
LI Yue;FENG Kunpeng;WANG Huimin(College of Water Conservancy&Hydropower Engineering,Hohai University,Nanjing 210098,China)
出处
《油气与新能源》
2024年第3期51-59,共9页
Petroleum and new energy
基金
国家自然科学基金青年项目“泥岩盖层孔隙尺度湿润性动态演化机理及碳封存安全性研究”(522025911)
中国博士后基金面上项目“基于核磁共振耦合实时渗流的泥岩盖层湿润性动态演化机理研究”(42336702)
南京市留学人员科技创新择优资助项目“基于二维核磁共振技术的CO_(2)地质封存安全性评价方法研究”(B2304803)。
关键词
地下储氢
多孔介质
润湿性
地球化学反应
Underground hydrogen storage
Porous media
Wettability
Geochemical reactions
