摘要
碳捕集利用和封存(CCUS)技术是实现全球碳中和不可或缺的技术,开展CO_(2)地质封存(CCS)工作有助于实现碳中和的目标。中国东部沿海发达城市分布众多发电厂、炼化厂等CO_(2)大排放源,对CO_(2)封存需求较高。为缓解地区CO_(2)排放压力,挖掘东部沿海地区周围具有封存潜力的中小型沉积盆地,在搜集区域地质资料的基础上,选取浙江省杭州湾南岸的长河盆地作为研究对象,计算盆地封存潜力,并分析中小盆地封存试点意义。根据沉积盆地CO_(2)地质储存潜力评价方法,计算盆地咸水层CO_(2)地质封存潜力,评价结果表明,长河盆地具有较好的咸水层CO_(2)地质封存潜力。盆地最具封存潜力的是古近系长河组二段(Ech^(2))中的第一砂岩层和长河组一段(Ech^(1))中的砂砾岩层,预期理论封存量为4.84亿t,有效封存量可以达到1 162.61万t。研究结果表明,开展中小沉积盆地CO_(2)地质封存工程试点,可在一定程度上缓解沿海地区和企业碳排放压力,为海域碳封存积累技术和经验。
Carbon capture,utilization,and storage(CCUS)technology is indispensable for achieving global carbon neutrality,and the development of CO_(2) geological storage(CCS)will help China to achieve the goal of carbon neutrality.Developed cities along the eastern coast of China have many power plants,refineries,and other large sources of CO_(2) emissions,which have a high demand for CO_(2) storage.To alleviate the pressure of regional CO_(2) emission and to excavate small-and medium-sized sedimentary basins with storage potentials around the eastern coastal area,we selected the Changhe Basin on the south coast of Hangzhou Bay in Zhejiang Province as a research object.Using regional geologic data,we calculated the basin storage potential,and evaluated the significance of pilot small-and medium-sized basins for storage.According to the evaluation of CO_(2) geological storage potential of sedimentary basins,we calculated the basin-wide geological storage potential of CO_(2) in the saline layer of the basin.Results show that the Changhe Basin has a high potential for CO_(2) geological storage in deep saline aquifer.The most potential layers for CO_(2) storage are the first sandstone layer in the 2nd Member(Ech^(2)),and the sandstone and conglomerate layers in the 1st Member(Ech^(1))of the Paleogene Changhe Formation.The theoretical CO_(2) storage capacity could reach 484 million tons and the effective storage capacity is 11.62 million tons.The study showed that the carrying out pilot CO_(2) geological storage projects in small-and medium-sized sedimentary basins can alleviate the pressure of carbon emissions from the coastal areas and enterprises to a certain extent.At the same time,it can accumulate technology and experience for marine geological carbon storage.
作者
陈越
杨娇娇
李雪
王建强
曹珂
李昂
吕清
陈俊兵
韩国志
CHEN Yue;YANG Jiaojiao;LI Xue;WANG Jianqiang;CAO Ke;LI Ang;LYU Qing;CHEN Junbing;HAN Guozhi(Zhejiang Institute of Hydrogeology and Engineering Geology,Ningbo 315100,China;Zhoushan Field Scientific Observation and Research Station for Marine Geo-hazards,China Geological Survey,Qingdao 266237,China;China University of Geosciences(Wuhan),Wuhan 430074,China;Qingdao Institute of marine geology,China Geological Survey,Qingdao 266237,China;Zhejiang Engineering Survey and Design Institute Group Co.Ltd.,Ningbo 315100,China;Daqing Oilfield Co.Ltd.First Oil Production Plant,Daqing 163000,China)
出处
《海洋地质前沿》
CSCD
北大核心
2024年第8期1-11,共11页
Marine Geology Frontiers
基金
浙江省自然资源厅项目“浙江省地质碳汇调查、监测及应用试点”
中国地质调查局舟山海洋地质灾害野外科学观测研究站开放基金(ZSORS-22-17)。
关键词
东部沿海
沉积盆地
CO_(2)地质封存
咸水层
碳中和
east Zhejiang coastal area
sedimentary basins
CO_(2)geological storage
saline aquifer
carbon neutral
