【作者】 曾荣树； 田兴有； 徐文东； 王舒； 金超；

【Author】 Zeng Rongshu Tian Xingyou Xu Wendong Wang Shu Jin Chao (Key Laboratory of Engineering Geomechanics,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029)

【机构】 中国科学院地质与地球物理研究所工程地质力学重点实验室；

【摘要】 以CO₂地质埋存的观点开展华北平原CO₂埋存地质学研究,通过对主要地质要素的分析,阐述冀中坳陷的地质背景和构造演化,提出在华北平原具有3层区域性的CO₂封盖-储存结构:即顶层馆陶组-明化镇组组合,中层古近系多次湖盆演化形成的储盖组合以及底层古潜山碳酸盐岩储层,并且对它们的岩石性质、圈闭类型与水文地质特征进行较详细的论述,同时讨论了埋存地区的构造稳定性,初步评估冀中坳陷CO₂埋存潜力,建议将冀中坳陷列为CO₂地下封存的试验候选区。更多还原

【Abstract】 From viewpoint of CO₂ storage underground,the geological characteristics of Jizhong Depression were studied, including its geological background and tectonic evolution.It is proposed that there are three sets of sequences that can be used to store CO₂:the upper sequence which is composed of Minghuazhen Group and Guantao Group of Neogene age,the middle sequence which consists of sediments formed during the lacustrine stage in Paleogene,and the lower sequence composed of carbonate reservoir.The rock properties,trap types,hydrogeological feature and structural stability were discussed as well.Potential CO₂ storage capacity was evaluated.The storage capacity was 5.73×10⁸-9.53×10⁸ tons CO₂ in buried hills and more than 1 billion tons in Guantao Group.The authors suggested that Jizhong Depression could be a candidate site for CO₂ storage underground.更多还原