摘要
在当前全球气候变化和环保压力加大的背景下,CO_(2)封存工程作为切实有效的减排工程手段,引发了广泛关注。海上咸水层具有分布广泛、储量巨大等特点,逐渐成为碳封存研究的焦点。为探究咸水层CO_(2)封存的基本规律,本文选取了西江油田场地作为靶区,基于TOUGHREACT数值模拟软件,研究了场地参数取值对CO_(2)迁移规律及长期封存机理的影响。结果表明,在迁移规律方面,孔隙度、渗透率、储层温度和压力等参数都对CO_(2)羽流迁移距离有明显影响,这意味着在实际进行CO_(2)封存时,需要足够重视这些参数的测量,以确保封存的安全性和效率。同时,在长期封存方面,场地绿泥石含量对矿化封存量有明显影响,因此,实际工程中可能需要重点考虑场地的绿泥石含量,选取绿泥石含量较高的场地区域,以提高矿化封存的效果,从而实现更有效的长期封存。
In the current context of global climate change and increasing pressure on environmental protection,carbon dioxide storage projects have attracted widespread attention as a practical and effective means of emission reduction engineering.The offshore saline aquifer has the characteristics of wide distribution and huge reserves,and has gradually become the focus of carbon sequestration research.In order to explore the fundamental mechanisms of carbon dioxide sequestration in saline aquifers,this paper selected the Xijiang Oilfield site as the target area and simulated it using TOUGHREACT numerical simulation software to study the impact of site parameter values on CO_(2)migration rules and long-term sequestration mechanism.The results show that in terms of migration rules,parameters such as porosity,permeability,reservoir temperature and pressure all have a significant impact on the migration distance of CO_(2)plumes.This implies that accurate measurement of these parameters is crucial during actual CO_(2)sequestration projects to ensure both safety and efficiency.At the same time,in terms of long-term sequestration,the chlorite content of the site has a significant impact on mineral trapping capacity.Therefore,in actual projects,it may be necessary to focus on the chlorite content of the site and select regions with relatively high chlorite content to enhance mineral trapping efficiency,thereby achieving more effective long-term sequestration.
作者
陶中毅
张锦涌
洪义
李琦
宣涛
高波
TAO Zhongyi;ZHANG Jinyong;HONG Yi;LI Qi;XUAN Tao;GAO Bo(Ocean College,Zhejiang University,Zhoushan 316021,Zhejiang,China;Department of Architecture and Civil Engineering,Zhejiang University,Hangzhou 310058,Zhejiang,China;Institute of Rock and Soil Mechanics,Chinese Academy of Sciences,Wuhan 430071,Hubei,China;Clean Energy Fuels Corporation of CNOOC Energy Technology&Services Limited,Tianjin 300450,China)
出处
《地基处理》
2025年第4期360-367,共8页
Journal of Ground Improvement
基金
国家自然科学基金(52122906,52306205)。
