摘要
二氧化碳地质储存是实现二氧化碳减排的有效手段,砂岩储层是二氧化碳地质储存的主要储层类型之一。砂岩储层中的绿泥石溶解对二氧化碳地质储存形式和储存量有着重要的影响。依据某砂岩储层的实测资料,采用数值模拟技术,分析了绿泥石作用下CO2矿物封存机理和绿泥石含量对CO2的矿物封存量的影响。研究结果表明,绿泥石体积分数增大,溶解后可以向溶液中提供更多的Mg2+、Fe2+,有利于固碳矿物菱铁矿和铁白云石生成;绿泥石的体积分数与CO2矿物封存量有良好的正相关性,高绿泥石含量有助于砂岩储层的CO2矿物捕获。
CO2 geological sequestration is a direct and effective mean to reduce carbon dioxide emissions,and sand-stone reservoir is one of the most important storage type in the process of CO2 geological storage.The dissolution of chlorite has important influence on the storage form and storage capacity in sandstone reservoir.This paper use nu-merical simulation technology,analysing the mechanism and the influence of chlorite on mineral trapping of CO2 , based on the measured date of a sandstone reservoir.The simulations demonstrate that the dissolution of chlorite could supply more Mg2 ＋ and Fe2 ＋ to the reservoir along with the increase of chlorite volume fraction,which con-duces to the formation of carbon sequestration mineral,such as siderite and ankerite.And the volume fraction of chlorite has a good positive correlation with mineral trapping of CO2 ,indicating that high chlorite content contrib-utes to the mineral trapping of CO2 in the sandstone reservoir.
出处
《矿物岩石地球化学通报》
CAS
CSCD
北大核心
2014年第2期201-207,共7页
Bulletin of Mineralogy, Petrology and Geochemistry
基金
中国地质调查局应对全球气候变化地质研究工作项目(12120113006300)
鄂尔多斯盆地(宁夏)能源基地地下水勘察项目(1212011121162)
关键词
二氧化碳地质储存
绿泥石
数值模拟
矿物封存量
CO2 geological storage
chlorite
numerical simulation
content of mineral trapping
