摘要
在CO2地质储存中,储层温度是影响CO2矿物储存量的因素之一。文章选取美国Gulf Coast地区的资料,并设置6种温度敏感性分析方案,使用TOUGHREACT/ECO2N软件模拟分析了温度变化对CO2矿物捕集的影响,得出以下结论:长石类矿物、高岭石、绿泥石是主要的溶解矿物,方解石并非主要的溶解矿物;主要固碳矿物为铁白云石和片钠铝石,两者与绿泥石存在较好的相关性,并且沉淀量与温度变化正相关;CO2体积分数随时间变化幅度和矿物捕获总量均与温度呈正相关。通过分析储层温度对矿物捕获CO2的影响,为选取CO2储层提供温度上的考量。
In the mineral reserves. geological storage of carbon dioxide, reservoir temperature is one of the factors affecting CO2 Based on the information of Gulf Coast, United States, this paper sets up 6 kinds of temperature sensitivity analysis schemes to simulate and analyze the effect of temperature on CO2 mineral trapping with TOUGHREACT/ECO2N software. The results indicate that feldspar mineral and kaolinite and chlorite are the main dissolved minerals and calcite is not the main dissolved mineral. Ankerite and dawsonite are the major carbon sequestration minerals. Thay are in a good correlation with chlorite and their amount of precipitation will increase as temperature rises. Time-varying amplitude of CO2 volume fraction and mineral capture aggregates are positively correlated with temperature. The analysis results of influence of reservoir temperature on CO2 mineral capture may provide the temperature consideration for selection of CO2 reservoir.
出处
《水文地质工程地质》
CAS
CSCD
北大核心
2014年第1期101-105,共5页
Hydrogeology & Engineering Geology
基金
国土资源部公益性行业科研专项项目(201211063)
