CO2地质封存中重力对气水两相流动特性影响研究
Study on the Effect of Gravity on Gas-Water Two-Phase Flow Characteristics in CO2 Geological Storage
王思佳 1李少华 1吕鹏飞 2刘瑜 1宋永臣 1蒋兰兰1
作者信息
- 1. 大连理工大学海洋能源利用与节能教育部重点实验室,大连 116024
- 2. 中北大学能源与动力工程学院,太原 038507
- 折叠
摘要
CO2地质封存技术是缓解温室气体排放的一种有效手段,亚岩心尺度CO2-水在多孔介质内的流动实验对阐明CO2地质封存中的残余捕集过程的封存潜力预测具有重要意义.本文利用高压微流控芯片在毛细管数为2.37×10-5条件下进行了CO2驱替纯水的实验,以研究重力对气水两相流动的影响.实时采集到了两相在非均质孔隙内的分布形态和流动特点,进一步的对CO2饱和度进行了量化和评估了 CO2的封存容量,阐明了重力对CO2残余捕集过程的影响.
Abstract
CO2 geological storage technology is an effective method to reduce greenhouse gas emis-sions,subcore-scale CO2-water flow experiments within porous media are important to elucidate the residual capture process in CO2 geological storage for prediction of storage potential.In this paper,experiments on CO2 flooding were conducted using a high-pressure microfluidic chip at a capillary number of 2.37x10-5 to investigate the effect of gravity on the flow of gas and water phases.The distribution pattern and flow characteristics of the two phases in the non-homogeneous pores were collected in real time,further quantifying the CO2 saturation and assessing the CO2 storage capacity,and elucidating the effect of gravity on the CO2 residual capture process.
关键词
CO2封存/两相流/孔隙尺度/微流控Key words
CO2 storage/two phase flow/pore scale/microfluidics引用本文复制引用
基金项目
国家重点研究研发计划(2016YFB0600804)
国家自然科学基金(51506024)
国家自然科学基金(51706154)
国家自然科学基金(51976023)
辽宁省自然科学基金(2019-MS-061)
出版年
2024
NETL
NSTL
万方数据