CO_(2)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 CO_(2) Geological Storage

作　　者：王思佳 李少华 吕鹏飞 刘瑜[1] 宋永臣[1] 蒋兰兰[1] WANG Sijia;LI Shaohua;LU Pengfei;LIU Yu;SONG Yongchen;JIANG Lanlan(Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education,Dalian University of Technology,Dalian 116024,China;School of Energy and Power Engineering,North University of China,Taiyuan 030051,China)

机构地区：[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

出　　处：《工程热物理学报》2024年第3期845-849,共5页Journal of Engineering Thermophysics

基　　金：国家重点研究研发计划(No.2016YFB0600804);国家自然科学基金资助项目(No.51506024,No.51706154,51976023);辽宁省自然科学基金(No.2019-MS-061)。

摘　　要：CO_(2)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CO_(2)-水在多孔介质内的流动实验对阐明CO_(2)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CO_(2)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CO_(2)饱和度进行了量化和评估了CO_(2)的封存容量,阐明了重力对CO_(2)残余捕集过程的影响。CO_(2) geological storage technology is an effective method to reduce greenhouse gas emis-sions,subcore-scale CO_(2)-water flow experiments within porous media are important to elucidate the residual capture process in CO_(2) geological storage for prediction of storage potential.In this paper,experiments on CO_(2) flooding were conducted using a high-pressure microfluidic chip at a capillary number of 2.37×10^(−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 CO_(2) saturation and assessing the CO_(2) storage capacity,and elucidating the effect of gravity on the CO_(2) residual capture process.

关 键 词：CO_(2)封存 两相流 孔隙尺度 微流控 

分 类 号：TK019[动力工程及工程热物理]