基于通量监测-CFD模拟的CO2驱油封存地表泄漏大气扩散研究

瞿常青; 林千果

doi:10.13809/j.cnki.cn32-1825/te.2024.06.009

油气藏评价与开发 >

2024 , Vol. 14 >Issue 6: 885 - 891

DOI: https://doi.org/10.13809/j.cnki.cn32-1825/te.2024.06.009

综合研究

基于通量监测-CFD模拟的CO₂驱油封存地表泄漏大气扩散研究

瞿常青 ,
林千果

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1.上海交通大学智慧能源创新学院，上海 200240
2.上海交通大学碳中和发展研究院，上海 200030
3.上海交通大学机动学院，上海 200240

瞿常青（1999—），男，在读硕士研究生，从事碳封存监测研究。地址：上海市闵行区东川路800号，邮政编码：200240。E-mail：changqingqu999@sjtu.edu.cn

林千果（1971—），男，博士，教授，从事碳捕集、利用与封存以及碳监测研究。地址：上海市徐汇区华山路1954号上海交通大学徐汇校区慧谷科技楼，邮政编码：200030。E-mail：qianguo.lin@sjtu.edu.cn

收稿日期: 2023-12-14

网络出版日期: 2024-12-10

基金资助

国家重点研发计划项目“区域二氧化碳捕集与封存关键技术研发与示范”(2022YFE0206800)

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Atmospheric diffusion study of surface leakage from CO₂ enhanced oil recovery with carbon capture and storage based on flux monitoring-CFD simulation

QU Changqing ,
LIN Qianguo

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1. College of Smart Energy, Shanghai Jiao Tong University, Shanghai 200240, China
2. Research Institute of Carbon Neutrality, Shanghai Jiao Tong University, Shanghai 200030, China
3. School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China

Received date: 2023-12-14

Online published: 2024-12-10

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摘要

CO₂驱油封存项目兼有提高石油采收率和封存CO₂的双重效益，是目前最有经济活力的碳封存形式。然而，驱油封存项目通常含有多个井场，这些井场由于井筒的高CO₂泄漏风险导致对区域有较大的安全和环境影响。针对以往基于井场点源泄漏大气扩散研究的不足，建立了一种基于井场面源通量监测的驱油封存项目地表泄漏大气CO₂扩散研究方法。基于情景分析的华东某油田案例应用表明：采用基于涡度相关法的CO₂泄漏通量监测可以获得整个井场的面源泄漏通量，为大范围CFD（计算流体力学）的模拟提供准确数据；多井场的CFD扩散模拟能够反映区域复杂的地形和多井场的泄漏，支撑来自井场泄漏的区域安全和环境风险管理。

关键词： CO₂驱油封存; CO₂泄漏; 涡度相关; 数值模拟; 大气扩散

本文引用格式

瞿常青 , 林千果 . 基于通量监测-CFD模拟的CO₂驱油封存地表泄漏大气扩散研究[J]. 油气藏评价与开发, 2024 , 14(6) : 885 -891 . DOI: 10.13809/j.cnki.cn32-1825/te.2024.06.009

Abstract

CO₂ enhanced oil recovery（EOR） with carbon capture and storage（CCS） projects offer dual benefits of increasing oil recovery and CO₂ storage, making it one of the most economically viable carbon sequestration methods nowadays. However, EOR-CCS projects typically involve multiple well sites, and the high risk of CO₂ leakage from wellbores poses significant safety and environmental challenges over large areas. To address the limitations of previous atmospheric diffusion studies based on point-source leakage at well sites, a new method for studying surface CO₂ leakage and atmospheric diffusion in EOR-CCS projects based on area-source flux monitoring at well sites was developed. A case study of an oilfield in East China, based on scenario analysis, demonstrated that CO₂ leakage flux monitoring using the eddy covariance method could provide accurate data on area-source leakage fluxes for entire well sites, enabling large-scale computational fluid dynamics（CFD） simulations. Multi-well-site CFD diffusion simulations effectively captured the impact of complex regional topography and multiple well sites on CO₂ leakage, supporting regional safety and environmental risk management for well site leakage.

Key words： CO₂ EOR-CCS; CO₂ leakage; eddy covariance; numerical simulation; atmospheric diffusion

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