碳酸水驱油与CO2埋存规律数值模拟研究

doi:10.3969/j.issn.1006-6535.2026.01.010

特种油气藏 ›› 2026, Vol. 33 ›› Issue (1): 84-93.DOI: 10.3969/j.issn.1006-6535.2026.01.010

碳酸水驱油与CO₂埋存规律数值模拟研究

李绍鹏^1,2, 宿丽娜³, 韩瑞⁴, 党法强^1,2, 马芮^1,2, 徐新萍^1,2, 李松岩^1,2

1.中国石油大学(华东),山东青岛 266580;
2.中国石油大学(华东)深层油气全国重点实验室,山东青岛 266580;
3.中国石油渤海钻探工程有限公司,天津 300280;
4.中海油田服务股份有限公司,天津 300456

收稿日期:2025-02-26 修回日期:2025-09-17 出版日期:2026-02-25 发布日期:2026-06-22
通讯作者: 李松岩(1980—),男,教授,2003年毕业于石油大学(华东)热能与动力工程专业,2009年毕业于中国石油大学(华东)油气田开发工程专业,获博士学位,现主要从事CO₂驱油与封存方面的研究工作。
作者简介:李绍鹏(1997—),男,2016年毕业于东北石油大学石油工程专业,现为中国石油大学(华东)石油与天然气工程专业在读博士研究生,主要从事CO₂提高采收率方面的研究。
基金资助:
国家自然科学基金“致密油藏纳米孔隙内超临界CO₂扩散传质机制研究”(51974346)

Numerical simulation of carbonated water flooding and CO₂ sequestration rule

LI Shaopeng^1,2, SU Lina³, HAN Rui⁴, DANG Faqiang^1,2, MA Rui^1,2, XU Xinping^1,2, LI Songyan^1,2

1. China University of Petroleum(East China), Qingdao, Shandong 266580, China;
2. State Key Laboratory of Deep Oil and Gas, China University of Petroleum(East China), Qingdao, Shandong 266580, China;
3. CNPC Bohai Drilling Engineering Company Limited, Tianjin 300280, China;
4. China Oilfield Services Limited, Tianjin 300456, China

Received:2025-02-26 Revised:2025-09-17 Online:2026-02-25 Published:2026-06-22

摘要/Abstract

摘要： 将CO₂溶解在水中形成碳酸水再注入地层驱油的方法,可以克服CO₂的高流度和重力分异等问题,能改善原油性质并提高采收率,但不同生产参数对碳酸水驱效果及CO₂埋存的影响尚不明确,因此,采用数值模拟方法,研究不同开发方式、CO₂物质的量浓度和渗透率对碳酸水驱开发效果及CO₂埋存的影响。结果表明:油藏衰竭开采后转水驱和水气交替驱的采出程度分别为45.3%和53.5%;衰竭后转CO₂驱时,采出程度提高至63.7%,由于气窜问题,CO₂埋存率仅为31.9%;相比之下,衰竭后转碳酸水驱的采出程度为58.2%,介于水驱与CO₂驱之间,并且CO₂埋存率达到44.0%;CO₂物质的量浓度对碳酸水驱的采收率有显著影响,高浓度CO₂可以改善油水流动性、加速CO₂扩散至油相,显著提高原油的流变性能,进而提高采收率;此外,研究发现碳酸水驱能够在不同渗透率的油藏中有效提高采收率,同时减少CO₂的气窜现象,增强CO₂的埋存效果。碳酸水驱作为一种提高原油采收率和实现CO₂埋存的有效技术,对未来的油气开发和碳埋存具有重要意义。

关键词: 碳酸水驱, 提高采收率, CO₂埋存, 数值模拟

Abstract: The method of dissolving CO₂ in water to form carbonated(CO₂-saturated)water and then injecting it into the reservoir can overcome CO₂ high mobility and gravitational segregation,improving crude oil properties and increasing recovery.However,the effects of different operational parameters on carbonated water flooding and CO₂ storage remain unclear.Therefore,numerical simulation was performed to study how different development schemes,CO₂ molar concentrations in carbonated water,and reservoir permeabilities affects carbonated water flooding performance and CO₂ sequestration.Results show that after reservoir depletion,switching to water flooding and alternating water-gas flooding yielded oil recoveries of 45.3% and 53.5% respectively.Switching to CO₂ flooding increases recovery to 63.7%,but CO₂ storage is only 31.9% due to gas channeling.In contrast,switching to carbonated water flooding achieved 58.2% recovery oil factor(between that of water and CO₂ floodings)with CO₂ storage of 44.0%.Higher CO₂ concentration in carbonated water significantly improved recovery:high CO₂ concentrations improved oil-water flow properties and accelerated CO₂ diffusion into the oil phase,markedly enhancing oil rheology and oil recovery.Furthermore,carbonated water flooding effectively increases recovery in reservoirs of different permeabilities,while reducing CO₂ channeling and enhancing CO₂ sequestration.Carbonated water flooding is therefore an effective technique for improving oil recovery and achieving CO₂ storage,with important implications for future oil-gas development and carbon sequestration.

Key words: carbonated water flooding, enhanced recovery, CO₂ sequestration, numerical simulation

中图分类号:

TE357

李绍鹏, 宿丽娜, 韩瑞, 党法强, 马芮, 徐新萍, 李松岩. 碳酸水驱油与CO₂埋存规律数值模拟研究[J]. 特种油气藏, 2026, 33(1): 84-93.

LI Shaopeng, SU Lina, HAN Rui, DANG Faqiang, MA Rui, XU Xinping, LI Songyan. Numerical simulation of carbonated water flooding and CO₂ sequestration rule[J]. Special Oil & Gas Reservoirs, 2026, 33(1): 84-93.

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碳酸水驱油与CO₂埋存规律数值模拟研究

Numerical simulation of carbonated water flooding and CO₂ sequestration rule

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