中国石油大学学报（自然科学版）2025，Vol.49Issue(6)：85-96,12.DOI:10.3969/j.issn.1673-5005.2025.06.008
CO2驱油窜流控制技术进展与未来方向
Progress and future directions in channeling control technologies for CO2 flooding
摘要
Abstract
CO2 flooding is an important carbon utilization method in carbon capture,utilization,and storage(CCUS)technolo-gy combinations.It can significantly enhance oil recovery and make large-scale CO2 storage possible.However,the reservoirs are generally heterogeneous,and the CO2 has the characteristics of low viscosity and density.Under the action of flow resist-ance difference and gravity differentiation,the injected CO2 is easily able to flow along the dominating channel to the production well,reducing the oil displacement efficiency and CO2 storage volume.It is a significant way to increase the effectiveness of CO2 displacement and the potential for underground storage by improving reservoir heterogeneity,alleviating the contradiction between gas phase and liquid phase,preventing CO2 channeling,and realizing the expansion of swept volume.At present,the methods that have been applied to control CO2 channeling include water-CO2 alternating injection and chemical plugging agent.Meanwile,there are several potential technologies that remain in the laboratory research stage.This paper analyzes the research progress in mainstream CO2 channeling control methods.The core technical challenges identified include the need for enhanced efficiency in water-alternating-gas injection for channeling control,as well as issues related to the insufficient stability and short effective duration of chemical plugging agents.Based on this analysis,the potential development direction of CO2 channeling control technology in the future is preliminarily discussed,including the development of high-performance plugging agents,the optimization of combined channeling control processes,and exploration of new technical approaches.关键词
CO2驱油/窜流判别/气体窜流控制/扩大波及效率/提高采收率Key words
CO2 flooding/channeling identification/gas channeling control/improve sweep efficiency/enhance oil recovery分类
能源科技引用本文复制引用
戴彩丽,邹辰炜,刘逸飞,杨宁,吴一宁,赵光,袁彬,黄永平..CO2驱油窜流控制技术进展与未来方向[J].中国石油大学学报（自然科学版）,2025,49(6):85-96,12.基金项目
国家科技重大专项(2024ZD1406602) （2024ZD1406602）
中国石油大学(华东)深层油气全国重点实验室自主研究课题(SKLDOG2024-ZYTS-08) （华东）
