辽宁石油化工大学学报 ›› 2025, Vol. 45 ›› Issue (5): 54-63.DOI: 10.12422/j.issn.1672-6952.2025.05.007

• 石油与天然气工程 • 上一篇    下一篇

裂缝性混合润湿致密油藏渗吸驱替协同注入参数影响研究

濮御1,2,3(), 杨二龙1(), 付世博2,3, 杜庆龙4, 王迪2,3   

  1. 1.东北石油大学 提高油气采收率教育部重点实验室,黑龙江 大庆 163318
    2.东北石油大学 土木建筑工程学院,黑龙江 大庆 163318
    3.东北石油大学 黑龙江省寒区新能源热利用及防灾减灾重点实验室,黑龙江 大庆163318
    4.中国石油大庆油田有限责任公司 勘探开发研究院,黑龙江 大庆163712
  • 收稿日期:2025-04-07 修回日期:2025-06-18 出版日期:2025-10-25 发布日期:2025-10-20
  • 通讯作者: 杨二龙
  • 作者简介:濮御(1989⁃),女,博士研究生,讲师,从事非常规油气藏渗流机理和多孔介质内传热传质研究;E⁃mail:puyunepu@163.com
  • 基金资助:
    国家自然科学基金面上项目(52274037);国家资助博士后研究人员计划项目(GZB20240137);黑龙江省青年科技人才托举工程资助项目(2024QNTJ002);大庆市指导性科技计划项目(zd?2024?18)

Research on the Influence of Injection and Production Parameters for Synergistic Oil Recovery Through Imbibition and Displacement in Mixed Wetting Tight Reservoirs

Yu PU1,2,3(), Erlong YANG1(), Shibo FU2,3, Qinglong DU4, Di WANG2,3   

  1. 1.Key Laboratory of Improving Oil and Gas Recovery,Ministry of Education,Northeast Petroleum University,Daqing Heilongjinag 163318,China
    2.School of Civil and Architecture Engineering,Northeast Petroleum University,Daqing Heilongjinag 163318,China
    3.Heilongjiang Provincial Key Laboratory of Thermal Utilization and Disaster Reduction of New Energy in Cold Regions,Northeast Petroleum University,Daqing Heilongjinag 163318,China
    4.Exploration and Development Research Institute of PetroChina Daqing Oilfield Co. ,Ltd. ,Daqing Heilongjinag 163712,China
  • Received:2025-04-07 Revised:2025-06-18 Published:2025-10-25 Online:2025-10-20
  • Contact: Erlong YANG

摘要:

基于Navier?Stokes方程与相场理论耦合方法,构建了含裂缝混合润湿致密油藏孔隙尺度数值模型,研究了不同注入速度、注入方式及注停时间下的渗吸采油过程。结果表明,注入速度与采出程度呈非线性关系,0.01 m/s为最佳注入速度,此时毛细管力与黏滞力动态平衡,裂缝?基质压力传递效率最优,采出程度达峰值;周期性间歇注水方式较恒速注水可节水48%,而采出程度仅降低1.08%,在低油价下经济性更优;较短的注停时间配合高频次注水,可形成周期性压力波动,累计注水量减少80%,可实现与长周期注水相同的采油效果。研究混合润湿致密油藏注水开采过程中注入参数对渗吸?驱替协同增效机制的影响规律,为优化注入方式提供了理论依据。

关键词: 致密油藏, 混合润湿, 渗吸, 裂缝?孔隙介质, 注入参数, 微观渗流

Abstract:

Based on the coupling method of the Navier?Stokes equation and phase field theory, the pore scale numerical model for fractured mixed?wet tight reservoir is established to investigate the oil recovery process under different injection velocities, injection modes, and injection?shutdown durations. The findings indicate that the injection velocity has a nonlinear correlation with the oil recovery, with an optimal velocity of 0.01 m/s, where the dynamic equilibrium between capillary force and viscous force achieves the highest fracture?matrix pressure transfer efficiency, leading to a peak recovery degree. The periodic intermittent water injection demonstrates a 48% reduction in water usage compared to constant rate injection, with a slight 1.08% reduction in recovery, making it more economical under low oil prices. The short?cycle high?frequency water injection with low injection?shutdown durations can generate periodic pressure fluctuations, reducing cumulative water injection by 80%, while achieves comparable recovery performance to long?cycle injection.This study investigates the influence law of injection parameters on the synergistic enhancement mechanism of imbibitiondisplacement during water flooding in tight oil reservoirs with mixed wettability, providing a theoretical basis for optimizing injection strategies.

Key words: Tight oil reservoir, Mixed wetting, Imbibition, Fracture?porous media, Injection parameter, Pore scale flow

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引用本文

濮御, 杨二龙, 付世博, 杜庆龙, 王迪. 裂缝性混合润湿致密油藏渗吸驱替协同注入参数影响研究[J]. 辽宁石油化工大学学报, 2025, 45(5): 54-63.

Yu PU, Erlong YANG, Shibo FU, Qinglong DU, Di WANG. Research on the Influence of Injection and Production Parameters for Synergistic Oil Recovery Through Imbibition and Displacement in Mixed Wetting Tight Reservoirs[J]. Journal of Liaoning Petrochemical University, 2025, 45(5): 54-63.

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链接本文: https://journal.lnpu.edu.cn/CN/10.12422/j.issn.1672-6952.2025.05.007

               https://journal.lnpu.edu.cn/CN/Y2025/V45/I5/54