石油化工高等学校学报 ›› 2026, Vol. 39 ›› Issue (4): 62-73.DOI: 10.12422/j.issn.1006-396X.2026.04.007

• 石油工程 • 上一篇    下一篇

考虑焖井渗驱结合的低渗储层压驱产能预测

吴奇1(), 全洪慧2, 尹成峰3, 刘义坤1,4()   

  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.中海石油(中国)有限公司天津分公司,天津 300452
    3.中国石油大庆油田有限责任公司,黑龙江 大庆 163511
    4.东北石油大学 三亚海洋油气研究院,海南 三亚 572025
  • 收稿日期:2025-02-16 修回日期:2025-10-24 出版日期:2026-08-25 发布日期:2026-07-20
  • 通讯作者: 刘义坤
  • 作者简介:吴奇(1998-),男,硕士,从事油气多尺度渗流机理及提高采收率等方面的研究;E-mail:1481076718@qq.com
  • 基金资助:
    国家自然科学基金项目(52074087)

Hydraulic Fracturing Assisted Oil Displacement Productivity Prediction for Low-Permeability Reservoirs Considering the Combination of Soaking Imbibition and Displacement

Qi WU1(), Honghui QUAN2, Chengfeng YIN3, Yikun LIU1,4()   

  1. 1.Laboratory of Enhanced Oil Recovery of Ministry of Education,Northeast Petroleum University,Daqing Heilongjiang 163318,China
    2.CNOOC China Limited,Tianjin Branch,Tianjin 300452,China
    3.PetroChina Daqing Oilfield Co. ,Ltd. ,Daqing Heilongjiang 163511,China
    4.Sanya Offshore Oil & Gas Research Institute,Northeast Petroleum University,Sanya Hainan 572025,China
  • Received:2025-02-16 Revised:2025-10-24 Published:2026-08-25 Online:2026-07-20
  • Contact: Yikun LIU

摘要:

通过“渗驱结合”的方式,探究了低渗储层反向压驱后焖井过程中渗吸和驱替共同作用对储层压力和流体流动产生的影响,建立了考虑层间非均质的反向压驱产能预测半解析解数学模型;分析了焖井前后流场变化,并探究了渗透率级差、注液量、注液速率和焖井时间等参数对焖井后各层压力波及范围、饱和度波及范围和累计产油量的影响。结果表明,压驱后焖井可以强化压驱增能效果,进一步扩大上述波及范围,从而动用更多的地质储量。为实现压驱高效开发,当渗透率级差大于25时,建议优先采用分层开采工艺,同时将焖井时间控制在10~15 d,并适当降低注液速率,增大注液量。

关键词: 低渗储层, 反向压驱, 渗吸和驱替, 模型, 产能预测

Abstract:

Through the combination of imbibition and displacement,the impact of the combined action of imbibition and displacement on reservoir pressure and fluid flow during the soaking process after reverse hydraulic fracturing assisted oil displacement in low-permeability reservoirs was explored.A semi-analytical mathematical model for productivity prediction of reverse hydraulic fracturing assisted oil displacement is established,considering interlayer heterogeneity.An analysis was conducted on the changes in the flow field before and after soaking.Parametric studies are conducted to reveal the effects of permeability ratio, total injection volume,injection rate and soaking time on the pressure swept range,saturation swept range and cumulative oil production of each layer after soaking.The research results indicate that soaking well after hydraulic fracturing assisted oil displacement can enhance the energy enhancement effect of reverse hydraulic fracturing assisted oil displacement,further expand the affected area,and thus utilize more geological reserves.To achieve efficient development through hydraulic fracturing assisted oil displacement,it is recommended to consider layered mining when the permeability ratio is greater than 25.Meanwhile,the soaking time should be controlled within 10~15 days,with a properly reduced injection rate and increased total injection volume.

Key words: Low-permeability reservoirs, Reverse hydraulic fracturing assisted oil displacement, Imbibition and displacement, Model, Productivity prediction

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引用本文

吴奇, 全洪慧, 尹成峰, 刘义坤. 考虑焖井渗驱结合的低渗储层压驱产能预测[J]. 石油化工高等学校学报, 2026, 39(4): 62-73.

Qi WU, Honghui QUAN, Chengfeng YIN, Yikun LIU. Hydraulic Fracturing Assisted Oil Displacement Productivity Prediction for Low-Permeability Reservoirs Considering the Combination of Soaking Imbibition and Displacement[J]. Journal of Petrochemical Universities, 2026, 39(4): 62-73.

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