辽宁石油化工大学学报2025，Vol.45Issue(5)：54-63,10.DOI:10.12422/j.issn.1672-6952.2025.05.007
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
Research on the Influence of Injection and Production Parameters for Synergistic Oil Recovery Through Imbibition and Displacement in Mixed Wetting Tight Reservoirs
摘要
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.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Key words
Tight oil reservoir/Mixed wetting/Imbibition/Fracture-porous media/Injection parameter/Pore scale flow分类
能源科技引用本文复制引用
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):54-63,10.基金项目
国家自然科学基金面上项目(52274037) （52274037）
国家资助博士后研究人员计划项目(GZB20240137) （GZB20240137）
黑龙江省青年科技人才托举工程资助项目(2024QNTJ002) （2024QNTJ002）
大庆市指导性科技计划项目(zd-2024-18). （zd-2024-18）
