西安石油大学学报（自然科学版）2024，Vol.39Issue(1)：40-47,8.DOI:10.3969/j.issn.1673-064X.2024.01.005
考虑应力敏感的致密储层油水两相相对流动能力分形数值模拟方法
A Numerical Simulation Method for Oil-Water Two-Phase Relative Flow Capacity in Tight Reservoirs Considering Stress Sensitivity Effect
摘要
Abstract
A oil-water relative permeability model for tight reservoirs considering stress sensitivity was established on the basis of fractal theory and capillary bundle model.The effects of effective stress,elastic modulus and porosity on the oil-water relative permeability curve of tight reservoirs were studied by defining the normalized oil-water relative permeability.The high agreement degree between the predicted results of the model and the experimental data validates the effectiveness of the model.The theoretical analysis results indicate that effective stress is negatively correlated with irreducible water saturation and remaining oil saturation.As the effective stress increa-ses,the relative permeability of oil and water shrinks towards the middle,and the co-seepage area of oil and water decreases.As the e-lastic modulus decreases,the deformation,irreducible water saturation and residual oil saturation of the porous medium all increase.The influence of porosity on the relative permeability of oil and water is relatively small.The established model can accurately describe the two-phase seepage characteristics of oil and water in tight reservoirs with stress.关键词
分形理论/相对渗透率模型/应力敏感/致密储层Key words
fractal theory/relative permeability model/stress sensitivity/tight reservoir分类
能源科技引用本文复制引用
王嘉新,田冷,蒋丽丽,魏金阳,刘宗科,王泽川..考虑应力敏感的致密储层油水两相相对流动能力分形数值模拟方法[J].西安石油大学学报（自然科学版）,2024,39(1):40-47,8.基金项目
国家自然科学基金"基于超声波作用促进低渗透油藏CO2驱动态混相机理研究"(51974329) （51974329）
国家科技重大专项"致密气富集规律与勘探开发关键技术"(2016ZX05047-005-001)联合资助 （2016ZX05047-005-001）
