深圳大学学报（理工版）2026，Vol.43Issue(3)：253-261,9.DOI:10.3724/SP.J.1249.2026.03253
基于数值模拟的海上低渗油藏压驱选井选层标准
Numerical-simulation-based criteria for well and layer selection in fracturing-flooding of offshore low-permeability reservoirs
摘要
Abstract
To address the lack of clear criteria for well and layer selection in the offshore applications of fracturing-flooding technology,this study develops a refined numerical simulation method to quantitatively characterize the oil enhancement mechanisms associated with high-pressure fracture-induced permeability improvement,surfactant-assisted oil displacement,and soak-imbibition processes.Based on numerical simulations,selection criteria for wells and layers suitable for fracturing-flooding are systematically investigated,and the relative influence of key selection indicators on incremental oil production is analyzed.Results show that the oil-saturation condition play a more critical role than original reserves and physical properties of the reservoir in well and layer selection.Specifically,a pressure maintenance level greater than 0.4 and an oil saturation of exceeding 40%are identified as the lower limits for candidate wells and layers.After fracturing-flooding treatment of the optimized target wells and layers,the initial incremental oil production reaches 50 m3/d,and the productivity index of the target layer increases from 1.2 m3/(d·MPa)to 9.2 m3/(d·MPa),and the cumulative incremental oil production reaches 1.01×104 m3 within six months,indicating that the fracturing-flooding performance meets the design requirements.Field practice shows that the proposed refined numerical simulation approach—which incorporates formation energy replenishment,pore and permeability enhancement,pressure-induced fracturing,surfactant-assisted washing oil,and imbibition displacement mechanisms—together with the established well and layer selection criteria,provides effective technical support for fracturing-flooding operations in offshore low-permeability reservoirs.关键词
油田开发/低渗油藏/海上油藏/压驱工艺/数值模拟/选井选层Key words
oilfield development/low-permeability reservoir/offshore reservoir/fracturing-flooding technology/numeri-cal simulation/well and layer selection分类
能源科技引用本文复制引用
汤明光,魏峰,马帅,邓玄,张玉立,王飞,王金伟,乔润伟,邢天戈..基于数值模拟的海上低渗油藏压驱选井选层标准[J].深圳大学学报（理工版）,2026,43(3):253-261,9.基金项目
National Science and Technology Major Special Project of China(2025ZD1407405) 国家科技重大专项基金资助项目(2025ZD1407405) （2025ZD1407405）
