【摘要】 为查明储层内部的低渗透夹层对层内非均质性,采出程度的影响,利用A油田相关资料建立数值模型,采用数值模拟方法,应用正交试验对夹层厚度、夹层渗透性、夹层在井网中的位置、延展长度、夹层上下储层的层间渗透率非均质性、采油速度6个因素进行研究。通过对正交试验结果的统计分析表明,夹层厚度、夹层渗透性、夹层在井网中的位置、延展长度、采油速度5个因素对采出程度影响不显著,夹层上下储层的层间渗透率非均质性是夹层影响注水效果的主要因素。更多还原

【Abstract】 To investigate the influence of low permeability interbed within the reservoirs on heterogeneity and recovery percent, a numerical model was established by numerical simulation based on data from Oilfield A. An orthogonal test was made on 6 factors, such as interbed thickness, its permeability, its position within well pattern, extension length, interlayer permeability heterogeneity above and below the interbed and oil production velocity. Statistical analysis of the result shows that interbed thickness, its permeability, its position within the well pattern, extension length and oil production velocity have less influence on recovery percent, the main influential factor is the heterogeneity of interlayer permeability above and below the interbed.更多还原