多层砂岩油藏注水开发后期,在油水井之间形成了储层高渗透通道,导致注入水沿高渗透通道做无效循环,油井产量下降.为改善注入水驱油效果,必须对无效注采井层实施调剖、堵水等措施,而有效识别无效注采井层是解决问题的关键.优选出了识别无效注采油水井和无效注采层位的判定指标,并建立了用于识别无效注采油水井和无效注采层位的模糊综合评判数学模型. In the late stage of waterflooding of multi-layer sandstone reservoirs, high-permeability reservoirs are formed between oil and water wells, resulting in ineffective circulation of injected water along high-permeable channels and decreased production of oil wells.In order to improve the effect of injected water flooding, Well control and plugging, and other effective measures to identify invalid injection and production well are the key points to solve the problem.It is determined that the identification index of invalid injection well and invalid injection-production well are established, A Fuzzy Comprehensive Evaluation Mathematical Model of Injection Production Well and Inactive Injection and Production Layers.