针对目前采用现金流量法计算经济可采储量时的计算工作量大、不确定因素多等缺点 ,提出应用经济界限值计算经济可采储量 ,具体包括关井产量界限法、关井含水极限法和井网密度法 ,将油藏工程和经济分析相结合 ,计算方法科学 ,操作简便 ,并在实践中得到了具体应用 ,取得了良好的效果 Aiming at the shortcomings of the current calculation of economically recoverable reserves by cash flow method, such as the heavy workload and uncertainties, this paper proposes that economic recoverable reserves should be calculated according to the economic thresholds, Well pattern density method, the reservoir engineering and economic analysis, the calculation method is scientific, easy to operate, and in practice has been the specific application, and achieved good results