YL油田是一个双重孔隙介质、底水驱动的灰岩油藏。原始地层压力为308大气压,饱和压力为14大气压,而在开发初期表现出了活跃的天然底水驱动作用。本文基于YL油田产能递减阶段的实际开发数据,提供了一些开发动态的分析方法。这些方法可以用于预测同类油田的开发动态,也可用于估算在废弃条件下的最终采收率。YL油田的最终采收率不高,而将不会超过原始地质储量的25％。 The YL field is a dual-porosity, bottom-driven limestone reservoir. The original formation pressure was 308 atm and the saturation pressure was 14 atm, and active natural bottom-water drive was demonstrated early in development. Based on the actual development data of YL oilfields during the decreasing phase of production capacity, this paper provides some dynamic analysis methods. These methods can be used to predict the development of similar fields and can also be used to estimate the ultimate recovery under waste conditions. The ultimate recovery of the YL field is not high, and will not exceed 25% of the original geological reserve.