关键词: 油田开发, 产量递减率, 储量动用率, 储采平衡系数, 原油采收率, 储采比, 计算方法

Abstract:

Based on the definition of reserves-production ratio (R/P), the production characteristics in the rising, stable and decline stages of oil production during oilfield development were analyzed. The new calculation methods of R/P in the three stages were present, and some relationship equations were built up among the reserves-production ratio, the production rising rate, reserves displacement rate, reserves-production balance factor and developed reserves factor. The study result shows that R/P changes irregularly in the whole process of oilfield development, but there is a stable value of oil production in every stage of the three development stages. The oil production rate and R/P value should be unchangeable in order to realize the stable oil production. An relationship equation among oil recovery factor, reserves replacement ratio and developed reserves factor was developed on the basis of definitions of R/P and oil recovery factor. The new methods can be used to match the index of oilfield development and analyze the reasonability of three ratios in oilfield development.

Key words: oilfield development, production decline ratio, developed reserves factor, reserves-production balance factor, oil recovery rate, reserves-production ratio, calculation method