油田储量替代率与稳产的关系

Relationship of reserve replacement ratio and stabilized production in oilfields.

储量替代率是衡量油田相对稳产的重要指标,但目前对这一概念的理解以及其与稳产的关系认识不尽统一甚至错误。从年度增加可采储量的构成入手,定义了广义储量替代率和动用储量替代率的概念;分析了中国2大石油公司广义储量替代率和动用储量替代率的变化趋势和现状;研究了利用年度增加动用可采储量进行年度配产的基本思路和方法;推导出了动用储量替代率稳产临界值的计算公式;明确了动用储量替代率稳产临界值由采收率、递减率、动用地质储量采油速度和达产率4种因素综合决定。将研究成果应用到了油田实际,确定了中国石化及重点油田和油区的动用储量替代率稳产临界值,对相应的产量趋势做出了符合油田实际的基本判断。

Reserve replacement ratio is an index for measuring relatively stable production in oilfields.However,the understanding of this conception and the relationship with the stabilized production are not completely unified even mistaken.Based on the different components of the annual increase in recoverable reserves,new definition of the generalized reserve replacement ratio and proven reserve replacement ratio were given.Variation trend and present situation of these two respects of China's two major oil companies were analyzed.Basic ideas and methods of the annual increase in proven recoverable reserves for increasing the annual allocation were researched.Reserve replacement ratio formula to calculate of the critical stable value was derived.Recovery efficiency,de- cline rate,recovery rate of proven OOIP and the yield rate deter- mine the critical stable value of the proven reserve replacement ratio comprehensively.The research results were applied to the actual oilfield.The critical stable value of that in China's Petro- chemical Corporation and some major oilfields or petroliferous districts was determined.The output trends corresponding with the actual basic judgment was given.