油井单井控制储量确定新方法研究

A NEW METHOD DETERMING OIL WELL CONTROL RESERVES

油井单井控制储量的确定往往通过试井资料分析或数值模拟分析获得,但试井资料和数值模拟方法都有一定的局限性,准确性受到影响,且难以随时进行动态储量分析,基本上没有利用单井的相对渗透率和单井采油指数的变化来确定单井控制储量。在分析采油指数变化与相对渗透率关系基础上,提出一种新的确定油井单井控制储量的方法,得出采油指数递减率与油相相对渗透率下降速率相同的关系,结合油井生产动态数据,建立相应的模型,计算出油井的单井控制储量。该方法特别适用于油田开发中后期,同时对剩余可采储量作出准确的预测,为单井挖潜措施提供可靠依据,指导油田开发方案的调整。

The oil well control reserves determination often is obtained through the well test analysis or the numerical simulation analysis, but the well test analysis and the numerical simulation analysis have their disadvantages, it is difficult to analyze the single well control reserves on time, basically, the relative permeability and the recovery index change of single well have not been used to determine single well control reserves. This article, in the analyzing recovery index change and the relative permeability relation, proposes a new method to determine the single well control reserves, the relationship of the decline rate between the recovery index and the relative permeability is obtained, single well control reserves is calculated, this method is suitable specially for the oil-field development mid-late period, and the accurate forecast to the surplus recoverable reserves, taps latent potentialities the measure for the single well to provide the reliable basis.