灰色关联方法确定井组配注量

在注水时机、注水方式一定的情况下,注水强度尤其是各注水井的注水量配置显得非常重要。在对目前国内存在的配注方法的综合分析和研究之后,提出了以水驱油田注水井井组为研究单元,采用灰色关联分析方法中的关联度经归一化处理得到的关联系数作为井组内油井的动态劈分系数,从而对油井产液量劈分,进一步确定井组内注水井的配注量。经实例试算,说明本方法可以作为一种常规配注方法,该方法摒弃传统方法对注采井层段大量数据统计的烦琐性,方法简单,实用性强。

Calculation of injection allocation rates of well - groups with grey correlation method

Injection intensity, especially injection allocation rate of each well group, is critical given the timing and mode of water injection. Rational single well injection allocation rate can effectively relieve the areal, interlayer and in -layer contradictions, maintain the formation pressure, enlarge the swept volume, effectively control the increasing of water cut, and improve the development effects and oilrecovery factor of waterflooding oilfield. Based on a comprehensive analysis and study of the current available injection allocation methods in China, it is proposed to take the injector-group as the study unit and use the correlation coefficient from normalization of the degree of association in grey correlation analysis as the dynamic proration coefficient of the producer in the well group, so as to calculate the injection allocation rate of the injector in the well group based on proration of the liquid producing capacity of the producers. A case trial calculation shows that it is simple and practical and can be used as a routine injection allocation method.