利用灰色综合评估法优选聚驱阶段压裂井层

摘要

以大庆油田A区块为例,从采出井生产参数、层段地质参数及压裂时机出发,利用灰色综合评估法综合考虑9种因素,采用层次分析法确定各因素的权重,建立了一套完善的聚驱阶段压裂井层优选方法.应用该方法对A区块进行压裂井层的优选,并将优选井层进行现场压裂.实际压裂效果较好,其中2口井仍处于压裂有效期,证明了该方法的准确性,可为现场压裂井层的选取提供理论基础.%In this paper,taking A Block of Daqing Oilfield as an example,based on producing parameters,geologic parameters and human factors,using grey comprehensive evaluation method to consider nine elements and analytical hierarchy process to confirm the weight,a consummate method of optimization of fracturing wells and layers is established in polymer flooding stage.The wells were optimized and layers were fractured by this method in A Block in place.The result shows that the fracturing effect is preferable and two wells are still in term of fracturing validity.It supports the accuracy of method,which supplies theory basis on optimizing fracturing wells and layers.