窜流通道分级模糊评判方法及其在绥中36-1油田的应用

A fuzzy-diagnosis method to grade channeling paths and its application in SZ 36-1 oilfield

针对已有模糊评判方法存在的不足,提出了一种窜流通道分级模糊评判方法。根据窜流程度将窜流通道分为3种级别,综合考虑窜流通道的影响因素和表现特征构建简便、合理的评判指标体系,确定各指标的分级界限并分配权重,从而建立起对水驱或聚合物驱油藏均适用的窜流通道模糊评判模型。绥中36-1油田注聚试验井组实例应用表明,该方法简便、实用,且具有较高的可靠性。

A fuzzy-diagnosis method to grade channeling paths is developed due to the shortcomings from the existed methods of fuzzy-diagnosis.Channeling paths can be divided into three grades according to their channeling degree,and a simple and reasonable system of diagnosis indicators can be established by comprehensively considering influence factor and performance characteristic of channeling path.Furthermore,the gradation limits and distributed weights are determined for each diagnosis indicator,then resulting in construction of a fuzzy-diagnosis model for channeling path that is applicable to water-drive or polymer flooding reservoirs.Its application in a pilot well cluster with polymer flooding in SZ 36-1 oilfield has shown that this method is simple,practical and higher in reliability.