射孔参数对注水井流动效率的影响

为了研究射孔参数对注水井流动效率的影响，从单因素分析和多因素综合分析两方面研究各因素对注水井流动效率的影响规律。单因素分析表明，当射孔孔眼未穿透污染带时，注水井流动效率影响因素的相对重要度顺序为：孔眼深度、孔眼密度、压实损害程度、孔眼直径、相位角、地层非均质性、压实厚度；射孔孔眼穿透污染带时，相对重要度顺序为：孔眼密度、孔眼深度、压实损害程度、地层非均质性、压实厚度、相位角、孔眼直径。多因素正交分析给出了孔眼未穿透污染带、孔眼穿透污染带及有射孔压实、无钻井污染的理想射孔完井3种情况下的流动效率与各影响因素的定量关系式，可应用于射孔完井方案优化设计。图5表3参13

Impact of perforation parameters on the flow efficiency of water injection wells

The authors analyzed factors of influencing the flow efficiency during the process of perforation completion in water injection wells.The relational expressions of flow efficiency with factors under the following three conditions are given: the hole depth doesn't perforate the polluted area,the hole depth perforates the polluted area,and the ideal perforated hole with perforation compaction and without drilling pollution.The efficiency influencing factors in order of importance are: hole depth,hole density,compaction damage degree,hole diameter,phase angle,formation heterogeneity and compaction thickness when perforation doesn't penetrate polluted zone.When perforation penetrates polluted zone,the order is hole density,hole length,compaction damage degree,formation heterogeneity,compaction thickness,phase angle and hole diameter.