钻井后应力集中对油井产量的影响  

Effect of Stress Concentration after Drilling on Well Production

作　　者：于鸿椿[1] 

机构地区：[1]中国石油大学,山东东营257061

出　　处：《石油矿场机械》2007年第6期76-79,共4页Oil Field Equipment

摘　　要：钻井后因应力集中产生的压密效应,使地层渗透率降低,影响油井产量。将岩层视为均质的弹性体,用弹性力学方法分析了钻井后井周引起地层应力的重新分布,考虑了应力与渗透率的关系,将地层视为渗透率不均匀地层,对应力变化对油井产量的影响进行了分析。Formation permeability is decreased and well production is affected due to compaction effect caused by stress concentration after drilling. In this paper, with formation as a uniform elastic body, redistribution of formation stress around the well bore after drilling is analyzed, relationship between stress and permeability is considered, the formation is regarded as a formation with non-uniform permeability and effect of stress variation on well production is analyzed with the method of elastic mechanics.

关 键 词：应力集中 渗透率 油井产量 

分 类 号：TE3[石油与天然气工程—油气田开发工程]