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.
出处
《石油矿场机械》
2007年第6期76-79,共4页
Oil Field Equipment
关键词
应力集中
渗透率
油井产量
stress concentration
permeability
well production
