【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。更多还原

【Abstract】 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 wellbore 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.更多还原