低渗透油藏极限注采井距的确定与附加压力损耗分析

由于流体在低渗透油藏中渗流存在启动压力梯度，使注采井距理论上存在一个最大值。利用考虑启动压力梯度影响的一源一汇稳定渗流理论，获得了不同注采压差和油层渗透率对极限注采井距以及注入水有效影响范围分析的表达式，可以计算出给定注采压差、渗透率条件下，低渗油藏的最大注采井距，并分析了注采压差、极限注采井距与附加压力损耗三者之间的关系，从而为合理注采井网的部署提供依据。

Analysis of Additional Pressure Loss and Determination of Abstract-Limited Well Distance in Low Leakage Oil Deposit

owing to the start up pressure gradient in the process of the flowing through porous media,so that there is a maximum space between injection-production well,in theory.A ccording to the theory of flowing through the porous media for the production-one source one-convegencepoint,get a expression at different injection pressure and permeability of the reservoir which influence the injection-production well spacing and i effective impact of injection water,largest injection-production well space can be calcula...