应用分隔系统模型描述断块气藏的压力特征

Description of Pressure Behavior of Gas Reservoirs in Fault Blocks Using Compartmentalised System Models.

断块气藏的压力导数曲线在径向流动段之后出现两条斜率为 1.0的直线 ,第一条直线常常被误解释为井筒储集 ,第二直线段被误解释为拟稳态 ,得到不合理的解释结果。本文采用分隔系统模型进行评价 ,指出第一直线段反映测试井所在单元的拟稳态 ,第二直线段表征总系统的拟稳态。矿场实例表明 。

The derivative curves of gas reservoirs in fault blocks exhibit two straight lines with the unit slope after the radial flow regime the first line to often misiterpreted as wellbore storage,and the second is misiterpreted as pseudo state.The study evaluated the data using compartmentalised system models,and shows that the first line reflects the pseudo steady atate of the well cell,and the second represents the pseudo steady state of the fetal system.Two field cases are presented to demonstrate the validity.