Abstract: Through theoretical analysis and numerical sianulatian,the behavior of the fluid flaw in a multilayer reservoir with crassflaw was studied when the reservoir was separated into two sections by a,packer and a drawdown as buildup test was run in one section.It is found that hoth the semilog plot for dra,wdawn and the Rarner plot far buildup have two straight lines,which can determine the praductivities of the testing section anal the whole reservoir.for a reservoir with two layers,skin factors can also be determined.The wellbare pressure difference will become steady in the second straight line periad,which can be used to determine the vertical permeability of the shale between the two sections.It is explained that different wellbare pressures anti diffusivities for different layers are two reasons to cause erassflaw.The properties of the crassflow are discussed and the its calculation method is given.

摘要： 本文通过理论分析和数值模拟,研究了具有层间越流的多层油藏被分隔为两个层段进行不稳定试井时的流动情况,指明压降曲线的半对数图和压力恢复曲线的赫诺图都具有两个直线段,据此可以决定测试层段及全油藏的产能系数,对于两层油藏尚能决定表皮系数.在第二直线段期两层段的井底压差将趋于稳定,该稳定值决定层段间低渗透夹层的垂向渗透率.另外还阐明了各层井底压力的不同和导压系数的不同是造成层间越流的两个原因,分析了这两种越流的性质,同时也给出了在第二直线期间计算这种越流的方法.