气井井间流动的压降曲线

PRESSURE FALL OFF CURVES OF THE INTERWELL FLOW AMONG GAS WELLS

用气井有效半径描述了气井井底状况及湍流影响，建立了气井井间干扰问题的流动模型，用拉普拉斯变换法求出了储层内的压力分布，并得到了观测井、激动井的无量纲井底压降表达式。利用公式绘出有实用价值的无量纲井底压降曲线，并推算了气藏动态参数，从而为气田开发提供了动态分析依据。

The paper describes gas well bottom hole conditions and tubulent influence factors by using the effective radii of gas wells,builds a flow model of the interwell interference problems among gas wells and calculates pressure distribution in the reservoir by using Laplace transformation methods.At the same time,obtains the dimensionless bottom hole pressure drop expression of observating well and exciting well and furthermore draws dimensionless bottom hole pressure fall off curve with a certain practical value,deduces and calculates dynamic parameters of the gas reservoir.Thus provides the dynamic analysis envidence for gas reservoir development.