Abstract: This paper presents a mathematical model for multiphase well test with changing well-bore storage in a closed reservoir by using pseudo pressure and pseudotime function,Newtype curves for pressure drawdown or buildup are given,a method of welI test analysis is pro-vided also.Illustrated by a field example in this paper shows that this method is efficient.

Key words: well test, mathematical model, fitting, type curve, multiphase, flow

摘要： 应用拟压力和拟时间函数,提出了有界油藏具有变井储特征的多相流试井的数学模型,研制了压力降落与压力恢复的新的典型曲线.给出了试井分析方法;结合实例说明这种方法的有效性.

关键词: 试井, 数学模型, 拟合, 典型曲线, 多相流动