本文对双重介质地层、考虑油井打开的不完善、井底污染程度及井筒续流等因素后,提出了不稳定试井中参数解释的一种新方法,即运用数值解与最优控制理论,对关井压力恢复曲线进行自动拟合和迭代的方法来反求地层参数及油藏中渗透率分布。并对其分布的唯一性进行了应用上的探讨。通过模拟和迭代,曲线拟合的结果是令人满意的,由此可较准确而有效地进行试井资料的解释。从而开拓了不稳定试井参数解释方法的新领域。 In this paper, a new method of parameter interpretation in unstable well testing is proposed for double media strata, considering imperfect opening of oil well, degree of bottomhole contamination and wellbore freewheeling. By using numerical solution and optimal control theory, Off-well pressure recovery curves are automatically fitted and iterated to reverse formation parameters and permeability distribution in the reservoir. And the uniqueness of its distribution has been applied to explore. Through the simulation and iteration, the result of curve fitting is satisfactory, which can be more accurate and effective interpretation of well test data. Thus opening up a new field of interpretation of unstable well testing parameters.