试井是目前能够准确获取煤层参数的有效方法之一。本文综述了煤层气生产特点,从实际应用的角度重点介绍了煤层气井常用试井方法,并对各种试井测试方法的优缺点,适用范围进行了研究评价。结合煤层渗透率及储层压力的特征,探讨了试井测试方法在煤层气勘探开发中的应用。 Well testing is one of the effective methods to get the coal seam parameters accurately. In this paper, the characteristics of CBM production are summarized. The common well test methods for CBM wells are introduced from the practical application point of view. The advantages and disadvantages of all kinds of well test methods and their applicable scopes are also evaluated. Based on the characteristics of coalbed permeability and reservoir pressure, the application of well testing method in CBM exploration and exploration is discussed.