煤层气井注入/压降测试技术及应用

Injection/Pressure Drop Testing Technology to Coalbed Methane( CBM) Well and Its Application

注入/压降测试是获得煤层参数的主要方法,基于注入/压降试井的理论及经验,经过大量实测数据的研究和现场实地测试,对注入压力高于破裂压力的注入/压降资料进行现场应用,总结出一套成熟的煤层气井注入/压降测试的试井设计、测试工艺、参数解释及应力分析方法,提出注入压力高于破裂压力的注入/压降测试同样适用于煤层的渗透率、地层压力等参数的分析与解释的观点。

Injection / pressure drop test is the main method to acquire parameters of coal bed. Based on its theory and experience,through the research of a large number of measured data and field test,data of which the injection pressure is higher than fracture pressure is used to sum up a set of mature pressure drop test method of coal-bed methane( CBM) well,which is about well test design,test construction process,parameter interpretation and stress analysis,to propose a viewpoint of that it also can apply to analyze coal seam permeability,formation pressure and other parameters.