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通过对我国煤储层参数获取方法的分析,选取注入/压降测试方法作为研究重点,对试井参数选取、测试过程等进行介绍,通过注入/压降和原地应力测试,以四川省某煤层气参数井为例,获取该井的储层压力、渗透率、表皮系数、破裂压力、闭合压力等参数,并对煤储层特征进行评价,为该区煤层气生产潜能评价和开发试验提供可靠参数依据。
Through the analysis of coal reservoir parameter acquisition method in our country, the injection / pressure drop test method is selected as the research focus, the selection of well test parameters and the testing process are introduced. Through the injection / pressure drop and in situ stress test, CBM parameter well is taken as an example to get parameters such as reservoir pressure, permeability, skin factor, fracture pressure and closure pressure of the well, and the coal reservoir characteristics are evaluated to provide CBM production potential evaluation and development test in the area Reliable parameters based.