中文摘要：

为了对煤层气井试井方法有更加全面的认识,采用注入压降法试井对裸眼井和套管射孔后煤层气储层参数进行试验测试,测得试验井不同阶段的煤层气储层参数结果;研究了试验井的不同阶段的试井试验条件,采用不同阶段试验测试得出结果进行全方面系统对比,结果表明：对复杂井况的裸眼井,采用套管射孔后测试可以有效获取煤层参数并且确保了测试井的安全;延长注入压降试井的测试时间,可以更准确的获取煤层参数;对于套管射孔试验井,增加射孔密度和射孔距离可以有效的沟通煤层与井筒的连通性,而且采用跨隔双封隔器试井测试可以降低井筒储集效应,减小井筒畸变时间。

英文摘要：

In order to have a full understanding on a well test method of a coal bed methane well,a well test with an injection pressure drop method was applied to an experiment and test on coal bed methane reservoir parameters of an open well and post perforated casing and the results on the coal bed methane reservoir parameter of the test well at different stage were measured. The paper had a study on the experiment conditions of the test well at different stage. A full directional systematic comparison was conducted with the results measured at different test stage. The results showed that with the post perforated casing,the test of the complicated condition open well could effectively obtain the seam parameters and could ensure the safety of the test well. With a test time extension of the injection pressure drop test well,more accurate seam parameters could be obtained. With a perforated hole density and perforated distance increased,the casing perforated test well could effectively link up the liking between the seam and mine shaft. With a double space packer,the well test could reduce an accumulated effect of the mine shaft and could reduce a distortion time of the mine shaft.