介绍了煤层气井下作业故障的原因,分析了沁水地区泵故障、煤层吐砂、抽油杆断脱三种井下作业故障的周期与影响因素,并探讨了对应的解决方法,旨在延长煤层气井作业周期.%The paper introduces the reasons for the default at the construction of the coal-bed gas well,analyzes the cycle for the default and influential factors from the pump default in Qinshui Area,sand from coal-bed,and disconnect of sucker rod,and explores the respective solutions,so as to prolong the construction period of the coal-bed gas well.
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