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介绍了四川中坝气田须二气藏边水的水侵特点以及活动规律，认为该气藏水侵主要沿裂缝方向侵入气藏，边水能量小，属弹性能量有限的封闭水体，对气藏生产有一定影响；对排水效果进行了分析，认为气藏采取排水降压释放封闭气，增产潜力很大，目前水侵已得到有效的控制。排水采气成功的主要经验是：①正确选定排水方式；②正确确定排水规模；③正确选择排水井点；④正确选择、完善排水工艺

32 Development Effictiveness Analysis of Zhongba Xu 2 Gas Reservoir

The water water invasion in Zhongba Xu 2 gas reservoir is mainly along the fracture direction,the energy of edge water is small,belongs to enclosed water body with limited elastic energy ,and has somedisabvantahes on reservoir production.By analysing the water draiming effectively control the water in-to release the closed gas through drainage and depressurization in order to effectively control the water in-vasion,and the potetial to increase productionis great.Toeffectively control the water fof-lowing things must be done:(1)select theright way of draining water;(2)detrmine the right drainage scope;(3)select the right wells for drainahe;(4)selest the proper drainage process.