作为岩性气藏的子洲气田山2气藏，其气水分布受构造、储层砂体变化的控制，在测井识别储层流体中要综合考虑各类因素。应用电阻率一孔隙度交会图法、视孔隙度法和地层水孔隙度法对子洲气田山2段气层、水层、干层进行识别，认为上述方法共同应用可有效识别储层流体。电阻率一孔隙度交会图法、地层水孔隙度法可以有效区分气层与水层：视孔隙度法可以将干层与气层、水层区分开。结果表明，上述3种方法共同应用于本区进行气水层测井识别，其符合率达95％，具有较高的准确率。

Zizhou Gas Field is a lithologic gas reservoir,of which the gas and water distribution is dominated by structure and the alteration of sand body condition．SO all sorts of factors should be considered comprehensively in log recognition of reservoir fluid．The crossplot of resistivity·porosity，apparent porosity and formation water porosity are applied to identify the gas layers，water layers and dry layers of the second member of Shanxi Formation in Zizhou Gas Field．The resuh shows that these methods can effectively distinguish reservoir fluid．The crossplot of resistivity-porosity and form ation water porosity call be used to distinguish gas layers from water layers，and apparent porosity call be applied to distinguish dry layers from gas layers and water layers clearly．The accuracy of these three methods used together in the study area can reach 95％．