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以南海北部珠江口盆地西部文昌A凹陷上渐新统珠海组低孔低渗油气层为研究对象,利用多种方法展开复杂地质条件下天然气层的综合识别方法的研究.同时,利用气测录井数据建立起了用于识别凝析气与挥发油的区域解释图版,在测井流体识别与评价中发挥了重要的作用.实际应用效果表明,所应用的研究方法对油气识别有较明显的地质效果并且达到了较高的测井解释符合率,对其他盆地复杂流体性质的测井解释具有重要的指导意义和参考价值.“,”This paper deals with the Paleogene low porosity and permeability oil and gas reservoirs in the Wenchang A Depression of the Pearl River Mouth Basin in northern South China Sea.The aim of the program is to test various methods for gas reservoir identification and evaluation under complex geological conditions.At the same time,we established the interpretation models using gas logging data in order to identify the condensate gas and distilled oil effectively.Results show that the methods we adopted are quite effective in identification and evaluation of liquid.It improved the geological interpretation of logging data and could be promoted to other oilfield for application and reference.