火山岩岩性识别是火山岩油气藏研究的基础工作,是展开火山岩储层研究的前提工作。本次将使用自然伽马测井、密度测井、中子测井和电阻率测井及M—N值交会图对某区块玄武岩、安山岩和流纹岩进行岩性识别。结果显示自然伽马测井、密度测井和M—N值交会图识别效果较好,中子测井识别效果一般,电阻率测井识别效果不好。 Volcanic lithology identification is the basic work of volcanic reservoirs, and is the precondition of volcanic reservoir research. This time, we use natural gamma ray logging, density logging, neutron logging, resistivity logging and M-N cross-plot to identify lithology of basalts, andesites and rhyolites in a block. The results show that natural gamma ray logging, density logging and M-N cross-plot have good recognition results, neutron logging identification effect is common and resistivity logging identification effect is not good.