基于岩心孔隙度合成的测井差比方法在气层界别中的应用

The Application of Differential Ratio Method of Core Porosity Combination Logging on Identification of Gas Layer

声波、密度测井是成熟的常规找气方法技术。以岩心孔隙度为基准合成纯水层的声波、密度测井 ,比照实测的气层声波和密度 ,构筑相应的差比值进行气层的分类界定 ,提高了应用的真实性和可靠性。该方法原理简单、操作简便 。

Acoustic logging and density logging are the ripe and conventional techniques for gas finding.The differential ratio between gas layer’s and pure water layer ’s logging data which based on the core porosity can be used to identify gas layer.This can improve data reliable.This method has simple principal,easy to operate and have good effect on identification of gas layer in tight sand,upper Palaeozonic Era,Daniudi gas field,Ordos basin.