This paper presents some methods for computing the shale content and lithological analysis of shale-sand strata,which include the CNL/effective porosity differential method and the CNL/CDL crossplot.

• 因此提出了补偿中子与补偿密度交会法进行砂泥岩剖面岩性分析、补偿中子与有效孔隙度差值法进行泥质含量求取等方法。