The contents of sand,shale or carbonate in complex formations can be obtained from logs of Elemental Capture Spectroscopy Sonde (ECS).

• 元素俘获谱测井(ECS)利用定量测得的钙等多种元素的含量,计算岩石的碳酸盐岩含量,进而进行岩性识别和地层对比;