中文摘要：

应用元素俘获谱测井（ECS）得到的元素含量，再结合火成岩定量矿物成分分类法（CIPW）标准矿物法计算得到中酸性火成岩的标准矿物体积含量，与矿物密度加权得到骨架密度和岩心颗粒密度对比，现场应用证明计算得到的矿物含量可靠。应用ECS数据进行岩性判别的TAS图版法和常规曲线图版岩性法，结合火成岩定量矿物成分分类法按标准矿物进行岩性划分，得到综合岩性与薄片对比效果较好。该方法为测井岩性评价提供了岩性识别的新手段。

英文摘要：

Elements content of Elemental Capture Spectroscopy Log （ECS） and CIPW standard mineral method are use to calculate standard mineral volume content of acidic igneous rock. It is contrasted with framework density calculated mineral density and rock grain density. Practice applications prove that the mineral content calculated is reliable. Based on TAS plate that identifies lithology with ECS data and conventional logging curve method, and combined with QAPF standard mineral classification, classified is the lithology in accordance with the standard mineral content. The final lithology obtained from QAPF is contrasted with rock sections, the result of which is better. The method provides new means of lithology identification for log evaluation.