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同位素  2011 

地层元素测井技术最新进展及其应用

, PP. 21-28

Keywords: 地层元素,能谱测井,技术进展

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Abstract:

地层元素测井是一种通过测量中子与地层元素原子核作用放出的伽马射线,得到元素含量进而确定矿物含量的中子伽马能谱测井技术,在复杂储层岩性识别、非常规储层评价等方面得到了广泛应用。本文简要介绍了元素能谱测井的核物理和地质基础,并对元素俘获能谱测井(ECS)、地球化学测井(GEM)和地层岩性能谱测井(FLS)等几种仪器技术指标进行分析;系统讨论了确定元素含量的谱分析技术及矿物含量的氧化物闭合模型和统计分析方法;总结了元素能谱测井在地层评价中的应用。最后提出采用可控中子源和多探测器系统、多参数测量是地层元素测井的发展趋势。

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