For some sandstone reservoirs with high natural gamma ray existed in Ordos Basin, it is difficult to be correctly identified and to calculate its shale content with gamma ray log only.
对鄂尔多斯盆地存在的高自然伽马砂岩储层，仅用自然伽马测井资料难以正确识别并计算其泥质含量。
Natural gamma ray spectral log is a new type of well logging method.
自然伽马能谱测井是一种新的测井方法。
Natural gamma ray spectral log is a new type of well logging method.
自然伽马能谱测井是一种新的测井方法。
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