The gamma ray index is usually computed from a well log such as a gamma ray log.
自然伽马指数通常由自然伽马或其它测井曲线计算得到。
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。
Based on the features of mudstone with higher gamma ray than sandstone in sandstone -mudstone section, we can distinguish sandstone reservoir from the drilling profiles with gamma ray log.
在砂泥岩剖面中，泥岩往往比砂岩具有较高的自然伽马值，从而可以利用自然伽马测井将砂岩储层划分出来。
The log response of the gas reservoir is characterised by low gamma ray, self-potential reduction and high resistivity.
这种高产气层具有特征的电性反应，表现为自然伽马值低、自然电位显著负异常、电阻率高；
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。
A neutron gamma ray type of wireline log that is run to determine the amount of chlorine present in a formation.
用于确定地层中氯含量的一种中子-伽马电缆测井方法。
Spectral gamma-ray log has given a quantitative interpretation method for associated sandstone uranium deposit in Qianjiadian Sag, peripheral Miocene basin of Liaohe oilfield.
对辽河油田外围中生界盆地钱家店凹陷油气伴生可地浸砂岩型铀矿伽马能谱测井提出了定量解释方法。
Spectral gamma-ray log has given a quantitative interpretation method for associated sandstone uranium deposit in Qianjiadian Sag, peripheral Miocene basin of Liaohe oilfield.
对辽河油田外围中生界盆地钱家店凹陷油气伴生可地浸砂岩型铀矿伽马能谱测井提出了定量解释方法。
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