应用岩心地面自然伽马曲线与测井自然伽马曲线对比法对岩心进行归位，进而对岩心样品进行深度校正，在很大程度上提高了岩心资料的准确性。
Contrasting core ground gamma curve with logging gamma curve locate the core, and then emend the depth of the core sample, which improve veracity of the core data.
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。
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.
自然伽马测井测量的是地层总的自然伽马放射性，是套管井测井的一种最基本的方法。
What natural gamma well logging measured is total natural gamma radioactivity in layer, and it is a kind of most basic method in casing pipe well logging.
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