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.
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。
The radioactivity variation of the shallow part of Yellow River delta with the natural gamma ray spectrum logging from 16 Wells is studied.
通过16口浅层自然伽马能谱测井资料分析黄河三角洲浅层放射性的区域变化状况。
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