引言放射性测井是放射性测量中的一个重要部分,可以用来探测埋藏在地下深处的放射性矿床;或在金属矿和煤田的钻探中作地层的对比;或者服务于石油的钻探和开采。按工作的深度来分,前二者的深度不大,最多在数百公尺左右,而后者则可达数千公尺。前二者所用的电缆较短,仪器也多是小型的,有时一 Introduction Radioactive logging is an important part of radioactivity measurements that can be used to detect radioactive deposits buried deep underground; or stratigraphic correlations between metallogenic and coalfield drilling; or oil drilling and mining. According to the depth of work points, the depth of the first two are not large, up to hundreds of meters, while the latter up to several thousand meters. The first two cables are short, the instrument is mostly small, and sometimes one