NGS资料在老地层中的应用

Application of NGS Data to Palaeozoic Formation

王宣龙，张德峰，张福来．ＮＧＳ资料在老地层中的应用．测井技术，１９９７，２１（４）：２８０～２８３自然伽马能谱（ＮＧＳ）测井作为一种特殊的测井方法，在研究老地层的一些地质问题上具有一定的实用性。以埕北３０井和胜海古２井为例，运用自然伽马能谱测井资料，采用交会图等技术，评价下古生界碳酸盐岩地层的沉积环境、粘土矿物的类型。

Natural Gamma Ray Spectroscopy Logs from wells named Chengbei 30 and Shenghai Gu 2 are given as examples to show that NGS log is practical in studying such geological issues of Palaeozoic formation as the sedimentary environment of carbonate formation, the type of clay minerals, generative ability of shale or shaly formation of lower Palaeozoic group and the weathering action on granite gneiss formation of Archaean group and so on.