Based on the prospecting practices of many years, the paper has summarized 8 general lithologic features of core under normal stratigraphic sequence before drilling to the coal-beds in drill hole.
根据多年的勘查实践，总结提出了八条正常地层层序下钻孔见煤前的一般岩心岩性特征，对指导见煤预告等大有裨益。
The general use of seismic prospecting and logging is an efficient means for the improvement and safety and scientific management of the deep well injection.
地震和测井的联合监测与测试，也是提高深井灌注效果、保证安全和科学管理的有效手段。
According to the related documents and the author's practical experience, the author has probed the applicated general situation of REE in the geological scientific research and prospecting works.
参阅有关资料及笔者实际体会，探讨了稀土元素在地质科研及找矿工作中的应用概况。
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