摘要
介绍了回转反循环钻进、贝克冲击反循环钻进、射流反循环钻进、潜孔锤冲击反循环钻进和真空抽吸取样钻进等五种取岩屑钻进方法.
Process of collecting chip sample returned from drill hole, the related equipment, formula of calculating average assay of core and chip, as well as representativeness of chip are discussed.
出处
《地质与勘探》
CAS
CSCD
北大核心
1989年第2期63-64,F004,共3页
Geology and Exploration
