Effectiveness of Using Double Ejector Drilling Rigs.

被引：0
|
作者：
Plekhanov, M.I.
Trukhin, G.V.
机构：
来源：
Razvedka i Okhrana Nedr | 1977年 / 12期
关键词：
BOREHOLES - Diamond Drilling;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
It is shown that optimal drilling indices were obtained when double ejector drilling rigs with special impregnated single-layer diamond crowns were used for drilling under complex geological conditions characterized by crushed, highly cracked, and abrasive rocks.
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页码：37 / 41
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