金刚石钻进的、岩心管3、异径接头4和钻杆5等所组成。
金刚石钻进是钻探工程中一种比较先进的钻进方法。
Diamond drilling is a kind of advanced way in drilling engineering.
在软的全风化及强风化花岗岩中，金刚石钻进比功值低于冲击凿碎比功值；
The value of SEDD is nearly equal to that of specific energy of percussive drilling(SEPD) in moderately weathered granite.
同时，在风化花岗岩金刚石钻进中采用钻进比功曲线对地层进行了分级研究。
The methods have been used to classify the weathered granite formation by diamond penetrating specific energy curve.
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