钻粒钻进在岩心勘探钻进中佔有重要的地位,在硬岩石中由于金刚石产量所限,金刚石钻进不能广泛采用的情况下,钻粒钻进几乎成为唯一的方法。而勘探愈往深部发展,岩石硬度愈大,这样钻粒钻进将来也更显得其重要。 此外,近年来又有关于钻粒钻进的新的创造(例如散弹式钻进等),自然又会对钻粒提出新的要求。 Drilling is an important part of core exploration and drilling. Due to the limited production of diamond in hard rock, diamond drilling is almost the only method that can not be widely used. The more exploration to the deeper development, the greater the hardness of the rock, so drill drilling in the future is even more important. In addition, in recent years, there have been new innovations in drilling boring (such as shotgun drilling, etc.) and naturally new requirements will be put on the boring.