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常规钻头在坚硬、致密、弱研磨性地层（即所谓“打滑”地层）使用，时效极低，有时根本不能进尺。如何对付“打滑”地层的钻进，研制适应该地层特点的金刚石钻头，是当前钻探生产中急待解决的课题。从1980年开始，我们对“打滑”地层用电镀人造金刚石孕镶钻头进行了研制与试验，取得了一定效果，现将有关情况论述如下。一、“打滑”地层与钻头打滑习惯上称为“打滑”地层的岩石，主要特点是岩石坚硬、结构致密、研磨性弱。常常表现为压入硬度大、石英含量多、矿物粒径小，因而研磨能力差。
Conventional drill bits are used in hard, dense, weakly abrasive formations (so-called “slippery” formations), with very low age and sometimes no footage. How to deal with the “slippery” strata drilling, the development of diamond strata suited to the characteristics of the formation, the current drilling production is an urgent issue. Since 1980, we have developed and tested electroplating artificial diamond impregnated drill bits on the “slippery” strata, and achieved some results. The relevant situations are as follows. First, the “slippery” strata and bit slippage Traditionally known as “slippery” strata of rock, the main features of the rock hard, dense structure, grinding weak. Often manifested as pressed into the hardness, quartz content, mineral particle size is small, so poor grinding ability.