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高转速是提高金刚石钻进效率的重要措施之一。但却为孔内摩擦阻力所限制。减磨方法有：在钻具上涂复润滑脂，在冲洗液中混入可分散的或可溶性的油类或其他润滑剂等。在漏水或大量涌水地层钻进中，广泛采用涂复法。它明显地降低了钻具与井壁的摩擦阻力。因而钻具的纵向震动、提升或迴转的动力消耗都得到减少，钻具和金刚石钻头的寿命得到提高，利于提高转数和提高钻进效率。但由于油泥易堵孔内环状间隙，污染钻具，防碍起下钻操作，涂复操作也较麻烦，因此在普通不漏不涌水的钻孔中，仍应用混溶法。
High speed is one of the important measures to improve diamond drilling efficiency. But it is limited by the friction resistance in the hole. Antifriction methods are: Drill coated with grease, mixed with the fluid can be dispersed or soluble oils or other lubricants. In the leakage or flooding a lot of ground drilling, widely used coating method. It significantly reduces the frictional resistance between the tool and the shaft wall. As a result, the longitudinal vibration of the drilling tool, the power consumption for lifting or turning are reduced, and the life of the drilling tool and the diamond bit is improved, which is favorable for increasing the revolution number and improving the drilling efficiency. However, due to the sludge easily blocked holes within the annular gap, contaminated drilling tools, hamper the drilling operation, coating complex operation is also more troublesome, so not leak ordinary water drilling, still use the miscibility method.