新的钻探泥浆(用于在操作时冷却钻头)也在开发中。
Also in development are new drilling muds that cool the drill bit during operation.
当拉出钻头时，横梁(上面缠有绝缘体和导体的金属结构)将它架起，形成一个新的支架。
While pulling out the drill, crossbeams (metal structures on which insulators and conductors are mounted) are attached to a new support.
在地层、钻井参数和钻头新度相同的情况下，钻头机械钻速的快慢主要取决于钻头齿面结构是否合理。
While drilling in the same formation with the same drilling parameters, the penetration rate of bits of the same degree of wear depends mainly on their cutting structures.
试验证明，新的钻头刃型在大批量汽车生产中使用效果很好。
Test has proved that the excellent result with new cutting edge shape of drills has been obtained during large mass-production of automobile.
该结论为PD C钻头水力结构的优化提供了新的思路。
This provides a new way of thinking for the optimization of hydraulic structures for PDC bits.
冲切成槽薄壁混凝土防渗墙施工技术是在原冲击成槽建造防渗墙的基础上，对冲击钻头和施工工艺加以改进，用扁钻头代替十字钻头，用正反两种循环系统进行泥浆循环的一种新防渗墙施工方法。
The present technique is a new thin cutoff wall construction method by modifying the original method as to use flat drill bit instead of cross bit and adopt positive and negative circulating system.
针对三牙轮钻头传统的二维啮合设计方法的低效率和二维啮合图的不真实性，开发出一个三牙轮钻头啮合设计新程序。
In the light of the inefficiency of the conventional 2 - D engagement design method for tricone bits and the untruth of the 2 - D engagement chart, a new Program for bit engagement design is develope.
针对三牙轮钻头传统的二维啮合设计方法的低效率和二维啮合图的不真实性，开发出一个三牙轮钻头啮合设计新程序。
In the light of the inefficiency of the conventional 2 - D engagement design method for tricone bits and the untruth of the 2 - D engagement chart, a new Program for bit engagement design is develope.
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