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钻进工作实践表明,喷射—涡轮法目前使用的钻头,在常用方法条件下是完全可胜任的,但效益不明显。全俄钻探技术研究所的专家们在对喷射—涡轮机组上用的钻具进行理论力学分析基础上,设计出一种专门用喷射—涡轮法钻进的钻头。这种钻头的结构特点是,只在齿轮钻头中间的地方有一个装置。然而,这种设计虽然已应用到生产实践中,但对大口径喷射—涡轮钻进方法来说效果不是很大。因此科研生产公司和机械制造厂设计并制造一种用于喷射—涡轮法硬岩钻进的TB—111490和T3—UBP—9
The practice of drilling shows that the drill currently used in the jet-turbine method is completely capable under the common method conditions, but the benefits are not obvious. Based on theoretical mechanics analysis of the drilling tools used on the jet-turbine unit, experts from the All-Russian Drilling Technology Research Institute have designed a drill that is specially designed for jet-turbine drilling. The structural feature of this bit is that it has a device only in the middle of the gear bit. However, although this design has been applied to the production practice, it is not very effective for the large-diameter jet-turbine drilling method. As a result, research and manufacturing companies and machine builders have designed and built TB-111490 and T3-UBP-9 for jet-turbine hard rock drilling