孕镶金刚石钻头设计和临界钻进规程研究

Design of impregnated diamond drill bit and critical drilling parameters

摘要:

金刚石钻进是一种重要的钻进方法，在各国得到了广泛利用。金刚石钻头是这种钻进方法的主要碎岩工具。在中等及以上强度岩石中钻进时，多用孕镶金刚石钻头。一些国家在孕镶金刚石钻头设计中，考虑了多个岩石性质因素，取得了好的钻进效果，值得中国研究者关注。在金刚石钻进工艺中，提出了使用临界钻进规程的建议。临界钻进规程对保证正常钻进、安全生产、防止事故，具有重要意义。把好的钻头和好的钻进工艺结合起来，就可以大幅度提高钻进效率，为中国的经济建设作出更多的贡献。

Abstract:

Diamond drilling is an important method of drilling and used widely in various countries. Diamond drill bit is a main tool for fragmentating rock in this method. In some countries in drilling of medium-strength and above-strength rocks impregnated bits are used usually. In designing of the impregnated drill bits many rock character factors are considered and good results have been obtained. That should attract attention of Chinese researchers. In diamond drilling a suggestion of using critical drilling parameters has been put forward. The critical drilling parameters has important significance for normal drilling， safe production and preventing accidents. Combining the good drill bit with the good drilling parameters can increase drilling results substantially and make our more contributions to the performance economic construction of China.