煤矿井下定向钻进配套钻头的选型与使用

Selection and application of drill bit for directional drilling in underground coal mine

合理选配和使用钻头是提高钻进效率和节省钻进成本的关键。结合煤矿井下定向钻孔施工的特点,提出了配套钻头的一般要求。介绍了目前常用钻头的类型和特点,重点介绍了3种不同冠部形状的导向钻头的适用性及选型依据。总结了钻头合理使用的注意事项,为煤矿井下定向钻孔施工合理选择和使用钻头提供了参考依据。

According to the characteristics of directional drilling in underground coal mines, the general require-ments of supporting bit were proposed, and the types and features of the currently used bit were introduced, then three directional bits of different crown were introduced about applicability and selection rule in detail, and the note of bit used correctly was summarized, providing a reference for selecting and using bit reasonably for direc-tional drilling in underground coal mines.