大口径深孔钻具选用原则及建议  

Principle of Drilling Tools Selection for Large Diameter Borehole and the Suggestions

作　　者：王振志[1] 李艳丽[1] 李晓晖[1] 

机构地区：[1]石家庄探矿机械厂,河北石家庄050081

出　　处：《探矿工程（岩土钻掘工程）》2012年第3期14-18,共5页Exploration Engineering:Rock & Soil Drilling and Tunneling

摘　　要：为了适应深孔钻探的需要,减少孔内事故的发生,阐述了深孔钻具的选用原则,对钻铤、钻杆、转换接头、方钻杆的选用方法进行了具体介绍,并就经常遇到的钻柱切口问题、临界钻压和转速问题提出了建议,为施工单位进行合理的钻具选用和组合提供了参考。The paper discussed the principle of drilling tools selection for deep hole to avoid downhole trouble; introduced the selection of drill collar, drill pipe, conversion joint and kelly; and put forward the reference suggestions to frequently encountered milling keyway in drill string, critical drilling pressure and rotating speed.

关 键 词：深孔钻具 钻杆 钻铤 方钻杆 转换接头 

分 类 号：P634.4[天文地球—地质矿产勘探]