绳索取心冲击回转钻具组合设计及应用试验

Combination Design of Wire-line Coring & Percussive Rotary Drilling Tool and the Application Test

摘要:

绳索取心冲击回转钻具是将绳索取心和冲击回转两种钻进工艺的优势进行叠加设计出的新钻具，该钻具对提高钻探生产效率和施工质量有显著的效果。通过设计及应用试验，发现了内管总成的“漂浮现象”及原钻具内管总成的“减振效应”对两种工艺组合应用影响的关键技术难题，并采取了有效的解决方法，为今后该技术的发展提供了参考。

Abstract:

Wire-line coring and percussive rotary drilling tool is a new technology combined the advantages of wire-line and percussive rotary technology. It has obvious effect in improving drilling efficiency and construction quality. By the application test, the key technical problems affected the combination application were found: floating of inner assembly and damping effect of original inner assembly. The effective solving methods were adopted, which could be the reference for future development of this technology.