Directional Drilling Applications in Adverse Geological Conditions -The Qinghe River Directional Drilling in Qingtie Route

摘要

It analyzed the impacts of adverse geological conditions in the Qinghe River on directional drilling construction. By analysis and comparison of various common river crossing methods, it showed the superiority of directional drilling method. It is proposed directional drilling construction design and constructive role for the future of similar geological condition.