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1)  multi-casting drilling
多级跟管钻进
1.
Application of multi-casting drilling to engineering investigation of Gongzha landslides for Suwalong Hydropower Station
多级跟管钻进工艺在苏哇龙水电站贡扎滑坡体工程勘察中的应用
2)  drilling with simultaneous casing
跟管钻进
1.
The paper introduced the characteristics of DTH drilling with simultaneous casing technology,SP series of simultaneous casing drilling tool and the application of DTH drilling with simultaneous casing technology in drilling in complicated formation,such as control of geological hazard,hydropower construction,foundation treatment for urban high-rise building,highway and rai.
跟管钻进技术已发展成为对付复杂地层钻进的一种有效方法,主要介绍空气潜孔锤跟管钻进技术、SP系列跟管钻具的特点以及空气潜孔锤跟管钻进技术在地质灾害、水电建设、城市高层建筑地基处理、公路、铁道建设工程等复杂地层钻进的应用。
3)  Difficult Ground Condition
跟套管钻进
4)  drilling speed of following pipe
跟管钻进速度
5)  DTH with simultaneous casing
潜孔锤跟管钻进
6)  eccentric casing drilling
偏心跟管钻进
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