汶川地震断裂带科学钻探项目WFSD-3孔施工技术与体会

Construction Technology and Experience of WFSD-3 Hole of Wenchuan Earthquake Fault Scientific Drilling Project

摘要:

WFSD-3孔是汶川地震科学钻探项目的系列钻孔之一，历经2年多的施工，攻克了世界罕见的复杂地层钻进、大直径原状样取心和高地应力下钻孔护壁重重技术难关，圆满完成了施工任务。重点介绍了WFSD-3孔施工技术与经验，并对施工若干技术问题提出探讨与认识。

Abstract:

The WFSD-3 hole is one of the series of boreholes of Wenchuan earthquake fault scientific drilling project. During 2 years’ construction, many technical challenges, such as drilling in complex strata, large diameter undisturbed core sampling and borehole wall protecting under high geo-stress were overcome. This article especially focused on the construction technology and experience of the WFSD-3 hole and discussed some technical problems.