Construction Technology and Experience of WFSD-3 Hole of Wenchuan Earthquake Fault Scientific Drilling Project
QI Xue-zhong · Exploration Engineering(Rock & Soil Drilling and Tunneling) · 2012
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.