Selection of Core Drilling Method for WFSD-2 of Wenchuan Earthquake Scientific Drilling Project

Abstract:

This article introduces the selection of core drilling method for the second borehole of Wenchuan Earthquake Scientific Drilling Project. According to the formation condition of Longmenshan fault zone and on the basis of technical and economical evaluation on the existing core drilling methods, top-drive and wireline coring method has been selected out as the deep hole coring method of Wenchuan Earthquake Scientific Drilling Project.