Wire-line Coring Drilling Technology in Complex Formation in Xinjiang Wulagen Mining Area

Abstract:

Based on the analysis on technical difficulties in wire-line coring drilling in Xinjiang Wulagen mining area, the paper introduced the technical methods in bit adjusting, drilling tool grading, mud application and operation technique, and the drilling effects were compared.

Key words:complex formation; wire-line core drilling; bit burnt; drill rod sticking; loss of circulation; Wulagen mining area