3 datasets found

FR)L'invention concerne un procédé de forage auto-pénétrant et un outil générateur de poussée: l'outil (1) comprend N lames (2a, 2b, 2c, 2d). Chaque lame comporte K...

The invention concerns a method which consists in: introducing into a pre-drilled portion of a well (16) a drilling system comprising a drilling bit (11) assembled...

A drillpipe for a drill stem to drill a hole. The drill stem includes a drill string and a bottom hole assembly. The drillpipe includes a first end having a first...