Deep well drill hammer, including a shell, a piston; a drill bit, with a thrust shoulder and a large drill shoulder, a head and a glass; a separate door armor, connected to the hammer, and receiving the large drill bit There are also drilling bits.

摘要

A downhole Hammer Drilling with Casing with a piston, a drill bit with a Head,A Drill Rod and a Holder with a Plurality of segments including a proximal End, a distal end and a FLANGE for coupling to a Thrust shoulder of the drill.