Air percussion drilling hammer for directional drilling...

Details Air percussion drilling hammer for directional drilling... Air percussion drilling hammer for directional drilling...

E - Fixed Constructions

21

B

E21B 4/16 (2006.01) E21B 4/14 (2006.01) E21C 3/04 (1990.01)

Patent

CA 2099917

An air percussion hammer drill is disclosed for operation in an earthen formation. The air compression hammer mechanism comprises a piston that reciprocates while simultaneously rotating within its housing. A hammer drill bit slidably keyed to the bottom of the piston transfers the impact energy to the formation and rotates during operation independent of an attached drill string. The air percussion hammer assembly is therefore ideally suited to directional drilling activities.

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