Air percussion drilling assembly for directional drilling applic

Details Air percussion drilling assembly for directional drilling applic Air percussion drilling assembly for directional drilling applic

1992-07-17

1994-04-26

Britts, Ramon S.

Boring or penetrating the earth

Processes

Boring curved or redirected bores

175296, 175298, 173 17, E21B 704, E21B 414

Patent

active

053058372

ABSTRACT:
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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patent: 3741316 (1973-06-01), Alajournine
patent: 3899033 (1975-08-01), Van Huisen
patent: 4346767 (1982-08-01), Vaughan
patent: 4785898 (1988-11-01), Kostylev et al.
patent: 4858701 (1989-08-01), Weyer
patent: 4932483 (1990-06-01), Rear
patent: 5094303 (1992-03-01), Fenne

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