Rotary drive assemblies

Details Rotary drive assemblies Rotary drive assemblies

1993-05-07

1994-09-20

Rada, Rinaldi I.

Tool driving or impacting

Advance causing or controlling means

Tool advances relative to drive

173152, 173216, E21B 304

Patent

active

053481046

ABSTRACT:
A well assembly including a drive string, a frame, a spindle mounted on the frame and means for rotating the spindle, is constructed to allow the upper end of the string to pass through the spindle. A nut with a non-circular downward protuberance is tightly, threadably engaged with the upper end of the drive stung. The spindle has a non-circular upward protuberance, and a tail bar snugly receives both protuberances. The tail bar supports the weight of the string and transmits rotary torque from the spindle to the string.

REFERENCES:
patent: 1363586 (1920-12-01), Hansen
patent: 1484362 (1924-02-01), Stone
patent: 1678307 (1928-07-01), Stone
patent: 3623558 (1971-11-01), Brown
patent: 3800887 (1974-04-01), West
patent: 3830315 (1974-08-01), Love
patent: 4150727 (1979-04-01), Shepherd
patent: 4393945 (1983-07-01), Rassieur
patent: 4423645 (1984-01-01), Abbott et al.
patent: 4984641 (1991-01-01), Pryor

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