Kelly drive bushing adapter

Details Kelly drive bushing adapter Kelly drive bushing adapter

1980-01-04

1982-03-02

Purser, Ernest R.

Boring or penetrating the earth

Convertible

64 235, 166 65R, 175 45, 175103, 175195, 173165, E21B 708, E21B 306

Patent

active

043174930

ABSTRACT:
An adapter is provided for positioning a kelly drive bushing of a surface drilling assembly in spaced relationship to an associated rotary table. The adapter permits the wireline of an electronic steering assembly to pass through the central aperture in the rotary table below the drive bushing to surface readout equipment, enabling the electronic steering assembly to be employed for drilling directional bores without removal of the kelly.

REFERENCES:
patent: 3007534 (1961-11-01), Salnikov et al.
patent: 3038547 (1962-06-01), Deely

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