Rotating coupling

Details Rotating coupling Rotating coupling

1985-09-12

1987-04-07

Novosad, Stephen J.

Boring or penetrating the earth

With above-ground means for handling drilling fluid or cutting

With valve

166339, 173 57, E21B 1702

Patent

active

046553029

ABSTRACT:
There is described a coupling for in use lifting and supporting oil drilling strings while allowing rotation of the drill strike and calculation of mud through the drill. The coupling comprises an upper body and a lower body. The lower body is rotatably mounted on the upper body and has support means for lifting drill pipes. The coupling is provided with a through passage for supply of mud to the drill pipes and a valve member is provided to control mud supply.

REFERENCES:
patent: 3433252 (1969-03-01), Kennard
patent: 3857450 (1974-12-01), Guier
patent: 3915243 (1975-10-01), Hisey et al.
patent: 3915244 (1975-10-01), Brown
patent: 4037672 (1977-07-01), Hodge
patent: 4161990 (1979-07-01), Forsberg et al.
patent: 4413844 (1983-11-01), N'Guyen Duc et al.
patent: 4416337 (1983-11-01), Phillips et al.

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