Drill pipe handling mechanism

Details Drill pipe handling mechanism Drill pipe handling mechanism

1977-07-13

1978-12-05

Purser, Ernest R.

Boring or penetrating the earth

With magazine for successively moving unconnected, oriented...

175 85, 173164, 81 5719, 214 25, E21B 1914

Patent

active

041281357

ABSTRACT:
A drill pipe handling mechanism for a drilling rig includes spaced apart upper and lower arms mounted on a shaft which is mounted for pivotal and limited axial movement with respect to an axis which is spaced from and parallel to the drilling axis. The lower arm includes a receptacle for the lower end of a drill pipe section. The upper arm includes a drill pipe holder having a power actuated movable gate section. A drill pipe retainer is pivotally mounted on the shaft above the pipe holder and is operated by a separate power actuator. Opposed power actuated pipe gripping and holding wrenches are disposed on the lower part of the rig mast for gripping and holding a drill pipe section while threaded joints are broken loose by a rotary head connected to the upper end of the drill string. A power actuated wrench is mounted for pivotal movement into pipe gripping position for breaking loose threaded joints which cannot be loosened by the rotary head.

REFERENCES:
patent: 2450934 (1948-10-01), Calhoun
patent: 3291225 (1966-12-01), Foran
patent: 3506075 (1970-04-01), Attebo
patent: 3680412 (1972-08-01), Mayer et al.
patent: 3696872 (1972-10-01), Jonsson
patent: 3762578 (1973-10-01), Cooper et al.
patent: 3844547 (1974-10-01), Lang et al.
patent: 4030542 (1977-06-01), Poe et al.

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