Device for clamping drill pipe and the like in mouse hole pipe

Details Device for clamping drill pipe and the like in mouse hole pipe Device for clamping drill pipe and the like in mouse hole pipe

1986-03-25

1988-07-12

Bilinsky, Z. R.

Chucks or sockets

Socket type

Self-grasping

81 5734, 173164, 279 33, 279 38, B25B 508, E21B 1916

Patent

active

047565381

ABSTRACT:
The invention relates to a clamping device used for making up or breaking apart joints of drill pipe, drill collars and the like in mouse hole pipe during oil drilling operation. A clamping means of the device firstly clamps the drill pipe therebetween during its moving down and centripetally simultaneously by the self-weight of drill pipe to be clamped, then tightly clamps the drill pipe with a force generated by rollers' moving inwardly to the center of the device along the concavity of the turning plate with the rotation of a kelly. It can be used instead of a back tong when making-up joint in mouse hole pipe with a tong.

REFERENCES:
patent: 3689060 (1972-09-01), Hensley, Jr.
patent: 3760469 (1973-09-01), Brown
patent: 4147215 (1979-04-01), Hodge et al.
patent: 4170908 (1979-10-01), Peveto et al.
patent: 4200010 (1980-04-01), Hewitt
patent: 4221269 (1980-09-01), Hudson
patent: 4402239 (1983-09-01), Mooney
patent: 4458562 (1984-07-01), Jackson
patent: 4576254 (1986-03-01), Cox

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