Mechanism for connecting and disconnecting tubulars

Details Mechanism for connecting and disconnecting tubulars Mechanism for connecting and disconnecting tubulars

1997-03-05

1998-11-24

Smith, James G.

Tools

Wrench, screwdriver, or driver therefor

Machine

81 5715, 81 5734, B25B 1350

Patent

active

058393307

ABSTRACT:
A top drive is used to connect successive lengths of casing. The casing is gripped by a mechanism which comprises a support which is attached to the top drive by a drive plate. A circular plate is rotatably mounted in the support and is associated with four jaw assemblies. In use the mechanism is lowered onto a length of casing until the circular plate engages the top of the casing. When the top drive is rotated in one sense the support rotates relative to the circular plate. This causes toothed cylinders to rotate which, in turn, rotates eccentric members which advance the jaws into gripping engagement with the casing. Further rotation of the top drive rotates the casing and screws it into the casing below.

REFERENCES:
patent: 2668689 (1954-02-01), Cormany
patent: 2862690 (1958-12-01), Mason
patent: 4372026 (1983-02-01), Mosing
patent: 4401000 (1983-08-01), Kinzbach
patent: 4442736 (1984-04-01), True et al.
patent: 4570706 (1986-02-01), Pugnet
patent: 4604922 (1986-08-01), Soutsos
patent: 4753300 (1988-06-01), Shaw et al.
patent: 4843924 (1989-07-01), Hauk
patent: 4867236 (1989-09-01), Haney et al.
patent: 5036927 (1991-08-01), Willis
patent: 5161439 (1992-11-01), Wesch, Jr.
patent: 5271298 (1993-12-01), Gazel-Anthoine
PCT/EP97/03568 PCT, 1997, Int'l Search Report (This is the PCT counterpart of the present US Application).

Affiliated with

Also associated with

Rating

Mechanism for connecting and disconnecting tubulars does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Mechanism for connecting and disconnecting tubulars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mechanism for connecting and disconnecting tubulars will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1693205