Title:
WRENCHING TONG
Document Type and Number:
WIPO Patent Application WO2003069113
Kind Code:
A3
Abstract:
Apparatus for applying torque to a first tubular relative to a second tubular, comprising a wrenching tong backup, wherein the wrenching tong is provided with teeth around a peripheral surface thereof, the backup tong is provided with at least one pinion, and the pinion meshes with the teeth in such a way that the tong (5) can be rotated relative to one another when the pinion is rotated. The apparatus may include a positioning apparatus for determining the position of the tubular relative to the tong. The apparatus may further include a torque measuring flange. In another aspect, a positioning tool may be mounted on a lower portion of the tong. The positioning tool includes a centering member for determining a position of the tong. The positioning tool includes a centering member for determining a position of the tubular and a positioning member for engaging the tubular.
Inventors:
PIETRAS BERND-GEORG
CARLSSON ANDREAS
SCHULZE-BECKINGHAUSEN JORG ERI
LIESS MARTIN
CARLSSON ANDREAS
SCHULZE-BECKINGHAUSEN JORG ERI
LIESS MARTIN
Application Number:
PCT/US2003/003195
Publication Date:
December 04, 2003
Filing Date:
February 04, 2003
Export Citation:
Assignee:
WEATHERFORD LAMB (US)
International Classes:
E21B19/16; (IPC1-7): E21B19/16; E21B19/18
Domestic Patent References:
| WO2001038688A1 | 2001-05-31 |
Other References:
See also references of EP 1474588A2
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