Apparatus for facilitating the connection of tubulars using a top drive
US6742584B1 · kind B1 · utility
125Cited by
28References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 11, 2001 |
| Grant date | Jun 1, 2004 |
| Priority date | — |
| Expiry date | Jul 11, 2021 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B3/022
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An apparatus for facilitating the connection of tubulars using a top drive, which apparatus comprises a body (2; 102) connectable to said top drive, said body (2; 102) comprising at least one gripping element (5; 105) radially displaceable by hydraulic or pneumatic fluid to drivingly engage said tubular (30; 110) to permit a screw connection between said tubular and a further tubular to be tightened to the required torque.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.