Well tubing rotator
US6543533B2 · kind B2 · utility
14Cited by
46References
42Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 2, 2001 |
| Grant date | Apr 8, 2003 |
| Priority date | — |
| Expiry date | Mar 2, 2021 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/0415
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A mandrel rotator is provided is mounted in a housing for coupling to a well casing head. The mandrel rotator comprises of an annular gear having external gear teeth and an axial opening. The annular gear is coupled to a mandrel outer surface, such that rotation of the annular gear causes rotation of the mandrel. A retainer limits or prevents axial movement of gear within the housing. A second gear is coupled to the annular gear for rotating the annular gear.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.