Drill pipe protector
US7055631B2 · kind B2 · utility
9Cited by
38References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2004 |
| Grant date | Jun 6, 2006 |
| Priority date | — |
| Expiry date | Nov 28, 2024 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B41/0078
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A drill pipe protector having a tubular sleeve that is attached to a section of drill pipe and resides over the outer diameter of the drill pipe while moving within an associated well casing or well hole. The sleeve has low-friction end pads positioned on the ends of the sleeve to reduce friction between the ends of the sleeve and the end of an adjacent thrust bearing collar used to hold the sleeve in place on the drill pipe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.