Self-lubricating expansion mandrel for expandable tubular
US7571774B2 · kind B2 · utility
20Cited by
711References
45Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 18, 2003 |
| Grant date | Aug 11, 2009 |
| Priority date | — |
| Expiry date | Nov 11, 2024 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/105
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A self-lubricating expansion mandrel includes a system for lubricating the interface between the self-lubricating expansion mandrel and a tubular member during the radial expansion of the tubular member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.