Method and apparatus for expanding a welded connection
US6935430B2 · kind B2 · utility
48Cited by
5References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2003 |
| Grant date | Aug 30, 2005 |
| Priority date | — |
| Expiry date | Aug 9, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K2101/06
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The present invention generally relates to methods of connecting two expandable tubulars. In one aspect, the method includes flash welding the ends of the expandable tubulars together. Thereafter, the connected tubulars are lowered into the wellbore for expansion. The flash welding process provides a highly reliable joint for expansion. In another aspect, the present invention provides a method for expanding a non-uniform tubular. In one embodiment, the non-uniform tubular is formed by connecting two misaligned tubulars.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.