Downhole tubing
US6708767B2 · kind B2 · utility
85Cited by
37References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 25, 2001 |
| Grant date | Mar 23, 2004 |
| Priority date | — |
| Expiry date | Nov 28, 2021 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/105
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A downhole apparatus comprises a plurality of tubing sections. Each tubing section has substantially cylindrical portions initially of a first diameter for coupling to end portions of adjacent tubing sections. The end portions are expandable to a larger second diameter. Each tubing section also has an intermediate folded wall portions initially in a folded configuration. The intermediate folded wall portions are unfoldable to define a substantially cylindrical form of a third diameter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.