Method and apparatus for downhole sealing
US6425444B1 · kind B1 · utility
252Cited by
121References
57Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1999 |
| Grant date | Jul 30, 2002 |
| Priority date | — |
| Expiry date | Dec 22, 2019 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/103
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method of providing a downhole seal, such as a packer (12), in a drilled bore between inner tubing (11) and outer tubing (16) comprises: providing an intermediate tubing section (18) defining a seal arrangement for engaging with the inner tubing; and radially plastically deforming the intermediate tubing section downhole to form an annular extension (40a, 40b). The extension creates a sealing contact with the outer tubing (16).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.