Method of creating a downhole sealing and hanging device
US6390201B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 5, 2000 |
| Grant date | May 21, 2002 |
| Priority date | — |
| Expiry date | Jul 5, 2020 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/103
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method of creating a downhole sealing and hanging device comprising the steps of lowering a first tubular in a well bore, then lowering through the first tubular a second tubular with slightly smaller external diameter than the internal diameter of the first tubular, and made of formable steel, in such a way that the upper section of the second tubular remains within the lower section of the first tubular, and finally plastically expanding at least the upper section of the second tubular by application of a radial force to the interior of the upper section of the second tubular thereby creating an interference fit capable of forming a bond and a hydraulic seal between the first and second tubular.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.