Method and apparatus for downhole tubular expansion
US7055597B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 16, 2003 |
| Grant date | Jun 6, 2006 |
| Priority date | — |
| Expiry date | Dec 16, 2023 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/134
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The present invention provides apparatus and methods for expanding tubulars in a wellbore. In one aspect, a process of sealing an annular area in a wellbore is provided in which a tubular having perforations at a predetermined location and a sleeve concentrically covering substantially all of the perforations is expanded into substantial contact with an inner diameter of a tubular, such as a casing or a liner. In another aspect, a process of sealing an annular area in a wellbore is provided in which a tubular having perforation at a predetermined location and a sleeve concentrically coving substantially all of the perforations is expanded into substantial contact with a junction between two tubulars, such as a liner and a casing, or between two liners.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.