Downhole tool with actuable barrier
US7322408B2 · kind B2 · utility
35Cited by
4References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 8, 2003 |
| Grant date | Jan 29, 2008 |
| Priority date | — |
| Expiry date | Dec 8, 2023 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B37/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A downhole tool for use in a cased or lined well bore (40), the tool including a barrier (36) arranged on an outer surface of the tool. The barrier may be of a resilient material so that it can be deformed on actuation to control the passage of fluid between the tool and the casing or liner. Fluid flow is thus selectively diverted through flow paths (22) in the tool. Embodiments are described for actuating the barrier by hydraulic means and for filtering the fluid within the flow paths.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.