Sleeve valve and method for its assembly
US6869063B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2001 |
| Grant date | Mar 22, 2005 |
| Priority date | — |
| Expiry date | Nov 5, 2021 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B2200/02
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A sleeve valve device for fluid flow between a hydrocarbon reservoir and a well in the hydrocarbon reservoir comprises a fixed outer sleeve (1) and an inner sleeve (2) which is rotatable in order to bring apertures (3, 4) in the outer sleeve and the inner sleeve into and out of correspondence with each other, for adjustment of the fluid flow through the apertures. The inner sleeve comprises at least one external bulb (5) with a surface (6) which, in an unassembled, unloaded condition of the outer sleeve (1) and the inner sleeve (2), is at a distance (11) from the inner sleeve's centre line (9) which is greater than the outer sleeve's internal radius (r2). The bulb (5) has a surface (6) which is larger than a corresponding aperture (3) in the outer sleeve, and by means of a rotation of the inner sleeve (2) to a closed position of the sleeve valve, the bulb (5) can be caused to cover the outer sleeve's aperture (3), whereby the bulb (5) in the closed position encompasses the outer sleeve's aperture (3) with a sealing contact pressure in an area (8) round the outer sleeve's aperture (3).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.