A method and apparatus for installing casing hangers in a wellbore using an externally activated gripping system is described. The purpose is to provide an annulus seal that can also be released and the hanger position adjusted. It appears to comprise an annular bush which is compressed radially by
Composite sealing gasket
- Publisher
- Elsevier Science
- Year
- 2010
- Tongue
- English
- Weight
- 236 KB
- Volume
- 2010
- Category
- Article
- ISSN
- 1350-4789
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โฆ Synopsis
the bearing. This circumferentially uniform fluid pressure, by itself, or in combination with a flexible lip (44), prevents contaminant ingress between the rotating shaft and the end-cap of the bearing housing. The structure (15) that creates the tangential fluid-flow is part of the removable cartridge (12,14), which means that this bearing seal eliminates the need to machine or drill a tangentially oriented passage in the bearing housing.
๐ SIMILAR VOLUMES
## Patents fuid, or dissolve partially in certain fluids and lose weight. An average percentage weight change is calculated across nine test samples.
but they can also be oriented to provide an unequal distribution of pressure across the segment if this is desired. The end seal is preferably constructed with a plane of symmetry such that the end seal is reversible, and can be used in either side of a conventional splice case. Figure 1 shows a ca
tain close alignment with the shaft. A series of these shoes circumferentially make up the entire seal. There is a secondary seal to prevent leakage around the outside of the shoe, past the spring.
## Manufacture Generale de Joints, France A heat-sealable seal for the mouth of a vessel is described. It includes a substrate made of an expanded polyester layer, connected by adhesive to a lid that includes an aluminium foil and a heat-sealable film. The aluminium foil and the film are connected