✦ LIBER ✦

Butterfly valve with a rigid seal

Publisher: Elsevier Science
Year: 2009
Tongue: English
Weight: 144 KB
Volume: 2009
Category: Article
ISSN: 1350-4789
DOI: 10.1016/s1350-4789(09)70498-2

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✦ Synopsis

A tool that is intended for the repair of a sealing land downhole forms the subject of this patent. A motor rotates a polishing cylinder that features spirally-wound vanes. A reservoir of resin or other repair material is connected to an injection pump to deliver the material as the vanes are rotating. The material exits between the vanes so that the vanes can spread it and work it into surface irregularities.

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