Sealing apparatus and method

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United States of America Patent

PATENT NO 8770541
APP PUB NO 20120241663A1
SERIAL NO

13391674

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Abstract

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A sealing apparatus and method is disclosed, particularly for sealing around an elongate member which passes through a throughbore of a valve device, the apparatus having an upper sealing element and a lower sealing element, each being adapted to change configuration from an open configuration to a sealed configuration within the valve device to seal the throughbore of the valve device around the elongate member. The upper and lower sealing elements are separate and moveable independently from one another, and are configured to be actuated between open and sealed configurations by a common actuator. This actuation reduces the stack height and the weight of the valve, and reduces the number of well seals.

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Patent Owner(s)

Patent OwnerAddress
NATIONAL OILWELL VARCO UK LIMITEDMANCHESTER M34 5JA

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Wood, Carl Richard Alford, GB 5 26

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