High pressure sleeve for dual bore hp riser
AssigneeOcean Riser Systems AS
InventorHarald Moksvold
Life of this patent
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Abstract
A high pressure sleeve for a dual bore high pressure riser is provided. The high pressure sleeve is arranged for forming a connection between either the annulus bore and the high pressure sleeve, or for forming a connection between the high pressure sleeve and the production bore. The choice of connection is made by rotation of the sleeve.
Claims5
A high pressure sleeve for a dual bore high pressure riser, wherein said high pressure sleeve is construed and arranged for forming a connection between either an annulus bore and the high pressure sleeve, or for forming a connection between the high pressure sleeve and a production bore, and wherein a choice of connection is made by rotation of said sleeve.
A method for the connection of a high pressure sleeve to either an annulus bore or a production bore of a dual bore HP riser when conducting workover operations, wherein switching from either the annulus bore or the production bore comprises the following steps:
- lifting the high pressure sleeve from a connected position with a first bore,
- rotating the high pressure sleeve to a specified degree, and
- lowering the high pressure sleeve into the second bore, such that a fluid connection is formed between the second bore and the high pressure sleeve.
Dependencies are inferred from the claim text.