发明名称 |
APPARATUS FOR VENTING AN ANNULAR SPACE BETWEEN A LINER AND A PIPELINE OF A SUBSEA RISER |
摘要 |
An apparatus for venting an annular space between a liner and a pipeline of a subsea riser used for conveying hydrocarbons, the apparatus comprising a permeate recovery device for recovering permeate passing through the liner into the annular space. The permeate recovery device includes a first vent port in a wall of the pipeline at or adjacent a lower region of the pipeline and communicating with a permeate recovery line defining a flow path between the annular space and a permeate collection vessel. A one-way valve is associated with the permeate recovery line for preventing flow from the permeate recovery line into the annular space. A gaseous permeate recovery line connected to a second vent port at an upper region of the pipeline defining a flow of gaseous permeate from the annular space.
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申请公布号 |
US2010108321(A1) |
申请公布日期 |
2010.05.06 |
申请号 |
US20080594428 |
申请日期 |
2008.02.08 |
申请人 |
HALL SCOTT;DENNIEL SYLVAIN;REMERY JEROEN |
发明人 |
HALL SCOTT;DENNIEL SYLVAIN;REMERY JEROEN |
分类号 |
E21B43/01;E21B17/01 |
主分类号 |
E21B43/01 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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