Drilling riser with distributed buoyancy

    公开(公告)号:US09670740B2

    公开(公告)日:2017-06-06

    申请号:US15016496

    申请日:2016-02-05

    CPC classification number: E21B17/012 E21B19/004

    Abstract: A drilling riser configured to convey drilling materials between a drilling vessel and a subsea wellhead. The drilling riser has an upper section, and a lower section coupled via a connector to the upper section. The lower section has a buoyant material for distributed passive buoyancy of the lower section. The overall drilling riser is neutrally or negatively buoyant, whereas the lower section is positively buoyant when decoupled from the upper section and coupled to the subsea wellhead.

    DRILLING RISER WITH DISTRIBUTED BUOYANCY
    4.
    发明申请
    DRILLING RISER WITH DISTRIBUTED BUOYANCY 审中-公开
    钻井升降机与分布式的BUOYANCY

    公开(公告)号:US20160251911A1

    公开(公告)日:2016-09-01

    申请号:US15016496

    申请日:2016-02-05

    CPC classification number: E21B17/012 E21B19/004

    Abstract: A drilling riser configured to convey drilling materials between a drilling vessel and a subsea wellhead. The drilling riser has an upper section, and a lower section coupled via a connector to the upper section. The lower section has a buoyant material for distributed passive buoyancy of the lower section. The overall drilling riser is neutrally or negatively buoyant, whereas the lower section is positively buoyant when decoupled from the upper section and coupled to the subsea wellhead.

    Abstract translation: 钻井立管,其构造成在钻井船舶和海底井口之间传送钻井材料。 钻孔立管具有上部,并且下部通过连接器连接到上部。 下部具有用于下部分布的被动浮力的浮力材料。 整个钻井提升管是中性或负浮力的,而当从上部分离并耦合到海底井口时,下部是正向浮力。

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