Copper protected fairings
    7.
    发明授权
    Copper protected fairings 失效
    铜保护整流罩

    公开(公告)号:US6067922A

    公开(公告)日:2000-05-30

    申请号:US67366

    申请日:1998-04-27

    IPC分类号: B63B21/66 F15D1/10 B63B35/44

    CPC分类号: B63B21/663

    摘要: A fairing system is disclosed for protecting a cylindrical marine element from drag and vortex induced vibration. A noncorrosive fairing shroud is rotatably mounted about the cylindrical marine element and defines an annular region between the exterior of the cylindrical marine element and the inside of the fairing shroud and at least one copper element is mounted at the annular region to discourage marine growth at the fairing shroud-cylindrical marine element interface. This enables the fairing to remain free to weathervane to orient most effectively with the current Another aspect of the present invention is a method for protecting a substantially cylindrical marine element from vortex-induced vibration in which a rotatable fairing is installed about the marine element and a marine growth inhibitor is mounted in active communication with the annular interface of the rotatable fairing and the cylindrical marine element.

    摘要翻译: 公开了一种用于保护圆柱形海洋元件免受阻力和涡流引起的振动的整流罩系统。 非腐蚀性整流罩围绕圆柱形海洋元件可旋转地安装并且在圆柱形海洋元件的外部和整流罩之间限定一个环形区域,并且至少一个铜元件安装在环形区域以阻止海洋生长 整流罩 - 圆柱形海洋元件接口。 这使得整流罩能够保持自由以达到最有效的目的。本发明的另一方面是一种用于保护基本上圆柱形的海洋元件免受漩涡引起的振动的方法,其中旋转的整流罩安装在海洋元件周围, 海洋生长抑制剂安装成与可旋转整流罩和圆柱形海洋元件的环形界面主动连通。

    Fairings for deepwater drilling risers
    9.
    发明授权
    Fairings for deepwater drilling risers 失效
    深水钻井立管整流罩

    公开(公告)号:US6010278A

    公开(公告)日:2000-01-04

    申请号:US896338

    申请日:1997-07-18

    摘要: A fairing system is disclosed for installation about a drilling riser deployed in a deepwater application. In another aspect of the invention, a method for deploying a drilling riser fairing system is disclosed in which a first retaining ring is installed on a buoyancy can encircling the drilling riser and a drilling riser fairings is installed above the first retaining ring. Drilling riser fairing installation folds a pair of fairing sides of a fairing shroud about an axially disposed hinge to surround the buoyancy can above the first retaining ring. A tail connection system secures the tail ends of the fairing sides together and a pair of struts are installed to further secure the fairing sides together. A plurality of interior bearing pads are provided on the internal circumference of the fairing shroud and axial bearing pads are provided on flanges at the upper and lower edges of the fairing shroud. In yet another aspect of the present invention, a method for stowing a drilling riser fairings is disclosed in which a lift harness is connected to lift eyes on the exterior of the fairing shroud and the tail connection system is released from the tail edge of the fairing sides. Struts are removed from the upper and lower flanges of the fairing sides which are then opened up about their hinged connection. The open fairing shroud is lifted and set down in a nested relationship with other removed fairing shrouds.

    摘要翻译: 公开了一种用于在深水应用中部署的钻井提升机的安装的整流罩系统。 在本发明的另一方面,公开了一种用于展开钻取立管整流装置的方法,其中第一保持环安装在环绕钻井立管的浮力罐上,并且钻井立管整流罩安装在第一保持环上方。 钻井升降整流装置将围绕轴向设置的铰链的整流罩的一对整流罩折叠以围绕第一保持环上方的浮力罐。 尾部连接系统将整流罩侧面的尾端固定在一起,并安装一对支柱以进一步将整流罩侧固定在一起。 在整流罩的内圆周上设置有多个内部轴承瓦块,并且在整流罩的上边缘和下边缘处的凸缘上设置有轴向轴承瓦块。 在本发明的另一方面,公开了一种用于收起钻取立管整流罩的方法,其中连接起重线束以在整流罩的外部抬起眼睛,并且尾连接系统从整流罩的尾部边缘释放 边。 支柱从整流罩侧面的上下凸缘上拆下,然后围绕铰链连接开口。 开放的整流罩被提升,与其他拆卸的整流罩保持嵌套关系。

    Vortex induced vibration protection for deepwater drilling risers
    10.
    发明授权
    Vortex induced vibration protection for deepwater drilling risers 失效
    用于深水钻井立管的涡旋诱发振动保护

    公开(公告)号:US6048136A

    公开(公告)日:2000-04-11

    申请号:US899499

    申请日:1997-07-19

    IPC分类号: B63B21/50 E21B17/01 F15D1/10

    CPC分类号: B63B21/502 E21B17/01

    摘要: The present invention is a method for deploying a drilling riser VIV suppression system in which a first retaining ring is installed on a syntactic foam buoyancy module encircling the drilling riser with a spring loaded connection. The spring loaded connection is capable of adjusting the diameter of the retaining ring automatically to compensate for compression of the syntactic foam under the influence of water pressure. VIV suppression provisions is then installed about the drilling riser using the first retaining ring as a load shoulder.

    摘要翻译: 本发明是一种用于部署钻井立管VIV抑制系统的方法,其中第一保持环安装在环绕钻井立管的复合泡沫浮力模块上,弹簧加载连接。 弹簧加载的连接能够自动调节保持环的直径,以补偿在压力影响下的复合泡沫的压缩。 然后使用第一保持环作为负载肩部安装关于钻孔提升器的VIV抑制装置。