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公开(公告)号：US09562403B2
公开(公告)日：2017-02-07
申请号：US14252592
申请日：2014-04-14
CPC分类号： E21B19/002
摘要： A top-tensioned riser system comprises a substantially vertical riser extending upward from the seafloor; a conductor surrounding an upper portion of the riser in spaced-apart relation; a coaxial keel guide surrounding a lower portion of the conductor; a tensioner attached to the conductor and the riser; a keel guide support structure attached to the keel guide and connected to the keel of a dry-tree, semi-submersible vessel; and, a keel joint centralizer attached to the riser proximate the keel guide and sized to prevent radial movement of the riser relative to the conductor. Side loads on the riser (such as those arising from displacement of the vessel from its nominal position or currents acting on the riser) are reacted from the riser to the conductor via the keel joint centralizer and then to the keel of the vessel via the keel guide.
摘要翻译： 顶部张紧的立管系统包括从海底向上延伸的基本垂直的提升管; 围绕提升管的上部的间隔开的关系的导体; 围绕导体的下部的同轴龙骨引导件; 连接到导体和立管的张紧器; 龙骨引导支撑结构，其附接到龙骨引导件并连接到干树半潜式船舶的龙骨; 以及靠近龙骨引导件附接到提升管的龙骨关节扶正器，其大小适于防止提升管相对于导体的径向移动。 提升管上的侧向负载（例如由容器从其标称位置或作用在提升管上的电流引起的负载）通过龙骨接头集中器从提升管与导体反应，然后通过龙骨反应到容器的龙骨 指南。
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公开(公告)号：US20140305655A1
公开(公告)日：2014-10-16
申请号：US14252592
申请日：2014-04-14
IPC分类号： E21B41/00
CPC分类号： E21B19/002
摘要： A top-tensioned riser system comprises a substantially vertical riser extending upward from the seafloor; a conductor surrounding an upper portion of the riser in spaced-apart relation; a coaxial keel guide surrounding a lower portion of the conductor; a tensioner attached to the conductor and the riser; a keel guide support structure attached to the keel guide and connected to the keel of a dry-tree, semi-submersible vessel; and, a keel joint centralizer attached to the riser proximate the keel guide and sized to prevent radial movement of the riser relative to the conductor. Side loads on the riser (such as those arising from displacement of the vessel from its nominal position or currents acting on the riser) are reacted from the riser to the conductor via the keel joint centralizer and thence to the keel of the vessel via the keel guide.
摘要翻译： 顶部张紧的立管系统包括从海底向上延伸的基本垂直的提升管; 围绕提升管的上部的间隔开的关系的导体; 围绕导体的下部的同轴龙骨引导件; 连接到导体和立管的张紧器; 龙骨引导支撑结构，其附接到龙骨引导件并连接到干树半潜式船舶的龙骨; 以及靠近龙骨引导件附接到提升管的龙骨关节扶正器，其大小适于防止提升管相对于导体的径向移动。 提升管上的侧向负载（例如由容器从其标称位置或作用在提升管上的电流引起的负载）通过龙骨接头中心器从上升管引导到导体，然后通过龙骨反应到容器的龙骨 指南。
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3.发明申请公开(公告)号：US20170159377A1
公开(公告)日：2017-06-08
申请号：US14958140
申请日：2015-12-03
发明人： Amir Salem , Thomas Prichard
CPC分类号： E21B19/004 , E21B17/01 , E21B17/085
摘要： A removable riser hang-off connector is equipped with a flexible element that, in one embodiment, comprises rubber-encapsulated steel plates. The connector is designed for attachment to a hang-off collar provided on a steel catenary riser below the tapered stress joint or flex joint. Connection of the removable riser hang-off connector may be made by an ROV. With the removable riser hang-off connector attached, the tapered stress joint and/or flex joint may be raised out of the water (for inspection, maintenance, repair or replacement) by lifting the upper end of the SCR out of its porch receptacle with a chain jack (or other lifting device) and inserting the removable riser hang-off connector into the porch receptacle. This temporarily supports the SCR in an elevated state with the tapered stress joint and/or flex joint above the surface of the water.
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