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1. 发明授权

US06659690B1 Tapered stress joint configuration 有权
标题翻译：锥形应力接头配置
公开(公告)号：US06659690B1
公开(公告)日：2003-12-09
申请号：US09983049
申请日：2001-10-18
申请人： Parviz Abadi
发明人： Parviz Abadi
IPC分类号： F16L1304
CPC分类号： F16L25/14 , E21B17/017
摘要： A stress joint for a subsea riser has a reduced diameter intermediate section to reduce bending stresses on the connection between the stress joint and the riser as well as the subsea equipment. The stress joint having a riser joint with a threaded upper end for connection to a riser string. Attached to a lower end of the riser joint is an upper transition section that tapers from the diameter of the riser joint to a reduced diameter. An intermediate section below the upper transition section has a reduced outer diameter. A lower transition section connects the lower end of the intermediate section to the subsea equipment. The lower transition section is tapered from a reduced diameter to a larger diameter to ensure a firm connection with the subsea equipment.
摘要翻译：用于海底立管的应力接头具有减小的直径中间部分，以减小应力接头和提升管之间的连接以及海底设备的弯曲应力。应力接头具有带螺纹上端的提升管接头，用于连接到立管柱。连接到提升管接头的下端的上部过渡段从提升管接头的直径缩小到直径减小。上过渡部分下方的中间部分具有减小的外径。下部过渡部分将中间部分的下端连接到海底设备。下过渡部分从直径减小到更大的直径逐渐变细，以确保与海底设备的牢固连接。

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