海洋工程装备与技术 ›› 2014, Vol. 1 ›› Issue (1): 35-41.

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非粘接动态柔性立管干涉研究

周巍伟, 沙勇, 曹静   

  1. 中海油研究总院, 北京 100027
  • 收稿日期:2014-02-21 出版日期:2014-01-30 发布日期:2017-12-07
  • 作者简介:

    周巍伟(1985--), 男, 硕士, 主要从事深水海底管道与立管工程技术方面的研究.

  • 基金资助:
    国家科技重大专项(2011ZX05026-005)

Study on Interference of the Dynamic Unbonded Flexible Riser

Wei-wei ZHOU, Yong SHA, Jing CAO   

  1. CNOOC Research Institute, Beijing 100027, China
  • Received:2014-02-21 Online:2014-01-30 Published:2017-12-07

摘要:

非粘接动态柔性立管是深水海洋石油开发的重要设备, 具备安装简便,可靠性高,抗疲劳性能强等诸多优点.非粘接动态柔性立管由多层非粘结结构形式缠绕而成, 其截面刚度较低, 在波浪和海流作用下运动幅值较大, 因此柔性立管的构型和布置需要特殊研究, 以免在极端情况下发生立管之间,立管与锚链之间的碰撞干涉.针对应用于中国南海海域的柔性立管, 基于有限元法, 采用Huse尾涡模型开展了干涉研究, 并就柔性立管弯曲刚度,内部介质和拖曳力系数对干涉间距的敏感性做了分析, 得到了对海洋立管工程有参考意义的结论.

关键词: 柔性立管, 干涉分析, 拖曳力系数, Huse尾涡模型

Abstract:

The dynamic unbonded flexible riser which is the key equipment in the offshore petroleum industry owns some advantages such as easy installation, high reliability and high anti-fatigue property. The dynamic unbonded flexible riser is manufactured by twining with polymer layers and steel tape layers. The section stiffness of flexible riser is in the relative low level compared with soild steel pipe, and it is easy to move when facing to the current, so the flexible riser configuration must be specially designed to avoid the interaction between the risers and mooring lines. We use the Huse wake model and finite element method (FEM) to analyze the flexible riser and mooring line in the South China Sea environment, meanwhile perform the sensitivity analyses of riser section stiffness, pipe flow density and drag coefficient. Finally, some engneering meaningful conclusions are given.

Key words: flexible riser, interaction analysis, drag coefficient, Huse wake model

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