深水钢质懒波形立管研究进展

Research progress of deepwater Steel Lazy-Wave Riser

钢质懒波形立管(Steel Lazy-Wave Riser,SLWR)作为一种新型的钢悬链线立管(Steel Catenary Riser,SCR),在国外深水油气开发中的应用越来越广泛。将SLWR与SCR进行了特点对比,通过调研SLWR在国内外海洋油气开发中的应用现状和前景,分别从动力学分析、流固耦合模拟及涡激振动(Vortex Induced Vibration,VIV)诱发疲劳分析、立管内部段塞流诱发振动3个方面论述了SLWR振动机理的研究进展。当前深水SLWR的研究难点主要包括立管内部段塞流诱发振动机理不明晰、波流流固耦合振动机理待揭示,未来应研究立管内部段塞流与立管外部波浪海流耦合作用下的振动机理、安全控制机理。研究成果可为未来中国深水SLWR技术的发展及在油气田中的应用提供参考。(表3,参39)

As a new type of Steel Catenary Riser(SCR),Steel Lazy-Wave Riser(SLWR)has been more and more widely applied in the deepwater oil and gas development.Herein,the characteristics of SLWR were compared with SCR,and the application status and prospect of SLWR in offshore oil and gas development at home and abroad were investigated.On this basis,the research progress of vibration mechanism of SLWR was demonstrated from the three aspects of dynamic analysis,simulation on fluid-structure interaction and analysis on fatigue caused by Vortex Induced Vibration(VIV),and slug flow induced vibration inside the riser.At present,the challenges of research on deepwater SLWR are that the mechanism of slug flow induced vibration inside the riser is unclear and the vibration mechanism under the fluid-structure interaction of wave current is still unrevealed.So,the mechanisms of vibration and safety control should be researched in the future under the interaction of the slug flow inside the riser and wave current outside the riser.The research results could provide reference to the future development and application of SLWR technology in oil and gas fields in China.(3 Tables,39 References)