Interference Analysis of Top Tensioned Risers for Tension Leg Platform under Wave and Current

Abstract

Abstract:

Tension leg platform (TLP) has been widely used in deepwater oil field development in recent years. The risk of top tensioned riser (TTR) interference increases with the increase of water depth. If the collision force or collision energy caused by riser interference is large enough, it is possible to endanger the integrity of riser systems, and even the safety of the platform. TTR interference assessment becomes increasingly important and a design challenge for deepwater TLP. Reasonable well-bay spacing should be selected to avoid TTR collision and also minimize the impact on TLP topsides. Based on an oil field development plan, well-bay spacing and riser interference are investigated. The key parameters such as drag coefficient and top tension factor are discussed, and sensitivity analysis is carried out on those factors. The results may provide references for the research and design of TTRs.

Key words:tension leg platform,top tensioned riser,interference,sensitivity analysis

CLC Number:

TP951

Yun SHI, Xiao-dong ZHOU, Jing CAO, Xiao-yan LIU. Interference Analysis of Top Tensioned Risers for Tension Leg Platform under Wave and Current[J]. Ocean Engineering Equipment and Technology, 2015, 2(2): 84-87.

Figures/Tables7

Fig.1

参数	外径/mm	壁厚/mm
生产立管	273.05	11.43
生产油管	114.30	7.70
钻井立管	394.00	19.00

Table 1

上游立管	下游立管	环境条件	立管净间隙Δ/m
生产立管-正常操作	钻井立管	百年台风	0.962
生产立管-正常操作	钻井立管	一年季风+内波	1.411
钻井立管	生产立管-正常操作	百年台风	1.907
钻井立管	生产立管-正常操作	一年季风+内波	2.237

Table 2

上游立管	下游立管	环境条件	立管净间隙Δ/m
生产立管-正常操作	生产立管-正常操作	百年台风	1.678
生产立管-正常操作	生产立管-正常操作	一年季风+内波	1.953

Table 3

上游立管	下游立管	环境条件	立管净间隙Δ/m
生产立管-完井/修井工况	生产立管-正常操作	百年台风	2.423
生产立管-完井/修井工况	生产立管-正常操作	一年季风+内波	2.516
生产立管-正常操作	生产立管-完井/修井工况	百年台风	1.412
生产立管-正常操作	生产立管-完井/修井工况	一年季风+内波	1.922

Table 4

Fig.2

Fig.3

[1]	中海石油研究中心.深水立管选型报告[R].2011.
[2]	马强,田荣涛.深水立管之间的碰撞过程数值仿真[J].中国工程机械学报,2007,5(2):177.
[3]	Det Norste Veritas.DNV-RP-F203. Riser interference[S]. 2009.
[4]	Orcina Ltd.OrcaFlex manual version 9.5a[M]. Daltongate: Orcina Ltd., 2012.
[5]	Huse E.Experimental investigation of deep sea riser interaction[C]. OTC, 1996: 8070.
[6]	American Petroleum Institute.API RP 2RD. Design of risers for floating production systems (FPSs) and tension-leg platforms (TLPs)[S]. 2006.
[7]	Koska R, Kaculi J, Campbell M, et al.Minimizing interference between top tension risers for tension leg platforms[C]. OMAE, 2013: 11182.

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