Recently, the spar platform concept develops quickly in the offshore oil and gas exploitations, especially in deep and ultra-deep water, owing to its benign motion performance, excellent stability and adaptation to wi...Recently, the spar platform concept develops quickly in the offshore oil and gas exploitations, especially in deep and ultra-deep water, owing to its benign motion performance, excellent stability and adaptation to wide range of water depth. Many new spar concepts have been put forward with the purpose of reducing fabrication difficulty and cost, while meeting the requirements of exploitation in the meantime Based on the aims mentioned above, a new spar concept was presented in this article and its hydrodynamics both in operating and survival conditions was studied by means of numerical simulation. Basic model tests were also conducted to calibrate the numerical approach. Following aspects are highlighted： （1） new spar concept, （2） global performance of the spar concept and （3） mooring line analysis.展开更多
针对一种新型的深水立柱式Spar钻井生产储卸油平台（spar drilling production storage offloading，简称SDPSO）的特点，对其进行系泊系统方案研究；按照南海1500m设计水深，给出两种系泊系统方案，并进行了数值模拟计算；结果表明：...针对一种新型的深水立柱式Spar钻井生产储卸油平台（spar drilling production storage offloading，简称SDPSO）的特点，对其进行系泊系统方案研究；按照南海1500m设计水深，给出两种系泊系统方案，并进行了数值模拟计算；结果表明：在百年一遇的台风环境条件下，所设计的两种系泊系统均能满足要求；其中，钢链．尼龙缆．钢链系泊缆的系泊系统有更好的性能。同时，对SDPSO平台在340m水深的适应性进行了研究，并针对其特点及立管设计要求，对系泊系统进行了设计研究及进行了数值计算。研究结果表明：该平台水深适应性良好，系泊系统最大张力及平台总体运动均能满足设计要求。展开更多
The coupled hull, mooring and riser analysis techniques in time domain are widely recognized as the unique approach to predict the accurate global motions. However, these complex issues have not been perfectly solved ...The coupled hull, mooring and riser analysis techniques in time domain are widely recognized as the unique approach to predict the accurate global motions. However, these complex issues have not been perfectly solved due to a large number of nonlinear factors, e.g. forces nonlinearity, mooring nonlinearity, motion nonlinearity and so on. This paper investigates the coupled effects through the numerical uncoupled model, mooring coupled model and fully coupled model accounting mooring and risers based on a novel deep draft multi-spar which is especially designed for deepwater in 2009. The numerical static-offset, free-decay, wind-action tests are executed, and finally three hours simulations are conducted under 100-year return period of GOM conditions involving wave, wind and current actions. The damping contributions, response characteristics and mooring line tensions are emphatically studied.展开更多
基金the Major Fundamental Research Program of Science and Technology Commission of Shanghai Municipality (Grant No. 05DJ14001)the National High Technology Research and Development Program of China (863 Program, Grant No. 2006AA09A107).
文摘Recently, the spar platform concept develops quickly in the offshore oil and gas exploitations, especially in deep and ultra-deep water, owing to its benign motion performance, excellent stability and adaptation to wide range of water depth. Many new spar concepts have been put forward with the purpose of reducing fabrication difficulty and cost, while meeting the requirements of exploitation in the meantime Based on the aims mentioned above, a new spar concept was presented in this article and its hydrodynamics both in operating and survival conditions was studied by means of numerical simulation. Basic model tests were also conducted to calibrate the numerical approach. Following aspects are highlighted： （1） new spar concept, （2） global performance of the spar concept and （3） mooring line analysis.
文摘针对一种新型的深水立柱式Spar钻井生产储卸油平台（spar drilling production storage offloading，简称SDPSO）的特点，对其进行系泊系统方案研究；按照南海1500m设计水深，给出两种系泊系统方案，并进行了数值模拟计算；结果表明：在百年一遇的台风环境条件下，所设计的两种系泊系统均能满足要求；其中，钢链．尼龙缆．钢链系泊缆的系泊系统有更好的性能。同时，对SDPSO平台在340m水深的适应性进行了研究，并针对其特点及立管设计要求，对系泊系统进行了设计研究及进行了数值计算。研究结果表明：该平台水深适应性良好，系泊系统最大张力及平台总体运动均能满足设计要求。
基金supported by the National High Technology Research and Development Program of China(863 Program,Grant Nos.2006AA09A103 and 2006AA09A104)
文摘The coupled hull, mooring and riser analysis techniques in time domain are widely recognized as the unique approach to predict the accurate global motions. However, these complex issues have not been perfectly solved due to a large number of nonlinear factors, e.g. forces nonlinearity, mooring nonlinearity, motion nonlinearity and so on. This paper investigates the coupled effects through the numerical uncoupled model, mooring coupled model and fully coupled model accounting mooring and risers based on a novel deep draft multi-spar which is especially designed for deepwater in 2009. The numerical static-offset, free-decay, wind-action tests are executed, and finally three hours simulations are conducted under 100-year return period of GOM conditions involving wave, wind and current actions. The damping contributions, response characteristics and mooring line tensions are emphatically studied.
