通过舷侧安装管道终端(pipeline end terminal,PLET)是PLET安装的方法之一。本文对安装过程进行研究并建立了有限元时域分析模型。使用该模型对管道系统的悬挂状态和下放过程进行分析。悬挂状态的静力敏感性分析表明,管道处理系统(pipel...通过舷侧安装管道终端(pipeline end terminal,PLET)是PLET安装的方法之一。本文对安装过程进行研究并建立了有限元时域分析模型。使用该模型对管道系统的悬挂状态和下放过程进行分析。悬挂状态的静力敏感性分析表明,管道处理系统(pipeline handling system PHS)倾角和PLET结构特性对管顶强度影响较大;在PLET的入水过程中,船舶运动尤其是横摇,是影响管道强度的主要因素;当PLET接近海床时,其运动可能导致管道出现轴向受压现象。展开更多
基于南海陵水17-2深水油气田开发,针对J形首端海底管道终端(Pipeline End Termination,PLET)安装,采用OrcaFlex软件开展数值模拟,研究波流载荷对安装系统的影响,以得到其作业窗口,并分析J形首端PLET安装过程中作业窗口的影响因素。结果...基于南海陵水17-2深水油气田开发,针对J形首端海底管道终端(Pipeline End Termination,PLET)安装,采用OrcaFlex软件开展数值模拟,研究波流载荷对安装系统的影响,以得到其作业窗口,并分析J形首端PLET安装过程中作业窗口的影响因素。结果表明,PLET在飞溅区和预着陆阶段比较危险,波浪周期约10 s波流同向横浪是安装作业的控制工况。研究内容为南海陵水17-2海底管道J形首端PLET安装提供了重要的技术支持。展开更多
为便于深水双层整体式管道终端(Pipeline End Termination,PLET)的安装设计,以海洋石油201船的舷侧下放装置和南海某项目为基础,研究双层整体式PLET舷侧安装的悬挂和下放两个关键阶段的安装分析模型和主要参数。对比悬挂分析等效单层管...为便于深水双层整体式管道终端(Pipeline End Termination,PLET)的安装设计,以海洋石油201船的舷侧下放装置和南海某项目为基础,研究双层整体式PLET舷侧安装的悬挂和下放两个关键阶段的安装分析模型和主要参数。对比悬挂分析等效单层管模型与双层管模型,结果表明此2种建模方法均适用。双层管模型相关接触参数(接触刚度、接触面积、锚固件位置)对海底管道受力影响较小且能输出内外管接触载荷,较适用于安装设计。在下放过程中,管道载荷对PLET的重心位置和附加质量水动力系数较为敏感,在安装设计中需关注。展开更多
Thesubsea dynamic riser base （SDRB） is an important piece of equipment for the floating production platform mooring system.One end is connected to the rigid pipeline, carrying a rigid pipeline thermal expansion load...Thesubsea dynamic riser base （SDRB） is an important piece of equipment for the floating production platform mooring system.One end is connected to the rigid pipeline, carrying a rigid pipeline thermal expansion load and the other end is connected to a flexible riser, carrying the dynamic load of the flexible riser, so its function is a transition connection between the flexible riser and the rigid pipeline which fixes the flexible riser on the seabed. On the other hand. as a typical subsea product, the design will satisfythe requirements of the standards for subsea products. By studying the stress analysisphilosophy of the topside piping and subsea pipeline, a physical model and procedure for piping stress analysis of the SDRB have been established.The conditions of the adverse design load have been considered, and a combination of the static load from the rigid pipeline and the dynamic load flexibility has also been optimized. And a comparative analysis between the AMSE, DNV and API standards for piping stress with the checking rules has been done.Because theSDRB belongs to the subsea pipeline terminal product, the use of DNV standards to check its process piping stress is recommended. Finally, the process piping stress of the SDRB has been calculated, and the results show that the jacket pipe and the carrier pipe stress of the SDRB process piping satisfy the DNV standards as a whole.The bulkhead cannot be accurately simulated by the AutoPIPE software which uses the FEA software ANSYS inthe detailed analysis, but the checking results will still meet the requirements of the DNV standards.展开更多
文摘通过舷侧安装管道终端(pipeline end terminal,PLET)是PLET安装的方法之一。本文对安装过程进行研究并建立了有限元时域分析模型。使用该模型对管道系统的悬挂状态和下放过程进行分析。悬挂状态的静力敏感性分析表明,管道处理系统(pipeline handling system PHS)倾角和PLET结构特性对管顶强度影响较大;在PLET的入水过程中,船舶运动尤其是横摇,是影响管道强度的主要因素;当PLET接近海床时,其运动可能导致管道出现轴向受压现象。
文摘基于南海陵水17-2深水油气田开发,针对J形首端海底管道终端(Pipeline End Termination,PLET)安装,采用OrcaFlex软件开展数值模拟,研究波流载荷对安装系统的影响,以得到其作业窗口,并分析J形首端PLET安装过程中作业窗口的影响因素。结果表明,PLET在飞溅区和预着陆阶段比较危险,波浪周期约10 s波流同向横浪是安装作业的控制工况。研究内容为南海陵水17-2海底管道J形首端PLET安装提供了重要的技术支持。
文摘为便于深水双层整体式管道终端(Pipeline End Termination,PLET)的安装设计,以海洋石油201船的舷侧下放装置和南海某项目为基础,研究双层整体式PLET舷侧安装的悬挂和下放两个关键阶段的安装分析模型和主要参数。对比悬挂分析等效单层管模型与双层管模型,结果表明此2种建模方法均适用。双层管模型相关接触参数(接触刚度、接触面积、锚固件位置)对海底管道受力影响较小且能输出内外管接触载荷,较适用于安装设计。在下放过程中,管道载荷对PLET的重心位置和附加质量水动力系数较为敏感,在安装设计中需关注。
基金financially supported by Offshore Engineering Equipment Scientific Research Project--Topic on Subsea Production System DesignKey Equipment Research & Development from Ministry of Industry and Information Technology of the People's Republic of China E-0813C003
文摘Thesubsea dynamic riser base （SDRB） is an important piece of equipment for the floating production platform mooring system.One end is connected to the rigid pipeline, carrying a rigid pipeline thermal expansion load and the other end is connected to a flexible riser, carrying the dynamic load of the flexible riser, so its function is a transition connection between the flexible riser and the rigid pipeline which fixes the flexible riser on the seabed. On the other hand. as a typical subsea product, the design will satisfythe requirements of the standards for subsea products. By studying the stress analysisphilosophy of the topside piping and subsea pipeline, a physical model and procedure for piping stress analysis of the SDRB have been established.The conditions of the adverse design load have been considered, and a combination of the static load from the rigid pipeline and the dynamic load flexibility has also been optimized. And a comparative analysis between the AMSE, DNV and API standards for piping stress with the checking rules has been done.Because theSDRB belongs to the subsea pipeline terminal product, the use of DNV standards to check its process piping stress is recommended. Finally, the process piping stress of the SDRB has been calculated, and the results show that the jacket pipe and the carrier pipe stress of the SDRB process piping satisfy the DNV standards as a whole.The bulkhead cannot be accurately simulated by the AutoPIPE software which uses the FEA software ANSYS inthe detailed analysis, but the checking results will still meet the requirements of the DNV standards.
