度“柔性海底管道关键技术研究”课题技术总结报告

摘 要：海洋柔性管道是海洋油气资源开发重要的输运装备之一，它连接海底井口与海面浮体。该报告介绍了课题承担单位在2013年度的研究进展与成果，主要集中在海洋柔性立管的总体设计技术研究，包括立管截面设计技术、端部连接构件设计、防弯器设计与浮力模块设计。研究各部分设计基础、设计路线及设计方法，掌握了各部分从概念设计、材料设计再到基本设计的方法，并且针对我国南海1 500 m典型海况的Lazy-S线型应用，进行柔性立管的总体设计，并给出设计方案、设计结果与相关图纸。 对海洋柔性管道截面分析技术和端部连接构件分析技术进行研究。通过建立解析方程组研究设计参数与设计目标的关系；基于各部件在不同荷载工况下的失效模式分析，提出相关设计准则，建立三维有限元数值模型，定量分析各部件极端环境受力与疲劳寿命，评价设计安全与设计方法的有效性。并且根据该方法对目标样管设计进行定量分析，结果显示出目标样管设计满足准则要求。对海洋柔性管道制造技术进行研究，重点对内骨架层、抗压铠装层、抗拉铠装层等生产设备进行了研制改造升级，研究确定了装备制造工艺方案与生产线总承方案，形成样管的制造计划；对端部接头结构样式材料进行技术分析研究，形成图纸及制造计划。对海洋柔性管道附属构件，包括防弯器与浮力模块进行制造方案研究。根据附件的结构形式，给出相关的制造装备要求，同时根据已有附件设计方案，进行附件制造设备改造，研究确定各装备制造工艺方案与生产线总承方案，形成样品制造计划。通过研究基本掌握了海洋柔性管道与附属构件设计分析技术。

关键词：海洋柔性管道 端部接头 防弯器 浮筒 设计技术 分析技术 制造方案

Abstract：Offshore flexible pipe is one of the most important equipments for transporting oil and gas in ocean production.This report introduces the research progress and achievements from the units in 2013，which focuses on the technical research of global design of flexible risers including the cross section design，end fitting design， bend stiffener design and buoyancy module design.According to the design basis，design schedule and methodology，we hold the technology about conceptual design，material design and basic design.Focusing on the typical application of Lazy-S configuration under 1500 meters depth in the South China Sea，we finished the global design of flexible risers，and gave the design scheme，results and relative drawings.The technical research of cross section analysis and end-fitting analysis is also presented.Basing on the failure modes of every parts in different load cases，we proposed the relative design criteria，and then we developed three-dimensional numerical finite elements models. The stress under extreme environments is quantified and the fatigue life is estimated，and thus the design of flexible pipes and design technology are verified.Focusing on the goal pipe，we gave the analysis with the technology above and the results show that the design meets the criteria which means the design of flexible riser is reasonable and effective.The technology research of offshore fle xible pipe manufacturing for marine has been focusing on internal carcass layer equipment and pressure armors equipment and tensile armors equipment for the development and transformation and upgrading.Finally，we carried out the research of manufacture process program and the production line integration，consequently，gave the manufacture plan of auxiliaries.The structural style of the end fitting has been researched，and the formation of drawings and manufacturing plans has finished.The manufacture plan research of auxiliaries of flexible pipes is presented， including bend stiffeners and buoyancy modules.Based on the structure，we gave the requirements of relative manufacturing equipments.Finally，we carried out the research of manufacture process program and the production line integration，consequently，gave the manufacture plan of auxiliaries.The research plan of this program in this year was finished successfully and the design and analysis technology of flexible pipes and auxiliaries are mastered.

Key Words：Flexible riser；End fitting；Bend stiffener；Buoyancy module；Design；Analysis；Manufacture plan

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