大型深水导管架封隔器安装工艺

近些年来,在我国经济的不断推动下,海洋工程得到了飞速的发展,海洋深水项目不断增大,对于导管架的需求量也在不断的增大。其中,深水导管架封隔器作为导管架的重要附件之一,其安装工艺和水平对于与导管架在海洋工程中的应用水平有着直接的关系。因此,本文针对深水导管架封隔器的应用范围及其安装工艺进行分析和探讨,希望能够为今后我国海洋工程中的大型导管架的应用和安装提供参考,也为今后我国海洋工程的进一步发展提供助力。     

导管架下水驳船的“浮托法”安装改造研究

导管架下水驳船是实施大型深水导管架下水的必要装备。“浮托法”安装模式是大型平台组块海上安装的发展趋势。对“海洋石油229”号导管架下水驳船“浮托法”安装改造前、后的总体性能进行了对比分析。     

万吨级下水驳船

对于大型深水导管架的海上安装，当其吊重超过现有浮吊起重能力时，采用导管架从驳船上滑移下水是一种提高浮吊利用率、通常也是唯一可行的导管架安装方法，承担这种作业的驳船必须是具有特殊装备和功能的下水驳船。     

深水导管架滑移下水的安装分析技术和设计方法

导管架滑移下水是安装重型导管架的一种常见的方式,20世纪70年代初国外已开始在海上实施导管架的滑移下水,80年代初,有关导管架滑移下水的数值模拟分析和安装技术已趋于成熟.随着我国对海上深水油田的进一步开发,吸收国外的先进经验,掌握这方面的分析技术并应用于我国深水开发工程上的需要尤为紧迫.在参阅OTC论文、国外的相关出版物和规范的基础上,对导管架滑移下水过程的分析方法和设计方法进行了论述,并结合一个工程算例加以分析,算例中使用的软件为MOSES.     

深水导管架上部模块浮托安装过程疲劳分析

深水导管架在海上浮托施工设计中存在高撞击力,撞击力幅值过大会使某些关键杆件产生超应力,导致局部节点产生低周疲劳,给导管架的使用寿命带来不利影响。对此,介绍深水导管架浮托法安装过程中的疲劳损伤计算方法,涉及边界条件的处理和拖船、上部模块及导管架之间载荷传递的模拟,结构响应计算,节点疲劳估算等。应用不同的S-N曲线,分别考虑高周和低周疲劳,计算某导管架上部模块在安装组对阶段其桩腿与上部模块对接位置的疲劳损伤。对计算结果显示的薄弱位置进行加强,从而为浮托安装作业提供技术指导和安全保障。     

封隔器在PY30-1项目中的应用

介绍番禺/惠州油气田项目PY30-1导管架上封隔器的车间组装、测试,现场安装及调试过程.为今后其他大型深水导管架项目的封隔器组装安装及调试提供参考.     

深水导管架的运输分析

大型导管架随着国内深水油气田的开发被逐步地采用。导管架拖航由站立运输方式转变为平躺运输方式，运输工况制约水平层桁架的布置和杆件的选取，导管架的重量和尺度对驳船的选择也具有较高的要求。介绍了深水导管架拖航的分析方法和原理，对影响稳性、运动、结构等敏感性参数做了进一步探讨。     

大型导管架的装船分析

装船工况是桩基式平台导管架安装分析的重要组成部分,随着桩基式平台水深增加和结构形式的复杂化,拖拉装船过程对主结构的部分构件成为主控工况,设计理念也在不断扩展.结合近年来若干工程项目的实际事例和摸索出的实践经验,针对深水导管架工程,对不同结构形式下分析方法进行了阐述,旨在拓宽设计思路,满足深水工程不断发展中的新要求,解决设计中的难点.     

海上风电导管架基础关键参数敏感性分析

随着海上风电建设逐步向深水化、大型化方向发展，导管架基础将越来越受到行业的关注。文章以导管架桩头的受力情况作为评价标准，对导管架的结构进行参数敏感性分析。选择导管架弦杆斜度、层高、平台跨距3个参数为关键设计变量，探究了各变量在给定范围变化时，对桩头受力的影响，并对比了三者的影响程度，证实导管架弦杆斜度对桩头受力影响最大，平台跨距次之，层高最低，由此给出了导管架尺寸优化设计建议。     

文昌14-3深水导管架的建造

海洋石油工程的发展是国家海洋事业的重要组成部分，而海洋工程中的平台制造是海上油气田开发的基础和保证。而随着现在工程越来越向深海区域发展，建造深水导管架必然将成为未来海洋工程发展的主流。以文昌14-3WHPA深水导管架的建造为例，介绍深水导管架在海洋工程中的建造过程、应用的新技术以及技术难点。     

Installation strength analysis of subsea flowline jumpers

Subsea flowline jumper (FJ) is basic connection component for the wet oil tree, the subsea pipeline and the riser base, playing an irreplaceable role in the subsea production system. During the installation of FJ, collisions often happen between FJ and other equipment, which may cause serious damage. Besides, as the operating water depth increases, the demand for the installation equipments like the crane and winch will increase. The research of deepwater FJ installation in China is still in the primary stage, so an installation method for deepwater FJ is proposed in this paper. Finite element models of a typical M-shape FJ installation system were built to simulate the installation procedures. Analysis results showed that the installation steps designed for the FJ are feasible and valid for deepwater FJ. In order to ensure the safety of the installation process, the collision-sensitive analysis for the FJ was conducted, and results show that it is necessary to set the pick up speed at a proper value, in order to avoid collision in installation process. Besides, the mechanical characteristics of FJ during the installation were investigated under a range of environmental conditions and it was found that the maximum stress of the FJ always happens at its central position. The basic requirements for the installation equipment were also obtained through the analysis of the main installation steps.     

海底跨接管安装强度分析（英文）

A subsea flowline jumper(FJ) is a basic connected component for the wet oil tree, subsea pipeline and riser base, and it plays an irreplaceable role in the subsea production system. During the installation of FJ, collisions often happen between FJ and other equipment, which may cause serious damage. Besides, as the operating water depth increases, the demand for the installation equipments, such as the crane and winch, will increase. The research of deepwater FJ installation in China is still in the primary stage, thus an installation method for the deepwater FJ is proposed in this paper. Finite element models of a typical M-shaped FJ installation system are built to simulate the installation procedures. Analysis results show that the installation steps designed are feasible and valid for the deepwater FJ. In order to ensure the safety of the installation process, the collision-sensitive analysis for the FJ is conducted, and results show that it is necessary to set the pick up speed at a proper value, in order to avoid collision in the installation process. Besides, the mechanical characteristics of FJ during the installation are investigated under a range of environmental conditions and it is found that the maximum stress of the FJ always happens at its central position. The basic requirements for the installation equipment are also obtained through the analysis of the main installation steps.     

深海半潜式生产平台张紧式系泊系统安装方案

深海半潜式生产平台通常采用永久张紧式系泊系统,通过搜集整理行业内深水张紧式系泊安装流程的相关资料,对系泊系统海上安装方案进行归纳和总结,详细阐述吸力锚及系泊缆的安装作业流程,并针对海上意外事件出现而采取的相应措施进行说明,为今后深水张紧式系泊系统的海上安装提供参考。     

浅水裙桩导管架的安装工艺

文章以蓬莱19-3单点导管架的海上安装工艺为例介绍了渤海裙桩导管架的海上安装过程,提出了使用“钢桩脚鞋”起长重桩,用脚手架管做插桩导向引导插桩,用送桩辅助打裙桩,用圆管观测打桩刻度等一系列实践性极强的安装方法,对于今后在渤海湾或其它浅水区域安装类似的导管架有借鉴意义.     

脐带缆深水安装的参数影响分析(英文)

随着水深的增加引起外部压力的增大和脐带缆的重量相应增加,且由于海洋环境载荷和浮体的运动引起复杂的动力特性使得脐带缆的受力复杂,其安全性受到很大的挑战,故深水安装是脐带缆的关键问题之一。文章详细分析了安装过程中不同浮力块的布置方式(不同尺寸,长度和布置位置)和波浪与流的方向对脐带缆的影响。利用悬链线方程构建自由悬挂的脐带缆的模型,然后施加浮力与环境载荷得到动态脐带缆的安装模型。通过对比分析表明,浮力块的布置方案和波浪与流的方向对脐带缆的安装都有很大的影响,上述这些参数在安装中需要给予重视。     

安装螺旋桨用液压油顶结构的改进

文章分析了安装螺旋桨用U形液压油顶漏油的原因,针对漏油原因提出改进办法,成功设计出T形液压油顶,有效地解决了安装螺旋桨用液压油顶漏油的问题。     

浅水导管架拒锤后的安装工艺

以蓬莱19．3项目WHP—E导管架的安装作为例,描述了浅水导管架在拒锤后的安装所需装备、关键技术和主要工艺过程,为后续浅水导管架在出现拒锤后而采取相关的措施提供了借鉴。     

先进深水S型铺管船及其深海开发应用前景分析

铺管船作为管道铺设的重要海洋工程装备,其性能是深海铺管的关键。针对当前国内外深海铺管船发展,从铺管方式和船体性能两方面进行了分析归纳,对深海管道S型铺设的特点及关键设备进行了分析,讨论了S型铺管船在深海应用的发展趋势。     

Mathematical model of steel lazy-wave riser abandonment and recovery in deepwater

To meet the increasing applications of the deepwater steel lazy-wave riser (SLWR), the riser abandonment and recovery (A&R) is a great challenge for SLWR installation and its mechanical analysis is necessary and significant. This paper is focused on the abandonment and recovery process which is of great importance to the installation feasibility and analysis. A comprehensive mechanical model based on the nonlinear large deformation beam theory for simulating the deepwater SLWR is proposed. And a simple and suitable model for analyzing the A&R cable is developed. The presented model with detailed boundary conditions is able to deal with three different A&R methods. Numerical analysis is conducted by the finite difference method to investigate the riser configurations and somev important mechanical parameters of the pipeline and cable which exert influences on the riser's performance and the A&R cable's requirement. Parametric comparison study is conducted to analyze the advantage of different method. The proposed model can help on development of deepwater SLWR A&R design and analysis.