共查询到20条相似文献,搜索用时 250 毫秒
1.
深水多功能水下工程作业船是一艘配置大型水下工程作业装备、集成多项水下作业功能的深水海域油气田开采配套船舶。该船集大型深水水下结构物安装、柔性管/电缆铺设、水下机器人(ROV)、锚系处理和潜水支持等多项功能于一身。该船安装以及预设作业功能布置的大型作业设备,体积庞大、额定负荷高,船体结构要承受巨大的作业载荷。同时根据深水工程作业的要求,设备的配置和船体结构布局需要综合协调优化,以满足船体结构的强度要求和深水水下工程作业的功能实现。 相似文献
2.
3.
4.
5.
介绍一种集成深水柔性管与脐带缆铺设、Reel与J-lay钢管铺设、水下结构物安装于一体的多功能立式管道铺设系统构成与设备特点。该系统可以安装在一艘中小型动力定位船舶上,其显著特点是可通过可移动式张紧器和J-lay铺管作业线的设计实现多种作业模式的快速转换,从而使船舶作业功能和灵活性大为提高,对于我国深水油气开发作业装备和多功能作业船的研究及设计建造有一定的借鉴意义。 相似文献
6.
针对长江南京以下12.5 m深水航道二期工程和畅洲标段深水、大流速工况下软体排检测、深水潜堤断面控制难题,进行多种水下检测方法的对比研究,首次将Sonic2024多波束检测技术应用于水下整治建筑物施工中软体排、深水袋装砂及水下抛石控制,通过测量得到高精度水下建筑物图像、位置和高程数据,实现了水下隐蔽工程可视化与定量化分析,起到较好的指导施工的作用。 相似文献
7.
8.
深水井场工程勘察技术探讨 总被引:1,自引:0,他引:1
本文依据我国将实施对南海深水石油资源勘探战略的重要部署,阐述了深水勘察的重要意义,并详细论述了深水勘察的内容和技术要点.深水勘察旨在为海上深水勘探、开发平台和钻井装置提供作业海区水文环境、工程物探和工程地质基础资料.根据不同的钻井装置和结构物类型,分类论述了其作业海域所应勘察的项目和必须查明的灾害性地质特征及调查方法.分析了我国当前在深水勘察设备和技术与国际水平的差距,提出了我国深水勘察的发展方向和技术要求.深水勘探,设备先行,我国作为拥有广阔深水海洋石油资源的大国,发展深水装备已经到了刻不容缓的程度.拥有深水装备和技术,将会在推进南海深水石油资源开发方面取得更大的主动权. 相似文献
9.
10.
11.
深水管中管钢悬链线立管的非线性动力分析 总被引:1,自引:0,他引:1
立管技术是深水资源开发的关键技术之一。管中管钢悬链线立管具有同心的外管与内管,其外管提供机械保护,内管提供油气通道,内、外管之间按照一定的距离安装扶正器以保护绝热材料,在深水油气开发中具有较大的应用价值。充分考虑在位立管承受的复杂载荷条件泡括动边界、波浪与海流载荷、立管自重、海水浮力、管内外静压力),以及整体和局部非线性因素(包括摩擦、滑移、接触、间隙等),采用时域有限元软件ABAQUS实现管中管钢悬链线立管的建模与非线性动力分析。 相似文献
12.
随着全球海洋石油天然气开发从浅水走向深水,由于潜水员下潜深度有限,海底油气管道的连接必须通过水下机器人代替潜水员完成此项工作。因此各种管道连接技术也越来越多地应用于海洋石油开发中。水下管道连接器作为一种重要的自动安装连接装置,涉及到机械、液压、材料、防腐、密封等各个方面,具有免潜水员操作、安装便捷、可靠性高等特点,可广泛应用于水下油气管道连接。本文对已成功应用于南海某气田中水下采气树跨接管连接的水平机械式管道连接器和水下管汇发球器连接的垂直液压式管道连接器,从密封结构、导向结构、锁紧结构的设计进行了深入的阐述,并在连接器样机型式试验、产品防腐、水下安装等方面也进行了详细的说明。 相似文献
13.
14.
《船舶与海洋工程学报》2015,(3)
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. 相似文献
15.
16.
17.
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. 相似文献
18.
19.
This paper presents a numerical study to investigate the seismic behavior of mudmat and caisson foundations supporting subsea structures, such as manifolds, in liquefiable sand. In seismic areas, substantial earthquake loads can be imparted to subsea structures during ground shaking, threatening their stability. In particular, soil liquefaction in sandy soil arising from strong ground motions could significantly influence the performance of subsea structures founded on liquefiable sand. The results of this study can provide a better understanding of the response of subsea manifolds in liquefiable soil during and after the earthquake. Three-dimensional, non-linear, dynamic analyses are performed using a finite difference scheme, and the ability of the model to reproduce the site response of a saturated sand deposit is assessed using the results of available centrifuge data. This study includes six computational models representing manifolds with different sizes and weights supported by caissons and mudmats in shallow and deep liquefiable sand subjected to moderate and strong earthquake shakings. The response is evaluated in terms of excess pore water pressure generated in the soil medium and displacements of the subsea foundation during and after the shaking. The results show that manifolds may experience considerable movement during liquefaction and post-liquefaction settlements. In addition, depending on the characteristics of the seismic motion and structural system, the manifold could also experience large tilting. 相似文献