Full scale measurement for FPSO on motions in six-degrees of freedom and environmental loads and deduction of mooring system loads

Hu, Zhiqiang; Yang, Jie; Zhao, Yao; Bai, Gang

doi:10.1007/s11433-010-4200-1

Cited by 17 publications

(5 citation statements)

References 6 publications

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“…Wind speed and direction measuring instruments. Hu et al (2011) used the Nanhai Endeavour FPSO to conduct motion measurements for up to two years and summarized the six degrees of freedom motion characteristics of the FPSO under short-term typhoons. Du et al (2017) carried out an analysis of the characteristics of the strong wind field during typhoons in the South China Sea, which provided important reference materials for wind resistance studies in the South China Sea.…”

Section: Marine Environmental Monitoring Technologymentioning

confidence: 99%

An Overview of Structural Design, Analysis and Common Monitoring Technologies for Floating Platform and Flexible Cable and Riser

Zhao

Gou

et al. 2022

China Ocean Eng

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Offshore oil and gas development plays an important part in the global energy sector. Offshore platforms and flexible pipes are the key equipments in the whole offshore oil and gas development system. Because of the randomness and uncertainty of wave and current loads in the ocean environment, the structural design and mechanical analysis of the marine equipment can be highly complicated. Therefore, this paper reviews the recent works of the theoretical model, numerical simulation, and experimental test in three research areas: hydrodynamic analysis of offshore platforms, structural mechanics analysis of flexible pipe and cable, and monitoring technology of offshore floating structures under marine loads. By analyzing their main research methods and key technical difficulties, this paper provides theoretical basis and technical support for the reliability engineering application of offshore platforms and flexible pipelines. Also, China is relatively backward in the design of marine floating platform, the design, analysis and testing of flexible pipeline and cable, as well as the marine equipment prototype monitoring technology research. Calling for breakthroughs at the earliest possible stage in the above fields, prime research should be focused on and strategic planning should be made to deal with “key areas and stranglehold problems”. It is of great significance for the development of China’s deep-sea energy and resource development of independent technology and on time to achieve the “carbon peak” national strategic objectives.

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Section: Marine Environmental Monitoring Technologymentioning

confidence: 99%

An Overview of Structural Design, Analysis and Common Monitoring Technologies for Floating Platform and Flexible Cable and Riser

Zhao

Gou

et al. 2022

China Ocean Eng

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“…The prototype monitoring method for investigating the operation conditions of mooring line has been presented as an important method in the study of deep water mooring systems [5,6,7,8]. As the main straightforward measurement method used today, possessing low cost and good measuring accuracy, the top tension measurement of mooring lines by utilizing load cell sensors has been widely used in existing mooring systems [9,10,11].…”

Section: Introductionmentioning

confidence: 99%

Development and Sensing Properties Study of Underwater Assembled Water Depth-Inclination Sensors for a Multi-Component Mooring System, Using a Self-Contained Technique

Jiang

Xie

et al. 2016

Sensors

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Prototype monitoring techniques play an important role in the safety guarantee of mooring systems in marine engineering. In general, the complexities of harsh ocean environmental conditions bring difficulties to the traditional monitoring methods of application, implementation and maintenance. Large amounts of existing mooring systems still lack valid monitoring strategies. In this paper, an underwater monitoring method which may be used to achieve the mechanical responses of a multi-point catenary mooring system, is present. A novel self-contained assembled water depth-inclination (D-I) sensor is designed and manufactured. Several advanced technologies, such as standalone, low power consumption and synchronism, are considered to satisfy the long-term implementation requirements with low cost during the design process. The design scheme of the water resistance barrel and installation clamp, which satisfies the diver installation, are also provided in the paper. An on-site test has previously been carried out on a production semisubmersible platform in the South China Sea. The prototype data analyses, including the D-I value in the time domain (including the data recorded during the mooring retraction and release process) and spectral characteristics, are presented to reveal the accuracy, feasibility and stability of the sensor in terms of fitting for the prototype monitoring of catenary mooring systems, especially for in-service aging platforms.

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“…Prototype measurement for investigating operation conditions of mooring line has emerged as an important method in the study of deep-water mooring systems. [10][11][12][13][14][15] Several measurement techniques and sensors have been developed to detect mooring lines. Monitoring the tension at the top of mooring lines using load cell is the most straight-forward measurement method.…”

Section: Introductionmentioning

confidence: 99%

A novel underwater measurement method for mooring system using self-contained technique

Tang

et al. 2015

Advances in Mechanical Engineering

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This article introduces a prototype measurement method for investigating deep-water mooring systems. Measurement information and specifications are determined according to mooring system analysis. Mooring line information is difficult to measure underwater, particularly for aging platforms. To solve this problem, a novel mooring line tension measurement strategy based on lumped mass method is proposed. A type of self-contained sensor is designed and manufactured to realize dynamic response measurement of mooring systems underwater. The sensor is described in detail, including its design requirement, hardware design, and installation mode. A comprehensive field test system was constructed on a semi-submersible platform in South China Sea. Prototype data, including the data measured during typhoons, are introduced and discussed to improve the accuracy, feasibility, and stability of the proposed measurement method.

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Full scale measurement for FPSO on motions in six-degrees of freedom and environmental loads and deduction of mooring system loads

Cited by 17 publications

References 6 publications

An Overview of Structural Design, Analysis and Common Monitoring Technologies for Floating Platform and Flexible Cable and Riser

An Overview of Structural Design, Analysis and Common Monitoring Technologies for Floating Platform and Flexible Cable and Riser

Development and Sensing Properties Study of Underwater Assembled Water Depth-Inclination Sensors for a Multi-Component Mooring System, Using a Self-Contained Technique

A novel underwater measurement method for mooring system using self-contained technique

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