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Safety Management of Work at Height in Offshore Engineering Manufacturing Industry LUO Mengran, WANG Qinggong, YU Minggan Ocean Engineering Equipment and Technology    2025, 12 (3): 79-86.   DOI: 10.12087/oeet.2095-7297.2025.03.10 Abstract （699）      PDF（pc） （9952KB）（153）       Knowledge map    Save Due to the specific manufacturing processes in offshore engineering， work at height is highly prevalent， particularly during the assembly phases of large structures such as modules and jackets， where the frequency of work at height and multi-level crossover operations， as well as the potential fall height， are continuously increasing. This paper provides a classified review of current domestic and international research on work-at-height safety. It systematically examines the definition and identification criteria of work at height and proposes comprehensive preventive measures based on domestic and international regulatory standards and engineering practices. These measures encompass multiple aspects， including engineering technology， management， personnel， and physical protection. To ensure the inherent safety of scaffolding， the paper discusses different types of scaffolding and their selection during construction， aiming to provide a safety management framework for work at height in the offshore engineering manufacturing industry. This framework is designed to effectively reduce accident rates and ensure operational safety. Related Articles | Metrics | Comments（0）

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Review on the Development and Research on Magnetic Flux Leakage Detection Technology LI Bailin Ocean Engineering Equipment and Technology    2025, 12 (2): 179-182.   DOI: 10.12087/oeet.2095-7297.2025.02.37 Abstract （526）      PDF（pc） （1490KB）（352）       Knowledge map    Save Magnetic flux leakage (MFL) detection technology， renowned for its high reliability and non-contact detection capabilities， is widely applied in safety detections of petrochemical storage tanks and pipelines. Firstly， the theoretical development and technical principles of MFL detection are introduced. Then， the research status of defect identification， quantitative analysis， and inversion methodologies in MFL technology are explained in detail. Finally， a summary is provided， highlighting the challenges faced by current artificial intelligent methods in this field. Related Articles | Metrics | Comments（0）

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Optimization of the Crude Oil Cooler for “Hai Yang Shi You 123” FPSO WENG Xi, TAN Jingxuan, ZHOU Yong, ZHANG Wei Ocean Engineering Equipment and Technology    2025, 12 (2): 136-139.   DOI: 10.12087/oeet.2095-7297.2025.02.29 Abstract （502）      PDF（pc） （6199KB）（128）       Knowledge map    Save The “Hai Yang Shi You 123”FPSO crude oil cooler is a plate heat exchange, which normally operates with one in use and one as backup. As the oil production in the oilfield gradually increases， the load on the crude oil cooler gradually increases， resulting in poor heat exchange efficiency. Through physical property analysis of oilfield crude oil， the main reason for the poor heat exchange effect of the cooler is that the crude oil has a high wax content， a high wax precipitation point， and severe wax deposition on the side plate wall of the crude oil， which reduces the heat exchange capacity between the crude oil and seawater. To efficiently solve this problem， a comprehensive analysis was conducted on the equipment structure and process status of the crude oil cooler. A creative idea was proposed to optimize the two coolers into series operation， the application effect of the cooler series connection was verified on site， providing a reference for the stable operation of FPSO in the future. Related Articles | Metrics | Comments（0）

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Research on the Identification of Technological Opportunities in Marine New Materials in China LIU Hongyu, WU Dajian Ocean Engineering Equipment and Technology    2025, 12 (3): 123-127.   DOI: 10.12087/oeet.2095-7297.2025.03.16 Abstract （494）      PDF（pc） （4127KB）（145）       Knowledge map    Save This study explores technological opportunities in China's marine new materials field based on patent mining. Patent data were analyzed across trends， authorization， regions， and lifecycle， and keyword clustering was used to identify hotspots. Results show the field is transitioning from growth to maturity， focusing on composites， molding， and green materials， with future directions in intelligent and multifunctional systems. Strategic suggestions are proposed to guide innovation and planning. Related Articles | Metrics | Comments（0）

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Analyzing the Key Techniques and Safety Measures for Steel Structure Hoisting in Construction Engineering ZHOU Zhenyong, LIU Yiqiang Ocean Engineering Equipment and Technology    2025, 12 (2): 107-110.   DOI: 10.12087/oeet.2095-7297.2025.02.23 Abstract （468）      PDF（pc） （2067KB）（126）       Knowledge map    Save The quality of steel structure construction and the overall stability of these structures are crucial for ensuring the safe and efficient progression of construction projects， given the significant role that steel structures play in such undertakings. To enhance the efficacy of various technologies employed during the lifting operations of steel structures within buildings， it is imperative to adopt appropriate techniques. This approach will help uphold rigorous standards concerning both the quality of lifting procedures and structural integrity. Furthermore， it is essential to implement robust measures that strengthen safety protocols during steel structure lifting activities in construction projects， effectively manage potential safety risks associated with these operations， and ultimately facilitate a secure and rational advancement of practices related to steel structure lifting. Related Articles | Metrics | Comments（0）

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Finite Element Analysis and Monitoring Scheme Design for the MCM of a Submerged Turret Production Single-Point Mooring System LIU Yixiang, LI Peng, LIU Jiannan, WANG Kun, SHI Hemu Ocean Engineering Equipment and Technology    2025, 12 (2): 120-126.   DOI: 10.12087/oeet.2095-7297.2025.02.26 Abstract （457）      PDF（pc） （10412KB）（129）       Knowledge map    Save The submerged turret production (STP) single-point mooring system operates in an environment subjected to the combined effects of mooring forces， wind， waves， and currents. Through contact with structures such as the buoyancy and mating cone module (MCM)， it transfers the impact of these loads to the hull. Under the prolonged influence of alternating loads， the MCM is prone to fatigue issues at positions where structural stress is concentrated， potentially leading to crack initiation; under extreme wind and wave conditions， there may even be a failure of structural ultimate strength， rendering the floating production storage offloading (FPSO) unable to operate normally. Therefore， developing a design for a multi-parameter monitoring and early warning system that is safe， reliable， and stable for the STP single-point system is crucial for ensuring the normal， steady， and secure operation of the FPSO. This paper focuses on the MCM of a certain FPSO， conducting structural finite element analysis to calculate the stress distribution state of the MCM structure under working conditions， identifying high-stress locations in critical areas， and providing recommendations for sensor placement schemes. This lays the groundwork for developing a monitoring and early warning system for the STP single point and arranging stress sensors. Related Articles | Metrics | Comments（0）

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Research on the Efficiency and Stability of the Filter Element in Natural Gas Lubricating Oil Aggregation Separators ZHANG Guodong Ocean Engineering Equipment and Technology    2025, 12 (2): 96-101.   DOI: 10.12087/oeet.2095-7297.2025.02.21 Abstract （439）      PDF（pc） （4110KB）（114）       Knowledge map    Save Based on the on-site actual design and operation data of the post installed lubricating oil coalescence separation system of natural gas compressors in offshore gas fields. The filtration performance of the filter element in the coalescence separation system under the same aerosol dust generation conditions is studied， and the influence of operating variables such as temperature， gas volume， and aerosol concentration on the stability of the filter element filtration performance is examined. The experimental results show that the larger the air filtration capacity of the filter element， the less affected the concentration and temperature on the filtration efficiency， and the better the stability of the filtration efficiency. When the amount of filtered gas remains constant， the lower the temperature， the less affected the change in aerosol concentration on the filtration efficiency， and the more stable the operation; The higher the aerosol concentration， the less affected the temperature change on the filtration efficiency， and the more stable the operation. This article can provide references for the operation control and optimization of coalescence filters in actual production of gas fields. Related Articles | Metrics | Comments（0）

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Safety Management Analysis of Mobile Oil Production Platform XIA Wang, JIANG Chunqi, WU Bin, QIU Shuang Ocean Engineering Equipment and Technology    2025, 12 (2): 17-20.   DOI: 10.12087/oeet.2095-7297.2025.02.04 Abstract （420）      PDF（pc） （935KB）（118）       Knowledge map    Save Based on the analysis of the operational mode and management regulations of the first mobile oil platform in China， combined with the characteristics of its export operation， this paper analyzes the regulatory feasibility of the platform according to the fixed platform from the aspects of maritime supervision focus， platform characteristics， oil spill pollution sources and related technical standards， policies and regulations. Although the platform has certain technical characteristics of “ship”， it is not for the purpose of maritime transportation， and its own moving characteristics are not obvious， and its transport operation is similar to that of fixed platform. Therefore， during the normal operation of the platform， under the premise of meeting the existing policies and regulations， the use of appropriate on-site safeguard measures can be supervised and managed according to the fixed platform， that is， it will be more reasonable and efficient to manage according to the two different states of the mobile platform (production and towing). Related Articles | Metrics | Comments（0）

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Fault Analysis of Low Outlet Pressure and Reduced Speed during Slag Discharge of Lube Oil Separator WENG Fei, ZHOU Yong, SHI Yabo, ZHOU Chuxiong Ocean Engineering Equipment and Technology    2025, 12 (2): 140-143.   DOI: 10.12087/oeet.2095-7297.2025.02.30 Abstract （407）      PDF（pc） （2089KB）（120）       Knowledge map    Save As a key equipment for lube oil filtration in large diesel units of offshore facilities， the main function of the lube oil separator is to separate the lube oil used in the fuel oil unit. Through centrifugal separation， the impurities and moisture inside the lube oil are removed， ensuring the quality of the lube oil and avoiding damage to the operation of the fuel oil unit due to lube oil deterioration. At the same time， the service life of the equipment is improved， the frequency of lube oil replacement is reduced， and the economic benefits are improved. In order to reduce the frequent shutdown of the lube oil separator due to speed reduced during slag discharge and low outlet pressure， the cause of the fault is analyzed and a solution is proposed， providing a reference basis for equipment fault handling. Related Articles | Metrics | Comments（0）

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Feasibility Analysis of Layered Water Injection Assisting Flow in Thin Interbedded Oil Fields of Strong Water Bodies CHEN Xueli, WANG Li, ZHANG Ruigang Ocean Engineering Equipment and Technology    2025, 12 (2): 117-119.   DOI: 10.12087/oeet.2095-7297.2025.02.25 Abstract （380）      PDF（pc） （1877KB）（127）       Knowledge map    Save Water injection in offshore thin interbedded oil fields is a great challenge because of its high cost and difficulty in construction. Through long-term research and practice， separated layer self-source enclosed water injection technology is put forward to supplement energy. Based on the characteristics of offshore oil fields， the screening principles of target layer， water source layer and pilot water injection well group are formulated. We developed self-source enclosed injection pipe string and underground data monitoring system， such as measuring and adjusting， water quality monitoring， etc.， and has the huge advantages of multi-purpose in one well， low cost， green energy saving and quick effect. This technology can reduce costs related to drilling， platform facilities and surface water injection facilities， and effectively reduce water corrosion and reservoir damage. It has a wide range of reference and promotion significance in similar thin interbedded water injection oilfields offshore. Related Articles | Metrics | Comments（0）

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Latest Progress and Perspective in Analysis Technologies of Floatover Installation System QIN Licheng, LIANG Xuexian, FANG Xukai, et al Ocean Engineering Equipment and Technology    2025, 12 (4): 83-95.   DOI: 10.12087/oeet.2095-7297.2025.04.12 Abstract （378）      PDF（pc） （8149KB）（99）       Knowledge map    Save With the rapid development of offshore engineering technology， offshore platforms are developing towards large-scale and integrated， which also puts forward higher requirements for offshore installation technology， and floatover installation technology also comes into being under this background. It is of great significance for the design and implementation of offshore platform installation to carry out sufficient research on the floatover system. This paper introduces the numerical and experimental modeling and analysis of the floatover system， including the hydrodynamic analysis， the modeling of the load buffer device， and the research of the nonstationary nonlinear multi-body system. Some views on future development trends are also provided. Related Articles | Metrics | Comments（0）

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Economic Analysis of Green Hydrogen and Its Derivatives Production Technology Based on Offshore Wind Power SHEN Qi, LIU Chao, LI Ouping, et al Ocean Engineering Equipment and Technology    2025, 12 (3): 94-101.   DOI: 10.12087/oeet.2095-7297.2025.03.12 Abstract （371）      PDF（pc） （3148KB）（146）       Knowledge map    Save As the global energy structure transforms and the “dual-carbon” goals are set， green hydrogen is gaining importance as a clean energy source in the petroleum refining industry. This study comprehensively assesses the technical and economic viability of producing green hydrogen， methanol， and ammonia using offshore wind power. By calculating the costs of hydrogen production， methanol synthesis， and ammonia synthesis under varying electricity costs， the study analyzes how electricity prices affect the economic viability of green hydrogen and its derivatives. The results indicate that when the electricity cost is 0.35 yuan per unit， the current alkaline electrolysis hydrogen production technology yields a hydrogen cost of 24.66 yuan/kg in the scenario of offshore wind power and onshore hydrogen production， with methanol and ammonia production costs of 5457.55 yuan/ton and 4999.43 yuan/ton， respectively. The study emphasizes that electricity cost is the key factor influencing economic viability. Reducing renewable energy electricity costs and enhancing electrolysis efficiency are crucial for boosting the competitiveness of green hydrogen and its derivatives. Finally， the article proposes suggestions for the coordinated development of policies， technologies， and industries to promote the industrialization of green hydrogen and its derivatives. Related Articles | Metrics | Comments（0）

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Design and Fabrication of a Compact Brushed Electromagnetic Catapult Based on Halbach Array ZHANG Shutian, GUO Sixing, LI Jiaqiang, et al Ocean Engineering Equipment and Technology    2025, 12 (3): 22-29.   DOI: 10.12087/oeet.2095-7297.2025.03.03 Abstract （361）      PDF（pc） （7220KB）（158）       Knowledge map    Save A compact brushed electromagnetic catapult was designed and fabricated， with focused analysis on its operational principle， structural design， and performance parameters. By investigating the electromagnetic driving characteristics of the catapult system， the key factors influencing launch efficiency are explored. Additionally， the advantages of the system in high-precision control and energy conversion efficiency are experimentally validated. The results demonstrate that the proposed electromagnetic catapult exhibits rapid response speed， high reliability， and ease of maintenance. This work provides a reference for the miniaturized design of future electromagnetic catapult systems. Related Articles | Metrics | Comments（0）

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Research on Fine-Grained Management of Electric Submersible Pump Wells Based on Artificial Intelligence WU Binfeng1, ZHANG Wei2, WANG Dong2, ZHANG Zhenxiang2 Ocean Engineering Equipment and Technology    2025, 12 (2): 152-155.   DOI: 10.12087/oeet.2095-7297.2025.02.32 Abstract （344）      PDF（pc） （1699KB）（117）       Knowledge map    Save This article aims to explore the strategies of artificial intelligence for the fine-grained management of electric submersible pump wells. By elaborating the management theory of electric submersible pumps and the application of artificial intelligence in industrial management， and analyzing relevant domestic and foreign cases， fine-grained management strategies including real-time online monitoring and warning， intelligent diagnosis of working conditions， and online optimization design are proposed to improve the management level and efficiency of electric submersible pump wells. Related Articles | Metrics | Comments（0）

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Research on the Development of Artificial Intelligence-Assisted System for FPSO Equipment Maintenance WU Bin, SHI Yabo, JIANG Chunqi Ocean Engineering Equipment and Technology    2025, 12 (2): 31-34.   DOI: 10.12087/oeet.2095-7297.2025.02.07 Abstract （338）      PDF（pc） （1420KB）（117）       Knowledge map    Save Floating production storage offloading (FPSO) plays a crucial role in the offshore oil industry， and the stable operation of FPSO equipment is directly related to production safety. However， its equipment has been in a complex marine environment for a long time， far away from land and without external technical support for a short period of time. Maintenance personnel rely entirely on their own knowledge reserves and experience to carry out equipment maintenance， and its maintenance work faces many challenges. Based on the characteristics and requirements of FPSO equipment maintenance， combined with the current development status of artificial intelligence technology， we will conduct in-depth research and development of an artificial intelligence assisted system for FPSO equipment maintenance. The system aims to improve maintenance efficiency， reduce costs， ensure safe and stable operation of equipment， and promote the intelligent development of FPSO through modules such as data collection， fault diagnosis， repair plan recommendation， predictive maintenance， and knowledge management. Related Articles | Metrics | Comments（0）

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Mapping the Research Frontiers of Global Marine Engineering (2015-2024): A Journal-Based Knowledge Graph Approach PAN Fei, WANG Xiaolong, CAI Yunze, et al Ocean Engineering Equipment and Technology    2025, 12 (3): 132-144.   DOI: 10.12087/oeet.2095-7297.2025.03.18 Abstract （325）      PDF（pc） （3336KB）（260）       Knowledge map    Save Ocean engineering serves as a cornerstone for maritime power strategies and global sustainable development. To systematically reveal the research landscape, innovation entities, and frontier evolution in global ocean engineering, this study conducts an in-depth analysis of 37889 publications from 2015 to 2024 based on the Web of Science Core Collection, employing bibliometric methods and knowledge graph analysis. The findings demonstrate: ① A fundamental shift in the global research center of gravity has occurred, with China emerging as the world's primary innovation contributor across key indicators including publication volume and citation impact—its annual publication share surged from 20.9% in 2015 to 60.1% in 2024; ② Innovation entities exhibit highly clustered characteristics, with leading Chinese universities such as Harbin Engineering University and Shanghai Jiao Tong University monopolizing the top 10 global institutional rankings, forming world-class “academic highlands”; ③ Through keyword co-occurrence and cluster analysis, seven frontier themes were identified, including marine renewable energy development, intelligent autonomous marine systems, highfidelity multi-physics simulation, and marine environmental sensing and data science, revealing that the field is being profoundly reshaped by trends of “intelligentization” “decarbonization” and “high-fidelity modeling”; ④ The journal influence landscape has been restructured, with the Chinese-hosted Journal of Ocean Engineering and Science achieving the highest impact factor (11.8) in the field, though platforms for global dissemination of top-tier research require further expansion. Finally, this study establishes a framework for modern ocean engineering frontiers centered on “sustainable & intelligent ocean engineering” supported by “three foundational pillars” and driven by “four enabling engines”. The research reveals China's historic transition from “follower” to “leader” in ocean engineering, provides researchers with a clear developmental roadmap, and profoundly elucidates the strategic urgency of building world-class scientific journals to secure academic discourse power and enhance national scientific soft power. Related Articles | Metrics | Comments（0）

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Exhibition of Modern Model Making Technology Based on the Model Making of 093 Nuclear Submarine SHOU Hai, TIAN Yutao, ZHANG Shutian, et al Ocean Engineering Equipment and Technology    2025, 12 (3): 11-21.   DOI: 10.12087/oeet.2095-7297.2025.03.02 Abstract （316）      PDF（pc） （6851KB）（160）       Knowledge map    Save Taking the 093 model production as a starting point, this paper conducts an in-depth analysis of modern model making technologies. Through a detailed elaboration of the production process of 093 nuclear submarine model， including precise digital design using 3D modeling software in the early stage to determine the accurate proportion， suitable size and select appropriate materials， the use of 3D printing technology for rapid prototyping and fine model manufacturing， and the later processing procedures such as surface cleaning， polishing and coating protection， the characteristics and advantages of modern model-making techniques in digitalization， automation， material application and fine processing are comprehensively demonstrated. At the same time， the key role of this technology in improving the efficiency of model production， enhancing the reducibility and precision of models， as well as its application prospects and development trends in the field of model making are discussed， providing a useful reference for in-depth understanding of modern model-making techniques. Related Articles | Metrics | Comments（0）

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Key Nodes in the System Commissioning of Offshore Oil Platforms ZHANG Chun Ocean Engineering Equipment and Technology    2025, 12 (4): 96-103.   DOI: 10.12087/oeet.2095-7297.2025.04.13 Abstract （303）      PDF（pc） （2452KB）（102）       Knowledge map    Save The commissioning of an offshore oil and gas production platform system is a critical task preceding mechanical completion of both onshore fabrication and offshore installation. The thoroughness and outcomes of the commissioning work will have a direct impact on the safe operation of the oil and gas fields. This article primarily addresses the preparatory work and overarching principles prior to system commissioning， alongside the key tasks that require focused attention during the commissioning phase. The primary framework encompasses platform power transmission and reception， crude oil generator commissioning， EMS (emergency management system) commissioning， central control logic testing， and the commissioning of water circulation and other utility systems. These cover areas such as power， process， utilities， and instrumentation controls. It provides a detailed elaboration on the pre-commissioning activities pertinent to conventional offshore oil and gas production platforms， the main elements of the commissioning process， and the objective of employing commissioning to promote construction progress and quality， thereby ensuring the seamless completion of the commissioning work. Related Articles | Metrics | Comments（0）

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Research and Application of Maintenance and Renovation Technology of High-Pressure Plunger Pump WANG Chao, LU Fengtao Ocean Engineering Equipment and Technology    2025, 12 (2): 59-63.   DOI: 10.12087/oeet.2095-7297.2025.02.14 Abstract （297）      PDF（pc） （3079KB）（120）       Knowledge map    Save High-pressure plunger pumps are widely used in industrial applications because of their high efficiency and reliability. The common faults of mechanical， hydraulic and electrical systems of high-pressure plunger pump are discussed， and the repair and renovation technology of each part are elaborated， including the repair of piston and cylinder block， the renovation of valve， the upgrading of sealing technology and the modernization of control system. Through the application of these technologies， the performance and service life of the pump are significantly improved， and comprehensive technical guidance for the optimization and maintenance of high-pressure piston pumps is provided. Related Articles | Metrics | Comments（0）

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Discussion on Regular Inspection Technologies for Submarine Pipelines SU Tianshui, LIAO Hengjie, HUANG Panyang Ocean Engineering Equipment and Technology    2025, 12 (3): 118-122.   DOI: 10.12087/oeet.2095-7297.2025.03.15 Abstract （287）      PDF（pc） （5619KB）（175）       Knowledge map    Save Subsea pipelines are critical infrastructure for transporting offshore oil， gas， and other resources， and their safety is vital to the marine economy and environment. This paper provides an overview of the construction and inspection status of subsea pipelines along the coast of Zhejiang Province， with a focus on external pipeline inspection technologies and methods. Taking the key area of Huibieyang in Zhejiang as an example， it analyzes and highlights that pipeline inspection should be tailored to different marine environments. Related Articles | Metrics | Comments（0）