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Yan Zhang, Jianhong Ye, Kunpeng He and Songgui Chen
Submarine pipeline is a type of important infrastructure in petroleum industry used for transporting crude oil or natural gas. However, submarine pipelines constructed in high seismic intensity zones are vulnerable of attacks from seismic waves. It is im...
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Bochen Duan, Shengping Wang, Changlong Luo and Zhigao Chen
In recent years, the surge in marine activities has increased the frequency of submarine pipeline failures. Detecting and identifying the buried conditions of submarine pipelines has become critical. Sub-bottom profilers (SBPs) are widely employed for pi...
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Ke Hu, Xinglan Bai and Murilo A. Vaz
To investigate the different influencing characteristics of local scour around submarine pipelines, hydrodynamic and sediment transport two-dimensional models based on Flow-3D are used to numerically simulate the local scour around the pipeline under ste...
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Xing Zou, Botao Xie, Zhipeng Zang, Enbang Chen and Jing Hou
Sand waves are commonly formed on the sandy seabed of the continental shelf and characterized by their regular wave-like shape. When a submarine pipeline is laid on this type of seabed, it often experiences free spans due to the unevenness of the seabed....
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Lingxiao Quan, Jing Gao, Changhong Guo and Chen Fu
The hydraulic pipeline vibration noise is one of the main noise sources in submarine stealth conditions. Taking the local hydraulic system of a certain type of submarine as the research object, a model is first developed to simulate water hammer pressure...
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Daicheng Peng, Fei Cheng, Xiaoyu She, Yunpeng Zheng, Yongjie Tang and Zhuo Fan
Submarine pipelines are a safe and energy-efficient mode of gas transport. However, due to the complex manufacturing process and harsh operating environment, submarine pipelines are subject to fatigue cracks under long-term cyclic loading. A comprehensiv...
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Ruigeng Hu, Xiuhai Wang, Hongjun Liu, Hao Leng and Yao Lu
Local scour around a submarine piggyback pipeline in combined waves and current is investigated experimentally. Based on the experimental results, the scour evolution and scour morphology are firstly analyzed. Then, a comparison with the equilibrium scou...
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Ming Ju, Xiaodong Xing, Liquan Wang, Feihong Yun, Xiangyu Wang and Hongqian Liao
During the reeling process of the reel-lay method, the pipe will be subjected to combined loading of tension and bending. Excessive ovalization of the pipe will affect the structural performance and even lead to structural instability of the pipe. In thi...
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Panyang Huang, Xin Meng, Haiyang Dong and Lin Chong
Submarine pipelines are the lifelines of the national economy. Under the influence of typhoons, high-speed currents and waves continuously erode the seabed, leading to suspension or even rupture of pipelines. Therefore, it is of great importance to study...
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Xiaofei Cheng, Jun Yang, Tiaojian Xu and Qianyuan Xu
In this study, physical model tests are used to investigate the effects of a varying number of wave and current parameters, the gap ratios between the pipeline and seabed, the spacing ratios between the two pipelines and the diameter ratios on the hydrod...
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Bo Zhang, Rui Gong, Tao Wang and Zhuo Wang
Submarine pipelines, as arteries for offshore oil and gas transportation, play a particularly important role in the exploitation of offshore oil and gas resources. Since the world?s first submarine pipelines were laid in the Gulf of Mexico, numerous fail...
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Meng-Yu Lin and Li-Jie Wang
In this study, a finite element method was used to establish a two-dimensional numerical model to solve the problem of the Biot equation describing the poroelastic seabed, and to analyze the seepage force on a buried submarine pipeline under the propagat...
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Xueyuan Zhu, Qinglong Hao and Jie Zhang
Anchor penetration is an important issue involved in the study of submarine pipeline damage accidents. To explore the penetration of a ship?s anchor under certain conditions, this study investigated the motion and force of an anchor and formulated a calc...
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Arman Kakaie, C. Guedes Soares, Ahmad Kamal Ariffin and Wonsiri Punurai
A fracture mechanics-based fatigue reliability analysis of a submarine pipeline is investigated using the Bayesian approach. The proposed framework enables the estimation of the reliability level of submarine pipelines based on limited experimental data....
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Youkou Dong, Enjin Zhao, Lan Cui, Yizhe Li and Yang Wang
Submarine pipelines are widely adopted around the world for transporting oil and gas from offshore fields. They tend to be severely ruined by the extreme waves induced by the natural disaster, such as hurricanes and tsunamis. To maintain the safety and f...
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Ciheng Zhang, Zhipeng Zang, Ming Zhao, Yanfei Chen and Jinfeng Zhang
The occurrence of a buried submarine pipeline crossing a channel becoming damaged by the impact of a falling anchor is becoming more common. It is important to analyze the dynamic response of pipelines exposed to such impact and develop effective protect...
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Yumin Shi, Fuping Gao, Ning Wang and Zhenyu Yin
The instability of a partially embedded pipeline under ocean currents involves complex fluid?pipe?soil interactions, which may induce two typical instability modes; i.e., the lateral instability of the pipe and the tunnel erosion of the underlying soil. ...
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Zhiyong Zhang, Yakun Guo, Yuanping Yang, Bing Shi and Xiuguang Wu
In nearshore regions, bidirectional tidal flow is the main hydrodynamic factor, which induces local scour around submarine pipelines. So far, most studies on scour around submarine pipelines only consider the action of unidirectional, steady currents and...
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Xiao Xiao Wang, Dong-Sheng Jeng and Chia-Cheng Tsai
The evaluation of the wave-induced seabed instability around a submarine pipeline is particularly important for coastal engineers involved in the design of pipelines protection. Unlike previous studies, a meshfree model is developed to investigate the wa...
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Fengming Du, Cong Li and Weiwei Wang
Oil and gas exploration is a sector which drives the global economy and currently contributes significantly to global economic development. The safety of subsea pipelines is deeply affected by factors such as pipeline buckling, corrosion and leakage. Onc...
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