Results 11 to 20 of about 115 (92)

Sealing Degradation Modeling and Reliability Analysis Method of Deep-Water Pipeline Connector Based on the Two-Phase Nonlinear Wiener Process

Modelling and Simulation in Engineering
The deep-water pipeline connector (DPC) is a key piece of equipment for the connection of multiple facilities located in different positions of the subsea production system.
Wei Zeng, Xumin Tian, Haisheng Chen, Wen Sun   +3 more
doaj   +2 more sources

Forward-Looking Sonar Based 6D Pose Estimation Using Acoustic-Yolo6D Detection and AnP Inversion: A Case Study for Subsea Christmas Tree Panel

Journal of Marine Science and Engineering
Subsea Christmas trees are often deployed in turbid coastal waters or seabed environments. During manipulator operations on Christmas tree panels, conventional optical servoing is severely limited by rapid electromagnetic attenuation and strong ...
Jinxing Yu, Sanming Song, Liming Li, Yuyang Lu, Taofeng Wang, Hairui Cao, Jiaxin Dong, Weilin Zang, Adam Rushworth, Bailu Si, Miaomou Chen   +10 more
doaj   +2 more sources

Surface Casing Buckling Effect on the Wellhead Movement of a Subsea Well

Mathematical Problems in Engineering, Volume 2022, Issue 1, 2022., 2022
In this work, the wellhead axial movement of a subsea well was predicted with a previously presented multi‐string model modified to account for a possible buckling of the well’s surface casing. This model represented the structural casing with a nonlinear spring that considers the casing‐soil interaction using t-z curves with hysteretic behavior.
Charlton O. de Souza, José Renato M. de Sousa, Gilberto B. Ellwanger, Emilio César C. M. da Silva, Jianguang Fang   +4 more
wiley   +1 more source

Gas Hydrate Formation Risk and Prevention for the Development Wells in the Lingshui Gas Field in South China Sea

Geofluids, Volume 2021, Issue 1, 2021., 2021
Hydrate formation risk is an important challenge in the development of deep‐water gas field. Considering the characteristics of the Lingshui (LS) gas field in the South China Sea and the difference of well structures, a model for calculating wellbore temperature and pressure in deep‐water gas production well is proposed and verified by the field data ...
Donglei Jiang, Yi Yu, Yi Huang, Wenbo Meng, Jianbo Su, Zhenggang Gong, Shengnan Nancy Chen   +6 more
wiley   +1 more source

Contact mechanical behaviors of radial metal seal for the interval control valve in intelligent well: Modeling and theoretical study

Energy Science &Engineering, Volume 8, Issue 4, Page 1337-1352, April 2020., 2020
The two‐dimensional axisymmetric assembly of the radial metal seal and the closure member is abstracted as a combination of interference fit model and cantilever beam model. The related theoretical model between the radial metal seal's contact stress and its independent variables has been derived.
Yiwei Yang, Hongwu Zhu, Dongsheng He, Changcheng Du, Liangbin Xu, Yufa He, Yan Zheng, Zhewei Ye   +7 more
wiley   +1 more source

Natural Frequencies and Mode Shapes of Drill Pipe in Subsea Xmas Tree Installation

Mathematical Problems in Engineering, Volume 2020, Issue 1, 2020., 2020
In this study, experimental and numerical investigations on the vibration characteristics of a drill pipe during the lowering of a subsea Xmas tree were presented. A fourth‐order partial differential equation with variable coefficients was established based on Euler–Bernoulli beam theory.
Wensheng Xiao, Haozhi Qin, Jian Liu, Qi Liu, Junguo Cui, Fengde Wang, Jian Li   +6 more
wiley   +1 more source

Quasistatic Nonlinear Analysis of a Drill Pipe in Subsea Xmas Tree Installation

Mathematical Problems in Engineering, Volume 2019, Issue 1, 2019., 2019
To analyse the stress and deformation of a drill pipe during the lowering of a subsea Xmas tree, a mechanical analytical model and equation were established based on Euler‐Bernoulli beam theory. The wave phase is selected as one of the variable parameters for analysis of the deformation and stress of the drill pipe.
Haozhi Qin, Jian Liu, Wensheng Xiao, Bingxiang Wang, Roberto G. Citarella   +4 more
wiley   +1 more source

A Study on the Holding Capacity Safety Factors for Torpedo Anchors

Journal of Applied Mathematics, Volume 2012, Issue 1, 2012., 2012
The use of powerful numerical tools based on the finite‐element method has been improving the prediction of the holding capacity of fixed anchors employed by the offshore oil industry. One of the main achievements of these tools is the reduction of the uncertainty related to the holding capacity calculation of these anchors.
Luís V. S. Sagrilo, José Renato M. de Sousa, Edison C. P. Lima, Elisabeth C. Porto, Jane V. V. Fernandes, Ioannis K. Chatjigeorgiou   +5 more
wiley   +1 more source

Design of a Digital Twin System for Deepwater Installation Systems

Digital Twins and Applications, Volume 3, Issue 1, January/December 2026.
A digital twin‐based system is proposed to enhance the safety and efficiency of deepwater subsea installation by enabling real‐time monitoring, predictive analysis and intelligent decision‐making. The system integrates simulation, sensing and VR interaction to support planning and operations in complex offshore environments.
Song Chen, Zhifeng Wang, Shuo Wang, Lizhi Duan, Jianhang Wu, Renhui Wu, Yan Qu   +6 more
wiley   +1 more source

Numerical Simulation and Regularity Study for Throttling Temperature Drop of Multiphase Flow through Subsea Chokes

Shiyou jixie, 2022
As a key component of subsea Christmas tree,subsea chokes work in deep water,high pressure and low temperature environment.It is easy to produce natural gas hydrates to block chokes and downstream pipelines due to J-T effect.Therefore,it is very ...
Zhu Junlong, Li Qingping, Qin Rui, Yao Haiyuan   +3 more
doaj