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Dynamic Bayesian network-based reliability and safety assessment of the subsea Christmas tree
Process Safety and Environmental Protection, 2021Abstract The major functions of the subsea Christmas tree include production management, wellhead pressure control, chemical reagent injection, and oil/gas production safety control. It is necessary to investigate the reliability and safety of the tree for safe and stable operation of subsea production systems.
Nan Pang +6 more
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Computers & Industrial Engineering, 2021 Abstract With the continuous improvement of the complexity and comprehensive level of the system, its reliability becomes more and more important. The remaining useful life (RUL) estimation method using the degradation model with random effect to describe the degradation process of the system has been widely used such as Wiener process.
Baoping Cai +6 more
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Reliability Analysis Method of a Control System for Subsea All-Electric Christmas Tree
Journal of Marine Science and Application, 2021The subsea all-electric Christmas tree (XT) is a key equipment in subsea production systems. Once it fails, the marine environment will be seriously polluted. Therefore, strict reliability analysis and measures to improve reliability must be performed before a subsea all-electric XT is launched; such measures are crucial to subsea safe production.
Peng Liu +3 more
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A dynamic Bayesian network based methodology for fault diagnosis of subsea Christmas tree
Applied Ocean Research, 2020Abstract A subsea Christmas tree (XT) is an extremely important part of a subsea production system. The safety-fault of subsea XT indicates that no major safety incidents are difficult to diagnose. To identify the faulty components and distinguishing the fault types, including the blocking, leakage, and especially safety-fault, we present a dynamic ...
Peng Liu +6 more
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Strength design method for tubing hanger of subsea christmas tree against big temperature difference
China Ocean Engineering, 2014The tubing hanger is an important component of the subsea Christmas tree, experiencing big temperature difference which will lead to very high thermal stresses. On the basis of API 17D/ISO 13628-4 and ASME VIII-1, and by comprehensively considering the erosion of oil and the gravity load of the tubing, a calculation model is established by regarding ...
Xiao-lan Luo +5 more
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Testing Technology of Subsea Christmas Tree
Advanced Materials Research, 2012As an important part of the deep-water oil and gas field, the development process of subsea Christmas tree includes design, manufacture and test. The testing technology of subsea Christmas tree supplies reliability and security for the use of subsea Christmas tree, and it`s an important content of the localization of subsea Christmas tree.
Bao Yan Chen +6 more
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Numerical analysis of cathodic protection of a Q355ND frame in a shallow water subsea Christmas tree
Materials TestingAbstract This study develops a 3D model of a Christmas tree using cathodic protection technology and conducts numerical simulations on the Q355ND framework of a shallow Christmas tree. The boundary element method is employed for modeling, examining the distribution of protection potentials under varying corrosion layer breakage rates,
Shaodong Ju +6 more
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Buckling of Flowlines of Subsea Christmas Tree Based on Genetic Algorithm
ICPTT 2011, 2011By using the ABAQUS software, a finite element model for the flowline operating in South China Sea is developed and the structural strength analysis of the flowline under different water depth is performed. Meanwhile, by using genetic algorithm, the variation trend is forecasted, which is based on the calculation results of the flowline under different
Rui Qin +5 more
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