Results 21 to 30 of about 5,546 (148)

Analysis on Localized Key Technologies of Gate Valve and Actuator Used in Subsea Christmas Tree

open access: yesShiyou jixie, 2021
The gate valve and actuator structure of subsea Christmas tree is different from the onshore valve structure, the gate and valve seat seal and actuator structure are more complex, and the reliability requirements are higher.
Wan Chunyan   +5 more
doaj  

A Study on the Holding Capacity Safety Factors for Torpedo Anchors

open access: yesJournal 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   +5 more
wiley   +1 more source

Study on the impacts of possible amendments to the ATEX, the Machinery, and the Pressure Equipment Directives with respect to equipment intended for use in the offshore oil and gas industry [PDF]

open access: yes, 2016
The purpose of this study is to provide the Commission with the information necessary for the assessment of the economic, social, and environmental impacts of a possible extension of the scope of the EU product safety legislation (ATEX Directive 2014/34 ...
AZNAREZ SALVATIERRA MARIA ARANZAZU   +3 more
core   +1 more source

Simulation Study on Hydraulic System of Shallow Mud Line Christmas Tree

open access: yesShiyou jixie, 2022
In order to explore the hydraulic system performance of ST4×2-5M shallow mud line Christmas tree, the parameters, functions and principles of the 3 key parts affecting the performance of the hydraulic system were studied, and the models of gate ...
Li Huan   +4 more
doaj  

Comparative Analysis of Installation Methods of 500 m Subsea Christmas Tree

open access: yesShiyou jixie, 2020
At present, the common installation methods for subsea Christmas tree in China are drill pipe installation method and wire rope installation method. For the subsea Christmas tree with a water depth of 500 m and a weight of 70 t, the marine engineering ...
Zhang Weiguo, Li Yong, Jin Hao
doaj  

Numerical analysis and risk analysis of the lifting operation of a subsea template [PDF]

open access: yes, 2022
Two different templates, template A and template B, for subsea oil and gas production are studied in this work. Numerical time-domain simulations for the crossing of the splash zone are run in OrcaFlex. Template A has suction anchors that have a diameter
Lervik, Martin Sande
core  

Optimization Design for K-shaped Metal Seal Structure Based on Response Surface Method

open access: yesShiyou jixie, 2022
The sealing structure of K-shaped metal seal in tubing hanger of subsea Christmas tree is complex, it must be studied deeply by multi-factor analysis method.
Wang Zhanwen   +4 more
doaj  

A review of offshore blowouts and spills to determine desirable capabilities of a subsea capping stack [PDF]

open access: yes, 2012
The events surrounding the Deepwater Horizon disaster have changed the face of deepwater operations. In order to continue drilling in the Gulf of Mexico, the regulatory body, the Bureau of Safety and Environmental Enforcement (BSEE), has required that ...
Smith, Louise Matilde
core   +2 more sources

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

open access: yesShiyou 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   +3 more
doaj  

Optimization of K‐Shaped Metal Sealing Ring for Subsea Tubing Hanger Based on Response Surface Method

open access: yesModelling and Simulation in Engineering, Volume 2025, Issue 1, 2025.
The K‐shaped metal sealing ring of the subsea tubing hanger is a crucial sealing component ensuring wellhead sealing. Optimizing its structure can enhance the sealing performance of the tubing hanger and improve the reliability of subsea wellhead equipment.
Huan Xie   +5 more
wiley   +1 more source

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