Results 141 to 150 of about 21,226 (204)
Journal of Marine Science and Engineering, 2023 During deepwater drilling, the subsea wellhead will be subjected to dynamic loads transmitted from the marine environment, floating drilling platform, riser, and blowout preventer (BOP).
Yanbin Wang, Liurui Guo
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Fatigue Assessment of Subsea Tree Connectors and Wellheads
Volume 3: Materials Technology; Jan Vugts Symposium on Design Methodology of Offshore Structures; Jo Pinkster Symposium on Second Order Wave Drift Forces on Floating Structures; Johan Wichers Symposium on Mooring of Floating Structures in Waves, 2011 Drilling and workover operations offshore impose fatigue loads on the subsea tree and wellhead due to the riser dynamics. In particular, the connector between the tree composite valve block and the wellhead components may be subjected to fatigue damage. This is primarily due to specific mechanical connector designs, girth welds and thickness or section
Jaime Buitrago
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Numerical Simulation of Subsea Wellhead Stability for Deepwater Drilling
Proceedings of International Oil and Gas Conference and Exhibition in China, 2010 Abstract Subsea wellhead bearings complex stress because it joint with the marine riser and casing string. According to mechanical analysis of subsea wellhead for deepwater drilling, a comprehensive stability of subsea wellhead analysis method was established.
Zhichuan Guan, Kan-hua Su, Yinao Su
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Journal of Marine Science and Engineering, 2022 The subsea wellhead (SW) system is a crucial connection between blowout preventors (BOPs) and subsea oil and gas wells. Excited by cyclical fatigue dynamic loadings, the SW is prone to fatigue failure, which would lead to the loss of well integrity and ...
Yuanjiang Chang, Guoming Chen
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Design Verification and Load Estimation of Subsea Wellhead in HPHT Applications
Offshore Technology Conference, 2017 Abstract Subsea equipment design verification and validation are to be performed by analysis and testing, respectively. Two of the most important aspects of this process for high-pressure, high-temperature (HPHT) applications are load estimation and fatigue assessment. This paper presents dynamic loading scenarios typically considered in
Gwo-Ang Chang, Meng-Lung Liu, Hao Song
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A Method of Protecting Subsea Wellheads Against Environmental Hazards
European Offshore Technology Conference and Exhibition, 1980 Abstract This paper presents the evaluation of the risk of damage to subsea wellheads from fishing gear and oil related objects. It lists the alternative forms of protection considered and the selection of the most cost effective type. Details are given of the design and installation of two protective covers in the North ...
George P. Foden +2 more
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Predicting Subsea Wellhead Fatigue Damage with a Machine Learning Based Tool
SPE Western Regional MeetingAbstract Subsea wells are susceptible to wellhead fatigue damage during operation. Accurate and timely prediction of this fatigue damage is crucial for informed rig decisions, ensuring operational safety while minimizing nonproductive time (NPT). However, conventional methods for assessing wellhead fatigue overestimate damage, leading to
Wangming Lu, Yixiong Ma, Shuxing Cheng
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Method for Fatigue Testing of Subsea Wellhead Connection Segments
Volume 2A: Structures, Safety, and Reliability, 2020Abstract For subsea well drilling, the drilling rig is connected to the subsea well by a marine riser and subsea BOP equipped with a remotely controlled wellhead connector latched onto the subsea wellhead profile. The level of cyclic loading on subsea wellheads is steadily increasing due to use of increasingly larger ...
Pedro Barros +4 more
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Subsea Wellhead Fatigue Tracking Tool for HPHT Developments
Offshore Technology Conference, 2023Abstract Many operators are currently dealing with the engineering challenges of high-pressure and high-temperature (HPHT) field developments which push conventional subsea technology beyond its limits. In many cases, a project specific risk assessment is required to determine the acceptability of wellhead fatigue response during ...
Wangming Lu +4 more
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The Design and Analysis of a TLP Subsea Wellhead
Offshore Technology Conference, 1985ABSTRACT The subsea wellhead for a tension leg platform application may be subjected to large external loads when the drilling riser remains connected during the 100 year storm. In addition, because the subsea wellhead is tied back to the platform for production, it must withstand a large number of smaller loads ...
W.A. Valka, J.R. Fowler
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