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What cause overstressed unity wellhead service platform?

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The overstressed unity in a wellhead service platform can be caused by various factors such as seismic events, subsidence, and environmental loads. Seismic analysis of offshore structures in Malaysia has shown that wellhead platforms are stable against earthquake loading . Additionally, subsidence around oil and gas exploitation areas can lead to structural failures, especially when subjected to increased environmental loads like storm conditions . Furthermore, the design of wellhead operating platforms is crucial to ensure structural integrity and prevent overstressing. Innovative solutions like unmanned wellhead platforms have been developed to reduce costs in the oil and gas industry, emphasizing the importance of proper design against accidental actions like fire to prevent overstressing .

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Patent Wellhead operating platform Li Guangjie, Mao Lulu, Xie Jian, Chen Zhengdan, Yang Wenwei, Mao Yanli, Wan Jin, Tang Chuandong, Zhou Lei, Zhao Xiaojing - Show less +9 more 10 Apr 2020	Not addressed in the paper.
Open access•Dissertation Wellhead platform subjected to accidental loads Anders Salberg Strand 01 Jan 2016	The overstressed unity wellhead service platform can be caused by accidental loads such as fire, which the structure is designed to withstand through conservative measures and simulations.
Open access Critical member analysis of wellhead offshore platform due to El Centro earthquake Yee Hui Leng 01 Jun 2018 3 Citations	The El Centro earthquake analysis on the wellhead offshore platform in Malaysia showed that seismic loading was not a cause of overstressed unity in the critical member.
Open access•Journal Article•DOI Analisis Risiko Keruntuhan Jacket Wellhead Tripod Platform Pasca Subsidence Handayanu Handayanu, Daniel M. Rosyid - Show less +1 more 22 May 2023-Jurnal Teknik ITS	Overstressed unity in wellhead service platform can be caused by subsidence leading to structural failure, analyzed through Reserve Strength Ratio (RSR) and reliability assessments in the study.
Open access•Journal Article•DOI Unity check of typical offshore wellhead platform in Malaysia using Aceh earthquake loading data and SAP2000 S Wan Ahmad, L J Qing, Azlan Adnan, Ramli Nazir, N I Ramli, M. I. Ali, M. I. Adiyanto, Khairunisa Muthusamy, S K Muiz, Mohd Zamri Ramli - Show less +9 more 01 Feb 2019 2 Citations	The overstressed unity in wellhead service platform can be caused by seismic activity, but the study confirms that Malaysian offshore platforms are safe under low seismic conditions.

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What cause the unity check to be overstressed on offshore platform?4 answersThe unity check on offshore platforms can be overstressed due to various factors such as inadequate connection between piles and the jacket, leading to decreased platform stiffness and excessive vibration. Additionally, the presence of corrosion defects in platform elements can act as stress concentrators, potentially causing critical overloads. Moreover, extreme environmental conditions like typhoons can necessitate heavy concrete reinforcement in platform legs, impacting the overall structural weight and safety. However, studies have shown that offshore wellhead platforms in Malaysia remain under safe conditions when subjected to low seismic activity, indicating a satisfactory performance in unity checks under specific loading scenarios.

What cause the unity check to be overstressed on offshore topside?5 answersThe unity check on offshore topsides can be overstressed due to various factors. One significant reason is the rapid exertion of blast loads, leading to a temporary increase in material strength of approximately 20%-27%. Additionally, the design of offshore structures must consider conservative safety standards, extreme environmental conditions, and loading directions to ensure structural integrity. Moreover, the absence of earthquake load considerations in existing offshore structures can impact the unity check, highlighting the importance of comprehensive analysis under various loading conditions. Furthermore, during the installation of driven piles as foundations for offshore structures, dynamic stresses and fatigue damage from pile driving operations can contribute to potential unity check exceedances. These factors collectively emphasize the complexity and criticality of ensuring the unity check criteria are not overstressed in offshore topside structures.

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