Dynamic Response Analysis of Drill Pipe Considering Horizontal Movement of Platform During Installation of Subsea Production Tree

Wang, Fei; Chen, Neng

doi:10.2478/pomr-2020-0043

Cited by 7 publications

(3 citation statements)

References 13 publications

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“…Riserless drilling is significant for ocean exploration [1][2][3]. As the core component of riserless drilling, under flow and rotation, flow-induced vibration seems to increase the damage to the drilling pipe, and the phenomenon of flow-induced vibration of the drilling pipe has attracted extensive attention from scholars [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Vibration of a Rotating Pipe in Still Water and in Flow

Geng

Liu

et al. 2023

Polish Maritime Research

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To illustrate the vibration characteristics of a rotating pipe in flow, experiments were conducted for a pipe in flow, a rotating pipe in still water and a rotating pipe in flow. For the pipe in flow without rotation, the trajectory diagram is ‘8’ shaped. For the rotating pipe in still water, a multiple frequency component was induced, and a ‘positive direction whirl’ was found. For the flow and rotation, at a flow velocity of 0.46 m/s, the vibration is dominated by the combination of flow and rotation. With an increase in rotating frequency, the trajectory of the rotating pipe varies from an ‘8’ shape to a circular shape and the ‘reverse direction whirl’ is induced, which is different from ‘positive direction’ in still water. The vibration frequency ratio increases uniformly with flow velocity. At a flow velocity of 1.02 m/s, at which the frequency is close to the theoretical natural frequency, the vibration frequency ratio is f*≈1. Predominantly governed by vortex-induced vibration (VIV), the vibration behavior of a rotating pipe subjected to fluid flow conditions has been found to exhibit complete vanishing of whirl. The vibration characteristics of a rotating pipe in flow are studied by the experiments which is benefit for structural drilling design.

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Section: Introductionmentioning

confidence: 99%

Experimental Study on Vibration of a Rotating Pipe in Still Water and in Flow

Geng

Liu

et al. 2023

Polish Maritime Research

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“…The drilling rig employees are potentially exposed to the eruption of oil, gas, or fire, which puts them under the impact of permanent stress. They are also exposed to dangers related to offshore drilling operations, ‘access’ to the workplace by helicopter or, in the case of adverse weather conditions, by ship ( Leszczyńska & Jeżewska, 2010 ; Leszczyńska, 2016 ; Wang & Chen, 2020 ).…”

Section: Introductionmentioning

confidence: 99%

Psychosocial work strains and well-being in the process of adapting to occupational stress: longitudinal studies of offshore rig workers

Leszczyńska¹,

Peplińska²

2023

Health Psychology Report

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BackgroundThe work on offshore rigs is related to a number of physical and mental burdens. The subject matter of the paper refers to the assessment of the relation between the mode of adapting to occupational stress and the feeling of well-being among the employees of offshore rigs in Poland.Participants and procedureThe research procedure is a longitudinal study and encompasses analysis of data between 1993 and 2014. 167 employees of the Polish offshore rigs were studied: all of them were male and the average age was 42. Measuring tools were used to as-sess the subjective occupational stress, psychosocial work conditions, evaluation of physical and mental well-being and styles of coping with stress.ResultsThe perceived level of stress directly affects mental well-being (r = .19, p = .048): the higher the level of stress, the worse is the mental well-being (β = –.30). In a considerable part, the dependence between occupational stress and mental well-being may be clarified by the impact of the style of coping with occupational stress and the rate of stress dynamics (r = .32, p = .004). The higher the share of task-oriented coping style as compared to the emotion and avoidance-oriented style, the higher is the self-reported mental well-being. The higher the probability of affiliation with the group reporting a decrease in stress, the higher is the self-reported mental well-being. Perceiving stress has no direct or indirect impact on physical well-being (β =. 09; β = .08; β = –.11).ConclusionsA dependence exists between the process of adapting to stress and the level of the self-reported mental well-being of the rig employees. The higher the probability of adaptation to the difficult situation at work in a way that the self-reported stress is reduced, the higher the self-reported mental well-being. Perceiving stress bears no direct or indirect impact on the physical well-being.

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“…Sample photograph of an off shore support vessel (OSV) operating at an off shore wind turbine (OWT) farm [1] Th ese issues are important and have been the subject of numerous scientifi c studies. Safety at sea is very important, therefore research has been carried out on various ocean engineering structures for diff erent purposes and dynamics [4][5][6][7][8][9][10][11][12]. For example, an analysis of ship collisions with 3 types of support structures was published by [13].…”

Section: Introductionmentioning

confidence: 99%

The Influence of Selected Strain-Based Failure Criteria on Ship Structure Damage Resulting from a Collision with an Offshore Wind Turbine Monopile

Niklas

Bera

2021

Polish Maritime Research

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Offshore wind farms are developing well all over the world, providing green energy from renewable sources. The evaluation of possible consequences of a collision involves Finite Element computer simulations. The goal of this paper was to analyse the influence of selected strain-based failure criteria on ship damage resulting from a collision with an offshore wind turbine monopile. The case of a collision between an offshore supply vessel and a monopile-type support structure was examined. The results imply that simulation assumptions, especially the failure criteria, are very important. It was found that, using the strain failure criteria according to the minimum values required by the design rules, can lead to an underestimation of the ship damage by as much as 6 times, for the length of the hull plate, and 9 times, for the area of the ship hull opening. Instead, the adjusted formula should be used, taking into account both the FE element size and the shell thickness. The influence of the non-linear representation of the stress-strain curve was also pointed out. Moreover, a significant influence of the selected steel grade on collision damages was found.

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Dynamic Response Analysis of Drill Pipe Considering Horizontal Movement of Platform During Installation of Subsea Production Tree

Cited by 7 publications

References 13 publications

Experimental Study on Vibration of a Rotating Pipe in Still Water and in Flow

Experimental Study on Vibration of a Rotating Pipe in Still Water and in Flow

Psychosocial work strains and well-being in the process of adapting to occupational stress: longitudinal studies of offshore rig workers

The Influence of Selected Strain-Based Failure Criteria on Ship Structure Damage Resulting from a Collision with an Offshore Wind Turbine Monopile

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