Transverse Vibration Analysis of the Riser in Deep Water

Li, Zifeng; Wang, Peng; Zhao, Min; Li, Xuejiao

doi:10.2174/1874834101508010038

Cited by 6 publications

(3 citation statements)

References 9 publications

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“…A considerable number of experiment studies and numerical simulations [4] - [14] for VIV under the uniform flow have been performed so far. However, currents are not uniform, but sheared.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of the Vortex-Induced Vibration of Drilling Risers under the Shear Flow with the Same Shear Parameter at the Different Reynolds Numbers

2014

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A considerable number of studies for VIV under the uniform flow have been performed. However, research on VIV under shear flow is scarce. An experiment for VIV under the shear flow with the same shear parameter at the two different Reynolds numbers was conducted in a deep-water offshore basin. Various measurements were obtained by the fiber bragg grating strain sensors. Experimental data were analyzed by modal analysis method. Results show several valuable features. First, the corresponding maximum order mode of the natural frequency for shedding frequency is the maximum dominant vibration mode and multi-modal phenomenon is appeared in VIV under the shear flow, and multi-modal phenomenon is more apparent at the same shear parameter with an increasing Reynolds number under the shear flow effect. Secondly, the riser vibrates at the natural frequency and the dominant vibration frequency increases for the effect of the real-time tension amplitude under the shear flow and the IL vibration frequency is the similar with the CF vibration frequency at the Reynolds number of 1105 in our experimental condition and the IL dominant frequency is twice the CF dominant frequency with an increasing Reynolds number. In addition, the displacement trajectories at the different locations of the riser appear the same shape and the shape is changed at the same shear parameter with an increasing Reynolds number under the shear flow. The diagonal displacement trajectories are observed at the low Reynolds number and the crescent-shaped displacement trajectories appear with an increasing Reynolds number under shear flow in the experiment.

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“…A considerable number of experiment studies and numerical simulations [4] - [14] for VIV under the uniform flow have been performed so far. However, currents are not uniform, but sheared.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of the Vortex-Induced Vibration of Drilling Risers under the Shear Flow with the Same Shear Parameter at the Different Reynolds Numbers

2014

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“…The rod string dynamics in petroleum engineering had been studied extensively by many experts and scholars: the longitudinal vibration of sucker rod [13,14], the transverse vibration of traditional pressure bar [15,16] and moving beam [17,18], the transverse forced vibration of riser under tension [19][20][21], the transverse vibration and collision problems for wellbore under fluctuating pressure [22][23][24][25]. However, the research on the transverse vibration triggered by the buckling deformation excitation seems to have not been discovered so far.…”

Section: Introductionmentioning

confidence: 99%

The simulation model of sucker rod string transverse vibration under the space buckling deformation excitation and rod-tubing eccentric wear in vertical wells

Xiu-rong¹,

Dong²,

Liu³

et al. 2018

J. vibroeng.

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Considering the limitations of the static buckling theory on the eccentric wear of sucker rod and tubing, a new dynamic analysis method for the transverse vibration of sucker rod in the tubing is proposed. Taking the axial distribution load at the rod body and the dynamic load at the bottom into account, the dynamic model of transverse vibration is established based on the space buckling configuration of rod string which regarded as the deformation excitation during the down stroke. To solve the mathematical equations, the finite difference method is used to discretize the well depth, and the Newmark-beta method is used to discretize the time. Meanwhile, a restitution coefficient is introduced to depict the change of velocity and the momentum after the collision. The result shows the phenomenon of rod-tubing collision occurs mainly in the down stroke after the rod string post buckling; the collision force from the wellhead to the bottom increases gradually, of which distributed almost along the entire well depth; and the high frequency collision occurs below the neutral point where the collision force is also the biggest. Further, the collision frequency and the collision force decrease successively from the neutral point to the wellhead direction. But during the up stroke, few collisions occur, and the collision force is also very small. The simulation model is suitable for the eccentric wear analysis of rod-tubing, and provides a new theoretical basis for the optimal allocation of the centralizer.

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“…Connaire et al (2015) used quasi-rotations and the NewtoneRaphson method for riser analysis and showed that the approach provided advantages for subsea riser sections. Li et al (2015) analyzed the transverse vibration of the riser and indicated that the largest transverse displacement was found in the upper section of the riser. Major et al (2015) studied the influence of drilling string rotation on the dynamic response of drilling risers and demonstrated that the drill string rotation reduced the natural frequency and increased the amplitude of the vibration of the drilling riser.…”

Section: Introductionmentioning

confidence: 99%

Deep water drilling riser mechanical behavior analysis considering actual riser string configuration

Mao

Liu

Zhou

et al. 2016

Journal of Natural Gas Science and Engineering

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Transverse Vibration Analysis of the Riser in Deep Water

Cited by 6 publications

References 9 publications

Experimental Study of the Vortex-Induced Vibration of Drilling Risers under the Shear Flow with the Same Shear Parameter at the Different Reynolds Numbers

Experimental Study of the Vortex-Induced Vibration of Drilling Risers under the Shear Flow with the Same Shear Parameter at the Different Reynolds Numbers

The simulation model of sucker rod string transverse vibration under the space buckling deformation excitation and rod-tubing eccentric wear in vertical wells

Deep water drilling riser mechanical behavior analysis considering actual riser string configuration

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