Lateral Vibration of Nonrotating Drill Pipe Conveying Fluid in Vertical Holes

2003 ◽  
Author(s):  
Qun Zhang ◽  
Stefan Miska
Keyword(s):  
Theoretical Model ◽  
Significant Influence ◽  
Theoretical Study ◽  
Drilling Fluid ◽  
Drill Pipe ◽  
Fortran Program ◽  
Pipe Conveying Fluid ◽  
Lateral Vibration ◽  
Numerical Examples ◽  
Conveying Fluid

A theoretical study has been performed on the lateral vibration of non-rotating drillpipe interacted with drilling fluid in vertical holes. Particular attention is paid to the interaction between drillpipe and drilling fluid near drillpipe neutral point zone. A new theoretical model has been established. The interaction between drillpipe and drilling fluid is characterized in this model. Dimensional analysis has been conducted to generalize this model. An innovative numerical method has been developed to solve the eigensystem. A FORTRAN program has been developed to model the behavior of drillpipe conveying fluid in vertical holes. Several numerical examples are provided to show the influences of drilling fluid on drillpipe dynamics. Fluid is considered to be flowing downward inside pipe and upward in annulus simultaneously. Results show that drilling fluid has significant influence on drillpipe dynamics.

Effects of Flow–Pipe Interaction on Drill Pipe Buckling and Dynamics

2005 ◽  
Vol 127 (2) ◽  
pp. 129-136 ◽  
Author(s):  
Qun Zhang ◽  
Stefan Miska
Keyword(s):  
Theoretical Model ◽  
Theoretical Study ◽  
Drilling Fluid ◽  
Drill Pipe ◽  
Neutral Zone ◽  
Lateral Vibration ◽  
Interaction Forces ◽  
Numerical Examples ◽  
Statics And Dynamics ◽  
Hydrodynamic Influence

A theoretical study has been performed on the buckling and lateral vibration of drillpipe interacted with incompressible fluid in vertical holes. Particular attention is paid to the flow–pipe interaction near drillpipe neutral zone. A new theoretical model has been established. The flow–pipe interaction forces are characterized in this model. Dimensional analysis has been conducted to generalize this model. An innovative numerical method has been developed to solve the eigensystem. Several numerical examples are provided to show the effects of flow–pipe interaction on drillpipe buckling and dynamics. Results show that drilling fluid has significant hydrodynamic influence on drillpipe statics and dynamics.

Effects of Flow-Pipe Interaction on Drill Pipe Buckling and Dynamics

2003 ◽  
Author(s):  
Qun Zhang ◽  
Stefan Miska
Keyword(s):  
Theoretical Model ◽  
Theoretical Study ◽  
Drilling Fluid ◽  
Drill Pipe ◽  
Neutral Zone ◽  
Lateral Vibration ◽  
Interaction Forces ◽  
Numerical Examples ◽  
Statics And Dynamics ◽  
Hydrodynamic Influence

A theoretical study has been performed on the buckling and lateral vibration of drillpipe interacted with incompressible fluid in vertical holes. Particular attention is paid to the flow-pipe interaction near drillpipe neutral zone. A new theoretical model has been established. The flow-pipe interaction forces are characterized in this model. Dimensional analysis has been conducted to generalize this model. An innovative numerical method has been developed to solve the eigensystem. Several numerical examples are provided to show the effects of flow-pipe interaction on drillpipe buckling and dynamics. Results show that drilling fluid has significant hydrodynamic influence on drillpipe statics and dynamics.

Nonlinear Analysis of L-shaped Pipe Conveying Fluid with the Aid of Absolute Nodal Coordinate Formulation

2021 ◽  
Author(s):  
K. Zhou ◽  
H.R. Yi ◽  
Huliang Dai ◽  
H Yan ◽  
Z.L. Guo ◽  
...  
Keyword(s):  
Theoretical Model ◽  
Flow Velocity ◽  
Absolute Nodal Coordinate Formulation ◽  
Strong Relationship ◽  
Excitation Amplitude ◽  
Pipe Conveying Fluid ◽  
Base Excitation ◽  
Absolute Nodal Coordinate ◽  
Nonlinear Behaviors ◽  
Conveying Fluid

Abstract By adopting the absolute nodal coordinate formulation, a novel and general nonlinear theoretical model, which can be applied to solve the dynamics of combined straight-curved fluid-conveying pipes with arbitrary initially configurations and any boundary conditions, is developed in the current study. Based on this established model, the nonlinear behaviors of the cantilevered L-shaped pipe conveying fluid with and without base excitations are systematically investigated. Before starting the research, the developed theoretical model is verified by performing three validation examples. Then, with the aid of this model, the static deformations, linear stability, and nonlinear self-excited vibrations of the L-shaped pipe without the base excitation are determined. It is found that the cantilevered L-shaped pipe suffers from the static deformations when the flow velocity is subcritical, and will undergo the limit-cycle motions as the flow velocity exceeds the critical value. Subsequently, the nonlinear forced vibrations of the pipe with a base excitation are explored. It is indicated that the period-n, quasi-periodic and chaotic responses can be detected for the L-shaped pipe, which has a strong relationship with the flow velocity, excitation amplitude and frequency.

scholarly journals Lateral vibration of a flexible pipe conveying fluid with pulsating flow.

1985 ◽  
Vol 51 (471) ◽  
pp. 2828-2836
Author(s):  
Masatsugu YOSHIZAWA ◽  
Eiji HASEGAWA ◽  
Hiroyoshi NAO ◽  
Yasushi TSUJIOKA
Keyword(s):  
Pulsating Flow ◽  
Pipe Conveying Fluid ◽  
Lateral Vibration ◽  
Flexible Pipe ◽  
Conveying Fluid

scholarly journals Lateral vibration of a flexible pipe conveying fluid.

1986 ◽  
Vol 52 (474) ◽  
pp. 710-717
Author(s):  
Masatsugu YOSHIZAWA ◽  
Eiichiro MORITANI ◽  
Eiji HASEGAWA ◽  
Yasushi TSUJIOKA
Keyword(s):  
Pipe Conveying Fluid ◽  
Lateral Vibration ◽  
Flexible Pipe ◽  
Conveying Fluid

Nonplanar Vibration of a Vertical Fluid-Conveying Pipe (Effect of Horizontal Excitation at the Upper End)

2014 ◽  
Vol 136 (4) ◽  
Author(s):  
Kiyotaka Yamashita ◽  
Hiroaki Furuya ◽  
Hiroshi Yabuno ◽  
Masatsugu Yoshizawa
Keyword(s):  
Limit Cycle ◽  
Excitation Frequency ◽  
Horizontal Direction ◽  
Pipe Conveying Fluid ◽  
Lateral Vibration ◽  
Ccd Cameras ◽  
Cycle Frequency ◽  
Excited Vibration ◽  
Nonplanar Vibration ◽  
Conveying Fluid

Nonlinear and nonplanar lateral vibration of a self-excited vertical cantilevered pipe conveying fluid is studied for the case that the upper end of the pipe is periodically excited in the horizontal direction. The modulation equations, which are coupled with nonlinear terms and govern the amplitudes and phases of nonplanar vibration, are analytically derived. When the excitation frequency is near the nonplanar limit cycle frequency, the nonplanar self-excited vibration is quenched to the excitation, and the amplitude of lateral vibration in the direction perpendicular to the horizontal excitation is decreased. Experiments were conducted and spatial pipe behaviors were observed using two CCD cameras. The theoretically predicted effects of horizontal excitation were confirmed qualitatively.

scholarly journals Lateral Vibration of a Flexible Pipe Conveying Fluid with Pulsating Flow

1986 ◽  
Vol 29 (253) ◽  
pp. 2243-2250 ◽  
Author(s):  
Masatsugu YOSHIZAWA ◽  
Hiroyoshi NAO ◽  
Eiji HASEGAWA ◽  
Yasushi TSUJIOKA
Keyword(s):  
Pulsating Flow ◽  
Pipe Conveying Fluid ◽  
Lateral Vibration ◽  
Flexible Pipe ◽  
Conveying Fluid
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