International Science Index


16519

CFD Simulation of the Hydrodynamic Vibrator for Stuck - Pipe Liquidation

Abstract:

Stuck-pipe in drilling operations is one of the most pressing and expensive problems in the oil industry. This paper describes a computational simulation and an experimental study of the hydrodynamic vibrator, which may be used for liquidation of stuck-pipe problems during well drilling. The work principle of the vibrator is based upon the known phenomena of Vortex Street of Karman and the resulting generation of vibrations. We will discuss the computational simulation and experimental investigations of vibrations in this device. The frequency of the vibration parameters has been measured as a function of the wide range Reynolds Number. The validity of the computational simulation and of the assumptions on which it is based has been proved experimentally. The computational simulation of the vibrator work and its effectiveness was carried out using FLUENT software. The research showed high degree of congruence with the results of the laboratory tests and allowed to determine the effect of the granular material features upon the pipe vibration in the well. This study demonstrates the potential of using the hydrodynamic vibrator in a well drilling system.

References:


[1] Bowes, C., Procter, R., Drillers Stuck Pipe Handbook (Procter & Colins Ltd. Scotland, 1997)
[2] Moon Francis. C., Chaotic Vibrations.(John Wiley & Sons, 1987)
[3] Fradkov A. L., Pogromsky A. Yu., An Introduction to Control of Oscillations and Chaos. (World Scientific Series On Nonlinear Science, 1998)
[4] Blevins, R.D., Flow – Induced Vibration. (Kreiger, Malibar, Fla., 1994)
[5] Grinis L., Korin E., “Hydrodynamic method for cleaning inner surfaces of pipes” Chem. Eng. Technol. 20, N4, 277-281(1997)
[6] Constantinescu, G, Chapelet, M, and Squires, K (2003). “Turbulence Modeling Applied to Flow over a Sphere”. AIAA Journal, Vol. 41, No. 9, pp.1733-1742.
[7] Constantinescu, G, (2004) ” Numerical investigations of flow over a sphere in the subcritical and supercritical regimes” J. Physics of Fluids, Vol. 16, No., 5, pp.1449-1466.