Browse > Article

A Study on the Flow of Drilling Fluids in Slim hole Annuli  

Seo Byung-Taek (Graduated School of Mechanical Engineering, Sungkyunkwan University)
Woo Nam-Sub (Graduated School of Mechanical Engineering, Sungkyunkwan University)
Hwang Young-Kyu (School of Mechanical Engineering, Sungkyunkwan University)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.18, no.4, 2006 , pp. 370-376 More about this Journal
Abstract
The paper concerns an experimental study of fully developed laminar flow of a Newtonian and non-Newtonian liquid in concentric annuli with combined bulk axial flow and inner cylinder rotation. Pressure losses and skin friction coefficients have been measured for Newtonian fluid, water and non-Newtonian fluids, 0.2% aqueous of sodium carboxymethyl cellulose (CMC) and 5% bentonite solutions, when the inner cylinder rotates at the speed of $0{\sim}500$ rpm. The influences of rotation, radius ratio and working fluid on the annular flow field are investigated. And the new correlations among the skin friction coefficient, the Reynolds number and the Rossby number are presented with reasonable limits of accuracy in laminar flow regime.
Keywords
Slim hole annulus; Skin friction coefficient; Radius ratio; Rossby number;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Richard, E. W. and Othmen, A.-R., 1970, Helical Flow of Bentonite Slurries, SPE. 3108
2 Shah, R. K. and London, A L., 1978, Laminar Flow Forced Convection in Ducts, Academic Press, New York
3 Delwiehe, R. A, Lejeune, M. W. D. and Stratabit, D. B., 1992, Slimhole Drilling Hydraulics, Society of Petroleum Engineers Inc., SPE 24596, pp. 521-541
4 Hwang, Y. K. and Kim, Y. J., 2002, Helical low study on non-Newtonian fluid in an inclined annulus with rotating inner cylinder, Proc. of the KSME, pp. 1944-1949
5 Nouri, J. M. and Whitelaw, J. H., 1994, Flow of Newtonian and non-Newtonian fluids in a concentric annulus with rotation of the inner cylinder, J. Fluids Eng., Vol. 116, pp. 821-827   DOI   ScienceOn
6 Dodge, D. W. and Metzner, A B., 1959, Turbulent flow of non-Newtonian system, J. Am. Inst. Chem Eng., Vol. 5, No. 2, pp. 198-204
7 Escudier, M. P. and Gouldson, I. W., 1995, Concentric annular flow with centerbody rotation of a Newtonian and a shear-thinning liquid, Int. J. Heat and Fluid Flow., Vol. 16, pp. 156-162   DOI   ScienceOn
8 Pinho, F. T. and Whitelaw, J. H., 1990, Flow of non-Newtonian fluids in a pipe, Int. J. of Non-Newtonian Fluid Mech., Vol. 34, pp.129-144   DOI   ScienceOn
9 Pearson, J. R. A, 1988, Rheological principles and measurements applied to the problems of drilling and completing oil wells, Proceding of the Xth International Congress on Rheology, Sydney, Vol. 1, pp.73-78