Flow of drilling fluids in eccentric annuli

Document Type

Article

Publication Date

8-1-1998

Abstract

The effect of pipe eccentricity on the flow of well bore fluids in annuli is investigated both analytically and experimentally. The expression for azimuthal velocity as a function of the eccentricity ratio and rheological parameters of the fluid was obtained analytically using a linear fluidity model. Velocity profiles were measured for a Newtonian glycerol/water mixture and a non-Newtonian oil field spacer fluid in eccentric annuli using the stroboscopic flow visualization method. Measured velocity profiles in the eccentric annulus compare well to analytical predictions.

Identifier

0032144078 (Scopus)

Publication Title

Journal of Non Newtonian Fluid Mechanics

External Full Text Location

https://doi.org/10.1016/S0377-0257(97)00101-8

ISSN

03770257

First Page

119

Last Page

132

Issue

2-3

Volume

78

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