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Invasion around a horizontal wellbore

Published online by Cambridge University Press:  01 February 2008

V. V. SHELUKHIN
V. V. SHELUKHIN*
Affiliation:
Lavrentyev Institute of Hydrodynamics, Lavrentyev pr. 15, Novosibirsk 630090, Russia email: shelukhin@hydro.nsc.ru
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Abstract

A mathematical model is developed for mud cake growth and fluid invasion around a horizontal wellbore during drilling. The non-axisymmetry of the invasion front is addressed for the case of water based drilling mud and isotropic rock formation. It is shown that the invasion profile may lose convexity due to gravitation even though the filtrate density is the same as that of the pore fluid in the rock.

Type
Papers
Information
European Journal of Applied Mathematics , Volume 19 , Issue 1 , February 2008 , pp. 41 - 60
Copyright
Copyright © Cambridge University Press 2008

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