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A fast inverse solver for the filtration function for flow of water with particles in porous media

A C Alvarez1,2, P G Bedrikovetsky3, G Hime1,4, A O Marchesin5, D Marchesin1 and J R Rodrigues6

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Models for deep bed filtration in the injection of seawater with solid inclusions depend on an empirical filtration function that represents the rate of particle retention. This function must be calculated indirectly from experimental measurements of other quantities. The practical petroleum engineering purpose is to predict injectivity loss in the porous rock around wells. In this work, we determine the filtration function from the effluent particle concentration history measured in laboratory tests knowing the inlet particle concentration. The recovery procedure is based on solving a functional equation derived from the model equations. Well-posedness of the numerical procedure is discussed. Numerical results are shown.


PACS

47.56.+r Flows through porous media

61.72.Qq Microscopic defects (voids, inclusions, etc.)

02.60.-x Numerical approximation and analysis

02.30.Hq Ordinary differential equations

MSC

76S05 Flows in porous media; filtration; seepage

76B03 Existence, uniqueness, and regularity theory (See also 35Q35)

49K40 Sensitivity, stability, well-posedness (See also 90C31)

Subjects

Fluid dynamics

Mathematical physics

Computational physics

Condensed matter: structural, mechanical & thermal

Dates

Issue 1 (February 2006)

Received 14 July 2005, in final form 8 November 2005

Published 22 December 2005



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