Identification of the Permeability Field of Porous Medium from the Injection of Passive Tracer

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In this paper, a method was proposed which focused on the question, namely on how to invert data on arrival times at various (and numerous) points in the porous medium to map the permeability field. The method, elements of which were briefly described in (9), is based on a direct inversion of the data, as will be described below , rather than on the optimization of initial random (or partly constrained) guesses of the permeability field, to match the available data, as typically done in the analogous problem of pressure transients. The direct inversion is based on two conditions, that ... continued below

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36 p.

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Zhan, Lang & Yortsos, Y.C. October 18, 1999.

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This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 14 times . More information about this report can be viewed below.

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Description

In this paper, a method was proposed which focused on the question, namely on how to invert data on arrival times at various (and numerous) points in the porous medium to map the permeability field. The method, elements of which were briefly described in (9), is based on a direct inversion of the data, as will be described below , rather than on the optimization of initial random (or partly constrained) guesses of the permeability field, to match the available data, as typically done in the analogous problem of pressure transients. The direct inversion is based on two conditions, that Darcy's law for single-phase flow in porous media is valid, and that dispersion of the concentration of the injected tracer is negligible. While the former is a well-accepted premise, the latter depends on injection and field conditions, and may not necessarily apply in all cases. Based on these conditions, we formulate a nonlinear boundary value problem, the coefficients of which depend on the experimental arrival time data.

Physical Description

36 p.

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OSTI as DE00013827

Medium: P; Size: 36 pages

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  • Other Information: PBD: 18 Oct 1999

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  • Report No.: DOE/BC-15211-1
  • Grant Number: AC26-99BC15211
  • DOI: 10.2172/13827 | External Link
  • Office of Scientific & Technical Information Report Number: 13827
  • Archival Resource Key: ark:/67531/metadc621895

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  • October 18, 1999

Added to The UNT Digital Library

  • June 16, 2015, 7:43 a.m.

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  • April 12, 2017, 2:11 p.m.

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Zhan, Lang & Yortsos, Y.C. Identification of the Permeability Field of Porous Medium from the Injection of Passive Tracer, report, October 18, 1999; Tulsa, Oklahoma. (digital.library.unt.edu/ark:/67531/metadc621895/: accessed September 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.