Study of desorption in a vapor dominated reservoir with fractal geometry

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This paper is an attempt to model well decline in a vapor dominated reservoir with fractal geometry. The fractal network of fractures is treated as a continuum with characteristic anomalous diffusion of pressure. A numerical solver is used to obtain the solution of the partial differential equation including adsorption in the fractal storage space. The decline of the reservoir is found to obey the empirical hyperbolic type relation when adsorption is not present. Desorption does not change the signature of the flow rate decline but shifts it on the time/flow rate axis. Only three out of six model parameters can ... continued below

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175-181

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Tudor, Monica; Horne, Roland N. & Hewett, Thomas A. January 26, 1995.

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Description

This paper is an attempt to model well decline in a vapor dominated reservoir with fractal geometry. The fractal network of fractures is treated as a continuum with characteristic anomalous diffusion of pressure. A numerical solver is used to obtain the solution of the partial differential equation including adsorption in the fractal storage space. The decline of the reservoir is found to obey the empirical hyperbolic type relation when adsorption is not present. Desorption does not change the signature of the flow rate decline but shifts it on the time/flow rate axis. Only three out of six model parameters can be estimated from field data, due to the linear correlation between parameters. An application to real well data from The Geysers field is presented together with the estimated reservoir, fractal space and adsorption parameters. Desorption dominated flow is still a questionable approximation for flow in fractal objects.

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175-181

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  • Proceedings, Twentieth Workshop on Geothermal Reservoir Engineering, Stanford University, Stanford, CA, January 24-26, 1995

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  • Report No.: SGP-TR-150-24
  • Grant Number: None
  • Office of Scientific & Technical Information Report Number: 889383
  • Archival Resource Key: ark:/67531/metadc884768

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  • January 26, 1995

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  • Sept. 21, 2016, 2:29 a.m.

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  • Dec. 7, 2016, 10:33 p.m.

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Tudor, Monica; Horne, Roland N. & Hewett, Thomas A. Study of desorption in a vapor dominated reservoir with fractal geometry, article, January 26, 1995; United States. (digital.library.unt.edu/ark:/67531/metadc884768/: accessed September 25, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.