Automatic history matching of geothermal field performance

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We have developed inverse modeling capabilities for the multiphase multicomponent numerical simulator TOUGH2 to facilitate automatic history matching, and parameter estimation based on data obtained during exploitation of Geothermal fields. The ITOUGH2 code allows one to estimate TOUGH2 input parameters based on any type of observation for which a corresponding TOUGH2 output can be calculated. Furthermore, a detailed residual and error analysis is performed, and the uncertainty of model predictions can be evaluated. This paper focuses on the solution of the inverse; problem, i.e. the determination of model-related parameters by automatically calibrating a conceptual model of the Geothermal system against ... continued below

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7 p.

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Finsterle, S. & Pruess, K> August 1, 1995.

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Description

We have developed inverse modeling capabilities for the multiphase multicomponent numerical simulator TOUGH2 to facilitate automatic history matching, and parameter estimation based on data obtained during exploitation of Geothermal fields. The ITOUGH2 code allows one to estimate TOUGH2 input parameters based on any type of observation for which a corresponding TOUGH2 output can be calculated. Furthermore, a detailed residual and error analysis is performed, and the uncertainty of model predictions can be evaluated. This paper focuses on the solution of the inverse; problem, i.e. the determination of model-related parameters by automatically calibrating a conceptual model of the Geothermal system against data obtained during field operation. We first describe the modeling, approach used to simulate fluid and heat flow in fractured-porous media. The inverse problem is then formulated, followed by a brief discussion of the optimization algorithm. A sample problem is given to demonstrate the application of the method to Geothermal reservoir data.

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7 p.

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OSTI as DE96001121

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  • 17. New Zealand geothermal workshop: human resources in geothermal development, Auckland (New Zealand), 8-10 Nov 1995

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  • Other: DE96001121
  • Report No.: LBL--37611
  • Report No.: CONF-951176--1
  • Grant Number: AC03-76SF00098
  • Office of Scientific & Technical Information Report Number: 114667
  • Archival Resource Key: ark:/67531/metadc621001

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  • August 1, 1995

Added to The UNT Digital Library

  • June 16, 2015, 7:43 a.m.

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  • April 4, 2016, 9:04 p.m.

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Finsterle, S. & Pruess, K>. Automatic history matching of geothermal field performance, article, August 1, 1995; California. (digital.library.unt.edu/ark:/67531/metadc621001/: accessed September 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.