Numerical investigation of pressure transient responses of a well penetrating a deep geothermal reservoir at super-critical conditions

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Numerical simulations were carried out to predict pressure transients in a hypothetical deep geothermal well which penetrates a reservoir at super-critical conditions. Production at about 4000 m depth was assumed. In many cases, two-phase conditions develop due to high temperature and production-induced pressure decrease. Several cases in which single-phase conditions are maintained were studied in detail. Pressure transients are influenced by the reservoir temperature distribution - in particular, a temperature distribution with subcritical conditions at the well but supercritical conditions farther away causes a characteristic nonlinear pressure response whlch is influenced by the large compressibility and small kinematic viscosity near ... continued below

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107-112

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Yano, Yusaku & Ishido, Tsuneo January 24, 1996.

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Description

Numerical simulations were carried out to predict pressure transients in a hypothetical deep geothermal well which penetrates a reservoir at super-critical conditions. Production at about 4000 m depth was assumed. In many cases, two-phase conditions develop due to high temperature and production-induced pressure decrease. Several cases in which single-phase conditions are maintained were studied in detail. Pressure transients are influenced by the reservoir temperature distribution - in particular, a temperature distribution with subcritical conditions at the well but supercritical conditions farther away causes a characteristic nonlinear pressure response whlch is influenced by the large compressibility and small kinematic viscosity near the critical point.

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107-112

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  • Proceedings, Twenty-First Workshop on Geothermal Reservoir Engineering, Stanford University, Stanford, CA, January 22-24, 1996

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  • Report No.: SGP-TR-151-16
  • Grant Number: None
  • Office of Scientific & Technical Information Report Number: 889733
  • Archival Resource Key: ark:/67531/metadc884733

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  • January 24, 1996

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  • Sept. 21, 2016, 2:29 a.m.

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  • Nov. 30, 2016, 1:39 p.m.

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Yano, Yusaku & Ishido, Tsuneo. Numerical investigation of pressure transient responses of a well penetrating a deep geothermal reservoir at super-critical conditions, article, January 24, 1996; United States. (digital.library.unt.edu/ark:/67531/metadc884733/: accessed January 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.