Measurement of injectivity indexes in geothermal wells with two permeable zones

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Description

Injectivity tests in wells with two permeable zones and internal flow is analyzed in order to include the usually severe thermal transient effects. A theoretical analysis is performed and a method devised to obtain information from the thermal transient, provided that temperature is measured simultaneously with pressure. The technique is illustrated with two real tests performed at Miravalles, Costa Rica. It allows to estimate total injectivity index as well as the injectivity index of each one of the two zones separately. Correct position of measuring tools and nature of spontaneous internal flow is also discussed.

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21-26

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Acuna, Jorge A. January 20, 1994.

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Description

Injectivity tests in wells with two permeable zones and internal flow is analyzed in order to include the usually severe thermal transient effects. A theoretical analysis is performed and a method devised to obtain information from the thermal transient, provided that temperature is measured simultaneously with pressure. The technique is illustrated with two real tests performed at Miravalles, Costa Rica. It allows to estimate total injectivity index as well as the injectivity index of each one of the two zones separately. Correct position of measuring tools and nature of spontaneous internal flow is also discussed.

Physical Description

21-26

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  • Proceedings, nineteenth workshop on geothermal reservoir engineering, Stanford University, Stanford, CA, January 18-20, 1994

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  • Report No.: SGP-TR-147-4
  • Grant Number: None
  • Office of Scientific & Technical Information Report Number: 889115
  • Archival Resource Key: ark:/67531/metadc876567

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Office of Scientific & Technical Information Technical Reports

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  • January 20, 1994

Added to The UNT Digital Library

  • Sept. 21, 2016, 2:29 a.m.

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  • Nov. 29, 2016, 7:37 p.m.

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Acuna, Jorge A. Measurement of injectivity indexes in geothermal wells with two permeable zones, article, January 20, 1994; United States. (digital.library.unt.edu/ark:/67531/metadc876567/: accessed September 24, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.