Thermal consolidation in a vapor-dominated reservoir

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Thermal consolidation due to vapor production from a vapor-dominated geothermal reservoir with natural recharge from an overlying liquid layer is examined. When the vapor is extracted, the pressure declines and the liquid vaporizes as the liquid layer descends into the vapor zone. It is shown that the flow-induced pressure change is comparable to the hydrostatic profile for a typical production rate and that the subsidence is mainly from thermal compaction in the liquidinvaded zone. The total subsidence in the reservoir increases as the production rate increases but decreases as porosity decreases. The permeability variation only affects the reservoir life in ... continued below

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119-126

Creation Information

Lee, Cheo K. & Toksoz, M. Nafi January 24, 1996.

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Description

Thermal consolidation due to vapor production from a vapor-dominated geothermal reservoir with natural recharge from an overlying liquid layer is examined. When the vapor is extracted, the pressure declines and the liquid vaporizes as the liquid layer descends into the vapor zone. It is shown that the flow-induced pressure change is comparable to the hydrostatic profile for a typical production rate and that the subsidence is mainly from thermal compaction in the liquidinvaded zone. The total subsidence in the reservoir increases as the production rate increases but decreases as porosity decreases. The permeability variation only affects the reservoir life in such a manner that the processes are inversely proportional to the permeability change.

Physical Description

119-126

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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-151-18
  • Grant Number: None
  • Office of Scientific & Technical Information Report Number: 889738
  • Archival Resource Key: ark:/67531/metadc876882

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  • January 24, 1996

Added to The UNT Digital Library

  • Sept. 21, 2016, 2:29 a.m.

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  • Dec. 2, 2016, 3:27 p.m.

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Lee, Cheo K. & Toksoz, M. Nafi. Thermal consolidation in a vapor-dominated reservoir, article, January 24, 1996; United States. (digital.library.unt.edu/ark:/67531/metadc876882/: accessed September 26, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.