Deliverability and its Effect on Geothermal Power Costs

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The deliverability of liquid-dominated geothermal reservoirs is presented in terms of reservoir performance, and wellbore performance. Water influx modeling is used to match the performance of Wairakei in New Zealand, arid Ahuachapan in El Salvador. The inflow performance is given in terms of a linear productivity index for liquid-only flow, and a solution-gas drive relationship for two-phase flow. A 9-5/8'' production well is assumed, flowing 250 C water from 900 m depth, with a wellhead pressure of 100 psia. A Geothermal Development Model, that couples reservoir deliverability and power plant performance, and assigns costs to both, is used to illustrate ... continued below

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217-222

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Gudmundsson, J.S. & Marcou, J.A. January 21, 1986.

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Description

The deliverability of liquid-dominated geothermal reservoirs is presented in terms of reservoir performance, and wellbore performance. Water influx modeling is used to match the performance of Wairakei in New Zealand, arid Ahuachapan in El Salvador. The inflow performance is given in terms of a linear productivity index for liquid-only flow, and a solution-gas drive relationship for two-phase flow. A 9-5/8'' production well is assumed, flowing 250 C water from 900 m depth, with a wellhead pressure of 100 psia. A Geothermal Development Model, that couples reservoir deliverability and power plant performance, and assigns costs to both, is used to illustrate how the development cost of geothermal electric power projects can be estimated.

Physical Description

217-222

Source

  • Proceedings, Eleventh Workshop Geothermal Reservoir Engineering, Stanford University, Stanford, California, January 21-23, 1986

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  • Report No.: SGP-TR-93-31
  • Grant Number: AS03-80SF11459
  • Grant Number: AS07-84ID12529
  • Office of Scientific & Technical Information Report Number: 887146
  • Archival Resource Key: ark:/67531/metadc885460

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  • January 21, 1986

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  • Sept. 21, 2016, 2:29 a.m.

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  • Nov. 23, 2016, 12:38 p.m.

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Gudmundsson, J.S. & Marcou, J.A. Deliverability and its Effect on Geothermal Power Costs, article, January 21, 1986; United States. (digital.library.unt.edu/ark:/67531/metadc885460/: accessed August 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.