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Title: Simulations studies for wells AH-4bis/AH-17 and AH-18, Ahuachapan Geothermal Field

Abstract

Well AH-4{sub bis} at the Ahuachapan Geothermal Field is planned to be drilled on the same pad as the former AH-4. A simulation study was carried out for two casing diameters 13 5/8 and 9 5/8 inches in order to estimate its production and to know its economic feasibility. The simulation results indicate a high probability of production in the range of 7 Mwe, equivalent to 120 kg/s total mass flow rate, 1250 kJ/kg at 6 bar-a for the new well AH-4b{sub bis}. Well AH-17 is good producer, during 1991 after ten years of production, the well was shut-in due to silica scaling problems. A wellbore simulation was carried out in order to predict the new production conditions after the work-over, mainly to estimate the water flow rate in order to reduce the silica scaling. The results indicate a very low water flow rate. The match between the simulated and measured production curves after the work-over was successful. The well AH-18 is located at the southern part of the actual bore field. CEL is planning to expand the borefield at this area and it is necessary to estimate the possible production conditions at that zone. The results indicate a highmore » probability of production at that area. The power potential is estimated at 3.5 Mwe per well at WHP 6 bar-a and the wells will not require induction.« less

Authors:
 [1]
  1. Recursos Geotermicos Comision Ejecutiva Hidroelectrica del Rio Lempa CEL, San Salvador (El Salvador)
Publication Date:
OSTI Identifier:
472064
Report Number(s):
CONF-960124-
TRN: 96:005767-0015
Resource Type:
Conference
Resource Relation:
Conference: 21. Stanford workshop on geothermal reservoir engineering, Stanford, CA (United States), 22-24 Jan 1996; Other Information: PBD: 1996; Related Information: Is Part Of Proceedings of the twenty-first workshop on geothermal reservoir engineering; PB: 595 p.
Country of Publication:
United States
Language:
English
Subject:
15 GEOTHERMAL ENERGY; AHUACHAPAN GEOTHERMAL FIELD; RESERVOIR ENGINEERING; GEOLOGIC MODELS; WELL DRILLING; EL SALVADOR; GEOTHERMAL RESOURCES

Citation Formats

Monterrosa, M.E. Simulations studies for wells AH-4bis/AH-17 and AH-18, Ahuachapan Geothermal Field. United States: N. p., 1996. Web.
Monterrosa, M.E. Simulations studies for wells AH-4bis/AH-17 and AH-18, Ahuachapan Geothermal Field. United States.
Monterrosa, M.E. Tue . "Simulations studies for wells AH-4bis/AH-17 and AH-18, Ahuachapan Geothermal Field". United States. doi:.
@article{osti_472064,
title = {Simulations studies for wells AH-4bis/AH-17 and AH-18, Ahuachapan Geothermal Field},
author = {Monterrosa, M.E.},
abstractNote = {Well AH-4{sub bis} at the Ahuachapan Geothermal Field is planned to be drilled on the same pad as the former AH-4. A simulation study was carried out for two casing diameters 13 5/8 and 9 5/8 inches in order to estimate its production and to know its economic feasibility. The simulation results indicate a high probability of production in the range of 7 Mwe, equivalent to 120 kg/s total mass flow rate, 1250 kJ/kg at 6 bar-a for the new well AH-4b{sub bis}. Well AH-17 is good producer, during 1991 after ten years of production, the well was shut-in due to silica scaling problems. A wellbore simulation was carried out in order to predict the new production conditions after the work-over, mainly to estimate the water flow rate in order to reduce the silica scaling. The results indicate a very low water flow rate. The match between the simulated and measured production curves after the work-over was successful. The well AH-18 is located at the southern part of the actual bore field. CEL is planning to expand the borefield at this area and it is necessary to estimate the possible production conditions at that zone. The results indicate a high probability of production at that area. The power potential is estimated at 3.5 Mwe per well at WHP 6 bar-a and the wells will not require induction.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Dec 31 00:00:00 EST 1996},
month = {Tue Dec 31 00:00:00 EST 1996}
}

Conference:
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