Analysis of Production Data from the Krafla Geothermal Field, Iceland
The Krafla geothermal field in northeastern Iceland consists of several zones, which contain fluids of different composition and thermodynamic state (Stefansson, 1981). In this paper they examine production data from wells which are completed in two-phase zones. Transient changes in flow rate and fl...
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ftosti:oai:osti.gov:889737 2023-07-30T04:04:21+02:00 Analysis of Production Data from the Krafla Geothermal Field, Iceland Pruess, K. Bodvarsson, G.S. Stefansson, V. 2006-12-18 application/pdf http://www.osti.gov/servlets/purl/889737 https://www.osti.gov/biblio/889737 unknown http://www.osti.gov/servlets/purl/889737 https://www.osti.gov/biblio/889737 02 PETROLEUM 15 GEOTHERMAL ENERGY ENTHALPY FLOW RATE FRACTURED RESERVOIRS ICELAND KRAFLA GEOTHERMAL FIELD PERMEABILITY PRODUCTION RESERVOIR ENGINEERING THERMODYNAMICS TRANSIENTS 2006 ftosti 2023-07-11T08:43:36Z The Krafla geothermal field in northeastern Iceland consists of several zones, which contain fluids of different composition and thermodynamic state (Stefansson, 1981). In this paper they examine production data from wells which are completed in two-phase zones. Transient changes in flow rate and flowing enthalpy are analyzed to obtain insight into relative (liquid and gas phase) permeabilities, and other reservoir parameters. Numerous studies have shown that predictions of geothermal reservoir behavior are strongly dependent upon the choice of relative permeability functions. There is an extensive literature on gas-oil and oil-water relative permeabilities, but steam-water relative permeabilities which are needed for geothermal reservoir analysis are poorly known. Laboratory experiments by Chen et al. (1978) and Counsil and Ramey (1979) have provided some data which, however, seem to be at variance with relative permeability characteristics deduced from field data by Grant (1977) and Horne and Ramey (1978). The differences may reflect uncertainties in the analysis methods used, or they may reflect ''real'' differences in relative permeability behavior of fractured reservoirs from that of porous medium-type laboratory cores. Recent theoretical work by Menzies (1982) and Gudmundsson et al. (1983) has substantiated the relative permeability characteristics obtained by Horne and Ramey (1978) for Wairakei wells. Other/Unknown Material Iceland SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) Krafla ENVELOPE(-16.747,-16.747,65.713,65.713) Menzies ENVELOPE(61.911,61.911,-73.437,-73.437) Stefansson ENVELOPE(-62.417,-62.417,-69.467,-69.467) Horne ENVELOPE(8.098,8.098,62.640,62.640) |
institution |
Open Polar |
collection |
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
op_collection_id |
ftosti |
language |
unknown |
topic |
02 PETROLEUM 15 GEOTHERMAL ENERGY ENTHALPY FLOW RATE FRACTURED RESERVOIRS ICELAND KRAFLA GEOTHERMAL FIELD PERMEABILITY PRODUCTION RESERVOIR ENGINEERING THERMODYNAMICS TRANSIENTS |
spellingShingle |
02 PETROLEUM 15 GEOTHERMAL ENERGY ENTHALPY FLOW RATE FRACTURED RESERVOIRS ICELAND KRAFLA GEOTHERMAL FIELD PERMEABILITY PRODUCTION RESERVOIR ENGINEERING THERMODYNAMICS TRANSIENTS Pruess, K. Bodvarsson, G.S. Stefansson, V. Analysis of Production Data from the Krafla Geothermal Field, Iceland |
topic_facet |
02 PETROLEUM 15 GEOTHERMAL ENERGY ENTHALPY FLOW RATE FRACTURED RESERVOIRS ICELAND KRAFLA GEOTHERMAL FIELD PERMEABILITY PRODUCTION RESERVOIR ENGINEERING THERMODYNAMICS TRANSIENTS |
description |
The Krafla geothermal field in northeastern Iceland consists of several zones, which contain fluids of different composition and thermodynamic state (Stefansson, 1981). In this paper they examine production data from wells which are completed in two-phase zones. Transient changes in flow rate and flowing enthalpy are analyzed to obtain insight into relative (liquid and gas phase) permeabilities, and other reservoir parameters. Numerous studies have shown that predictions of geothermal reservoir behavior are strongly dependent upon the choice of relative permeability functions. There is an extensive literature on gas-oil and oil-water relative permeabilities, but steam-water relative permeabilities which are needed for geothermal reservoir analysis are poorly known. Laboratory experiments by Chen et al. (1978) and Counsil and Ramey (1979) have provided some data which, however, seem to be at variance with relative permeability characteristics deduced from field data by Grant (1977) and Horne and Ramey (1978). The differences may reflect uncertainties in the analysis methods used, or they may reflect ''real'' differences in relative permeability behavior of fractured reservoirs from that of porous medium-type laboratory cores. Recent theoretical work by Menzies (1982) and Gudmundsson et al. (1983) has substantiated the relative permeability characteristics obtained by Horne and Ramey (1978) for Wairakei wells. |
author |
Pruess, K. Bodvarsson, G.S. Stefansson, V. |
author_facet |
Pruess, K. Bodvarsson, G.S. Stefansson, V. |
author_sort |
Pruess, K. |
title |
Analysis of Production Data from the Krafla Geothermal Field, Iceland |
title_short |
Analysis of Production Data from the Krafla Geothermal Field, Iceland |
title_full |
Analysis of Production Data from the Krafla Geothermal Field, Iceland |
title_fullStr |
Analysis of Production Data from the Krafla Geothermal Field, Iceland |
title_full_unstemmed |
Analysis of Production Data from the Krafla Geothermal Field, Iceland |
title_sort |
analysis of production data from the krafla geothermal field, iceland |
publishDate |
2006 |
url |
http://www.osti.gov/servlets/purl/889737 https://www.osti.gov/biblio/889737 |
long_lat |
ENVELOPE(-16.747,-16.747,65.713,65.713) ENVELOPE(61.911,61.911,-73.437,-73.437) ENVELOPE(-62.417,-62.417,-69.467,-69.467) ENVELOPE(8.098,8.098,62.640,62.640) |
geographic |
Krafla Menzies Stefansson Horne |
geographic_facet |
Krafla Menzies Stefansson Horne |
genre |
Iceland |
genre_facet |
Iceland |
op_relation |
http://www.osti.gov/servlets/purl/889737 https://www.osti.gov/biblio/889737 |
_version_ |
1772815713635926016 |