Control diagenètico sobre la porosidad y permeabilidad en areniscas-almacén cretácicas (área Salam, Western Desert, Egipto)

Pelrographic analysis of core samples of reservoir sandstones from the Sa/am Field show that porosity and permeability are strongly influenced by diagenesis. The studied sandstones can be subdivided into two populations that reflect major differences In the origin of porosity and in the diagenetic e...

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Detalles Bibliográficos
Autores: Rossi, C., Marfil Pérez, Rafaela, Permanyer, Albert
Tipo de recurso: artículo
Fecha de publicación:1996
País:España
Institución:Universidad de Huelva (UHU)
Repositorio:Arias Montano. Repositorio Institucional de la Universidad de Huelva
Idioma:español
OAI Identifier:oai:ariasmontano.uhu.es:10272/11365
Acceso en línea:http://hdl.handle.net/10272/11365
Access Level:acceso abierto
Palabra clave:Reservoir quality
Sandstone diagenesis
Primary porosity
Secondary porosity
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spelling Control diagenètico sobre la porosidad y permeabilidad en areniscas-almacén cretácicas (área Salam, Western Desert, Egipto)Diagenetic control on porosity and permeability in Cretaceous reservoir sandstones (Salam area, Western Desert, Egypt)Rossi, C.Marfil Pérez, RafaelaPermanyer, AlbertReservoir qualitySandstone diagenesisPrimary porositySecondary porosityPelrographic analysis of core samples of reservoir sandstones from the Sa/am Field show that porosity and permeability are strongly influenced by diagenesis. The studied sandstones can be subdivided into two populations that reflect major differences In the origin of porosity and in the diagenetic evolution: (1) Sandstones with dominance of primary intergranular porosity in which porosity reduction is mainly due to compaction and quartz overgrowths, This category includes the shallow marine glauconitic quartzarenites to subarkoses of the Bahariya Fm and of the upper part of Alam El Bueib Fm (unit 3A). Modal porosities range 10-17% and permeabilities do not exceed 300 md. Compactional porosity loss (usually around 20% of initial volume) increases with increasing ductile grain content and decreases with the presence of early siderite cement fwhich acts as a framework-strengthening agent). (2) Sandstones with dominance of intergranular secondary porosity generated after leaching of pore-filling/grain-replacing ferroan dolomite cement. This category includes the fluvial quartzarenites of the lower part of Alam El Bueib (units 5A and 3E) and of the middle part of Lower Bahariya. Reservoir quality is optimum in this group, as porosities are usually around 20% and permeabilities are commonly very high (over WOO md)Sociedad Geológica de España19961996-01-0119961996-01-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10272/11365reponame:Arias Montano. Repositorio Institucional de la Universidad de Huelvainstname:Universidad de Huelva (UHU)Españolspaopen accesshttp://purl.org/coar/access_right/c_abf2Atribución-NoComercial-SinDerivadas 3.0 Españahttp://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:ariasmontano.uhu.es:10272/113652026-06-02T14:58:11Z
dc.title.none.fl_str_mv Control diagenètico sobre la porosidad y permeabilidad en areniscas-almacén cretácicas (área Salam, Western Desert, Egipto)
Diagenetic control on porosity and permeability in Cretaceous reservoir sandstones (Salam area, Western Desert, Egypt)
title Control diagenètico sobre la porosidad y permeabilidad en areniscas-almacén cretácicas (área Salam, Western Desert, Egipto)
spellingShingle Control diagenètico sobre la porosidad y permeabilidad en areniscas-almacén cretácicas (área Salam, Western Desert, Egipto)
Rossi, C.
Reservoir quality
Sandstone diagenesis
Primary porosity
Secondary porosity
title_short Control diagenètico sobre la porosidad y permeabilidad en areniscas-almacén cretácicas (área Salam, Western Desert, Egipto)
title_full Control diagenètico sobre la porosidad y permeabilidad en areniscas-almacén cretácicas (área Salam, Western Desert, Egipto)
title_fullStr Control diagenètico sobre la porosidad y permeabilidad en areniscas-almacén cretácicas (área Salam, Western Desert, Egipto)
title_full_unstemmed Control diagenètico sobre la porosidad y permeabilidad en areniscas-almacén cretácicas (área Salam, Western Desert, Egipto)
title_sort Control diagenètico sobre la porosidad y permeabilidad en areniscas-almacén cretácicas (área Salam, Western Desert, Egipto)
dc.creator.none.fl_str_mv Rossi, C.
Marfil Pérez, Rafaela
Permanyer, Albert
author Rossi, C.
author_facet Rossi, C.
Marfil Pérez, Rafaela
Permanyer, Albert
author_role author
author2 Marfil Pérez, Rafaela
Permanyer, Albert
author2_role author
author
dc.contributor.none.fl_str_mv
dc.subject.none.fl_str_mv Reservoir quality
Sandstone diagenesis
Primary porosity
Secondary porosity
topic Reservoir quality
Sandstone diagenesis
Primary porosity
Secondary porosity
description Pelrographic analysis of core samples of reservoir sandstones from the Sa/am Field show that porosity and permeability are strongly influenced by diagenesis. The studied sandstones can be subdivided into two populations that reflect major differences In the origin of porosity and in the diagenetic evolution: (1) Sandstones with dominance of primary intergranular porosity in which porosity reduction is mainly due to compaction and quartz overgrowths, This category includes the shallow marine glauconitic quartzarenites to subarkoses of the Bahariya Fm and of the upper part of Alam El Bueib Fm (unit 3A). Modal porosities range 10-17% and permeabilities do not exceed 300 md. Compactional porosity loss (usually around 20% of initial volume) increases with increasing ductile grain content and decreases with the presence of early siderite cement fwhich acts as a framework-strengthening agent). (2) Sandstones with dominance of intergranular secondary porosity generated after leaching of pore-filling/grain-replacing ferroan dolomite cement. This category includes the fluvial quartzarenites of the lower part of Alam El Bueib (units 5A and 3E) and of the middle part of Lower Bahariya. Reservoir quality is optimum in this group, as porosities are usually around 20% and permeabilities are commonly very high (over WOO md)
publishDate 1996
dc.date.none.fl_str_mv 1996
1996-01-01
1996
1996-01-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10272/11365
url http://hdl.handle.net/10272/11365
dc.language.none.fl_str_mv Español
spa
language_invalid_str_mv Español
language spa
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Atribución-NoComercial-SinDerivadas 3.0 España
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Atribución-NoComercial-SinDerivadas 3.0 España
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Sociedad Geológica de España
publisher.none.fl_str_mv Sociedad Geológica de España
dc.source.none.fl_str_mv reponame:Arias Montano. Repositorio Institucional de la Universidad de Huelva
instname:Universidad de Huelva (UHU)
instname_str Universidad de Huelva (UHU)
reponame_str Arias Montano. Repositorio Institucional de la Universidad de Huelva
collection Arias Montano. Repositorio Institucional de la Universidad de Huelva
repository.name.fl_str_mv
repository.mail.fl_str_mv
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