Pore fluid evolution within a hydrocarbon reservoir: Yacoraite formation (upper Cretaceous), northwest basin, Argentina

Autores
Cesaretti, Nora Noemi; Parnell, John; Dominguez, Eduardo Alejandro
Año de publicación
2000
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Hydrocarbon and aqueous fluid inclusions in quartz and anhydrite cements in sandstones and carbonates in the upper part of the Yacoraite Formation (Upper Cretaceous) were studied in wells in the Lomas de Olmedo Sub-basin, Northwest Basin, Argentina. Intergranular, mouldic and vuggy primary porosity in these rocks was reduced by quartz overgrowths, anhydrite cement and bitumen, and was increased by dolomite recrystallization and fracturing. High porosities are thought to reflect high pore fluid pressures; the highest porosities are associated with a greater abundance of secondary fluid inclusions, reflecting healing of microfractures produced by the release of overpressured fluids. Paraffinic (light) and asphaltic (heavy to medium?) hydrocarbon fluid inclusions are recognized by their light-blue and yellow-greenish fluorescence colours. In the stratigraphically lower levels of the Yacoraite Formation, reddish-fluorescent asphaltic fluid inclusions with lower cloud points predominate, whereas in the upper levels, lighter hydrocarbons with higher cloud points, propane, ethane and methane occur in the inclusions. For aqueous fluid inclusions, data from freezing experiments indicate that NaCl-MgCl2-Na2SO4-NaHCO3-NaCO3 brines were present during cementation with 17 equiv. wt.% NaCl. Temperatures during cementation were in the range 121-137°C, indicating that the samples are in the oil and gas window. The petrographic data indicate that a hydrocarbon fluid has been present since early diagenesis began. An increase in burial depth is correlated with an increase in the temperature and pressure in the pore fluids. This caused the maturation of organic matter in the carbonates, generating CO2 and carboxyl ions, which in turn caused carbonate dissolution and anhydrite and dolomite precipitation. In the sandstones, the maturation of oil resulted in bitumen pore-fillings and secondary fluorescing inclusions.
Fil: Cesaretti, Nora Noemi. Universidad Nacional del Sur. Departamento de Geología; Argentina
Fil: Parnell, John. University of Aberdeen; Reino Unido
Fil: Dominguez, Eduardo Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Geológico del Sur. Universidad Nacional del Sur. Departamento de Geología. Instituto Geológico del Sur; Argentina
Materia
Pore
Fluid Evolution
Within
Hydrocarbon Reservoir
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/80677
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Pore fluid evolution within a hydrocarbon reservoir: Yacoraite formation (upper Cretaceous), northwest basin, ArgentinaCesaretti, Nora NoemiParnell, JohnDominguez, Eduardo AlejandroPoreFluid EvolutionWithinHydrocarbon Reservoirhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Hydrocarbon and aqueous fluid inclusions in quartz and anhydrite cements in sandstones and carbonates in the upper part of the Yacoraite Formation (Upper Cretaceous) were studied in wells in the Lomas de Olmedo Sub-basin, Northwest Basin, Argentina. Intergranular, mouldic and vuggy primary porosity in these rocks was reduced by quartz overgrowths, anhydrite cement and bitumen, and was increased by dolomite recrystallization and fracturing. High porosities are thought to reflect high pore fluid pressures; the highest porosities are associated with a greater abundance of secondary fluid inclusions, reflecting healing of microfractures produced by the release of overpressured fluids. Paraffinic (light) and asphaltic (heavy to medium?) hydrocarbon fluid inclusions are recognized by their light-blue and yellow-greenish fluorescence colours. In the stratigraphically lower levels of the Yacoraite Formation, reddish-fluorescent asphaltic fluid inclusions with lower cloud points predominate, whereas in the upper levels, lighter hydrocarbons with higher cloud points, propane, ethane and methane occur in the inclusions. For aqueous fluid inclusions, data from freezing experiments indicate that NaCl-MgCl2-Na2SO4-NaHCO3-NaCO3 brines were present during cementation with 17 equiv. wt.% NaCl. Temperatures during cementation were in the range 121-137°C, indicating that the samples are in the oil and gas window. The petrographic data indicate that a hydrocarbon fluid has been present since early diagenesis began. An increase in burial depth is correlated with an increase in the temperature and pressure in the pore fluids. This caused the maturation of organic matter in the carbonates, generating CO2 and carboxyl ions, which in turn caused carbonate dissolution and anhydrite and dolomite precipitation. In the sandstones, the maturation of oil resulted in bitumen pore-fillings and secondary fluorescing inclusions.Fil: Cesaretti, Nora Noemi. Universidad Nacional del Sur. Departamento de Geología; ArgentinaFil: Parnell, John. University of Aberdeen; Reino UnidoFil: Dominguez, Eduardo Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Geológico del Sur. Universidad Nacional del Sur. Departamento de Geología. Instituto Geológico del Sur; ArgentinaWiley Blackwell Publishing, Inc2000-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/80677Cesaretti, Nora Noemi; Parnell, John; Dominguez, Eduardo Alejandro; Pore fluid evolution within a hydrocarbon reservoir: Yacoraite formation (upper Cretaceous), northwest basin, Argentina; Wiley Blackwell Publishing, Inc; Journal Of Petroleum Geology; 23; 4; 10-2000; 375-3980141-6421CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1747-5457.2000.tb00493.xinfo:eu-repo/semantics/altIdentifier/doi/10.1111/j.1747-5457.2000.tb00493.xinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:01:46Zoai:ri.conicet.gov.ar:11336/80677instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:01:47.305CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Pore fluid evolution within a hydrocarbon reservoir: Yacoraite formation (upper Cretaceous), northwest basin, Argentina
title Pore fluid evolution within a hydrocarbon reservoir: Yacoraite formation (upper Cretaceous), northwest basin, Argentina
spellingShingle Pore fluid evolution within a hydrocarbon reservoir: Yacoraite formation (upper Cretaceous), northwest basin, Argentina
Cesaretti, Nora Noemi
Pore
Fluid Evolution
Within
Hydrocarbon Reservoir
title_short Pore fluid evolution within a hydrocarbon reservoir: Yacoraite formation (upper Cretaceous), northwest basin, Argentina
title_full Pore fluid evolution within a hydrocarbon reservoir: Yacoraite formation (upper Cretaceous), northwest basin, Argentina
title_fullStr Pore fluid evolution within a hydrocarbon reservoir: Yacoraite formation (upper Cretaceous), northwest basin, Argentina
title_full_unstemmed Pore fluid evolution within a hydrocarbon reservoir: Yacoraite formation (upper Cretaceous), northwest basin, Argentina
title_sort Pore fluid evolution within a hydrocarbon reservoir: Yacoraite formation (upper Cretaceous), northwest basin, Argentina
dc.creator.none.fl_str_mv Cesaretti, Nora Noemi
Parnell, John
Dominguez, Eduardo Alejandro
author Cesaretti, Nora Noemi
author_facet Cesaretti, Nora Noemi
Parnell, John
Dominguez, Eduardo Alejandro
author_role author
author2 Parnell, John
Dominguez, Eduardo Alejandro
author2_role author
author
dc.subject.none.fl_str_mv Pore
Fluid Evolution
Within
Hydrocarbon Reservoir
topic Pore
Fluid Evolution
Within
Hydrocarbon Reservoir
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Hydrocarbon and aqueous fluid inclusions in quartz and anhydrite cements in sandstones and carbonates in the upper part of the Yacoraite Formation (Upper Cretaceous) were studied in wells in the Lomas de Olmedo Sub-basin, Northwest Basin, Argentina. Intergranular, mouldic and vuggy primary porosity in these rocks was reduced by quartz overgrowths, anhydrite cement and bitumen, and was increased by dolomite recrystallization and fracturing. High porosities are thought to reflect high pore fluid pressures; the highest porosities are associated with a greater abundance of secondary fluid inclusions, reflecting healing of microfractures produced by the release of overpressured fluids. Paraffinic (light) and asphaltic (heavy to medium?) hydrocarbon fluid inclusions are recognized by their light-blue and yellow-greenish fluorescence colours. In the stratigraphically lower levels of the Yacoraite Formation, reddish-fluorescent asphaltic fluid inclusions with lower cloud points predominate, whereas in the upper levels, lighter hydrocarbons with higher cloud points, propane, ethane and methane occur in the inclusions. For aqueous fluid inclusions, data from freezing experiments indicate that NaCl-MgCl2-Na2SO4-NaHCO3-NaCO3 brines were present during cementation with 17 equiv. wt.% NaCl. Temperatures during cementation were in the range 121-137°C, indicating that the samples are in the oil and gas window. The petrographic data indicate that a hydrocarbon fluid has been present since early diagenesis began. An increase in burial depth is correlated with an increase in the temperature and pressure in the pore fluids. This caused the maturation of organic matter in the carbonates, generating CO2 and carboxyl ions, which in turn caused carbonate dissolution and anhydrite and dolomite precipitation. In the sandstones, the maturation of oil resulted in bitumen pore-fillings and secondary fluorescing inclusions.
Fil: Cesaretti, Nora Noemi. Universidad Nacional del Sur. Departamento de Geología; Argentina
Fil: Parnell, John. University of Aberdeen; Reino Unido
Fil: Dominguez, Eduardo Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Geológico del Sur. Universidad Nacional del Sur. Departamento de Geología. Instituto Geológico del Sur; Argentina
description Hydrocarbon and aqueous fluid inclusions in quartz and anhydrite cements in sandstones and carbonates in the upper part of the Yacoraite Formation (Upper Cretaceous) were studied in wells in the Lomas de Olmedo Sub-basin, Northwest Basin, Argentina. Intergranular, mouldic and vuggy primary porosity in these rocks was reduced by quartz overgrowths, anhydrite cement and bitumen, and was increased by dolomite recrystallization and fracturing. High porosities are thought to reflect high pore fluid pressures; the highest porosities are associated with a greater abundance of secondary fluid inclusions, reflecting healing of microfractures produced by the release of overpressured fluids. Paraffinic (light) and asphaltic (heavy to medium?) hydrocarbon fluid inclusions are recognized by their light-blue and yellow-greenish fluorescence colours. In the stratigraphically lower levels of the Yacoraite Formation, reddish-fluorescent asphaltic fluid inclusions with lower cloud points predominate, whereas in the upper levels, lighter hydrocarbons with higher cloud points, propane, ethane and methane occur in the inclusions. For aqueous fluid inclusions, data from freezing experiments indicate that NaCl-MgCl2-Na2SO4-NaHCO3-NaCO3 brines were present during cementation with 17 equiv. wt.% NaCl. Temperatures during cementation were in the range 121-137°C, indicating that the samples are in the oil and gas window. The petrographic data indicate that a hydrocarbon fluid has been present since early diagenesis began. An increase in burial depth is correlated with an increase in the temperature and pressure in the pore fluids. This caused the maturation of organic matter in the carbonates, generating CO2 and carboxyl ions, which in turn caused carbonate dissolution and anhydrite and dolomite precipitation. In the sandstones, the maturation of oil resulted in bitumen pore-fillings and secondary fluorescing inclusions.
publishDate 2000
dc.date.none.fl_str_mv 2000-10
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/80677
Cesaretti, Nora Noemi; Parnell, John; Dominguez, Eduardo Alejandro; Pore fluid evolution within a hydrocarbon reservoir: Yacoraite formation (upper Cretaceous), northwest basin, Argentina; Wiley Blackwell Publishing, Inc; Journal Of Petroleum Geology; 23; 4; 10-2000; 375-398
0141-6421
CONICET Digital
CONICET
url http://hdl.handle.net/11336/80677
identifier_str_mv Cesaretti, Nora Noemi; Parnell, John; Dominguez, Eduardo Alejandro; Pore fluid evolution within a hydrocarbon reservoir: Yacoraite formation (upper Cretaceous), northwest basin, Argentina; Wiley Blackwell Publishing, Inc; Journal Of Petroleum Geology; 23; 4; 10-2000; 375-398
0141-6421
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1747-5457.2000.tb00493.x
info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1747-5457.2000.tb00493.x
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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