A multiscale approach to analyzing the pore system of tight sandstones: a case study of The Lajas Formation (Middle Jurassic), Neuquén Basin, Argentina

Autores
Frayssinet, Lucrecia; Comerio, Marcos; González Pelegrí, Ezequiel; Juárez, Jorge Enrique; Domené, Esteban Alejo
Año de publicación
2025
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The Lajas Formation (Middle Jurassic) of the Neuquén Basin in Argentina, is a renowned unconventional tight gas sandstone reservoir. It has been widely studied from multidiscipline approaches; however, few petrophysical studies have been published. The objective of this study is to examine correlations between various porosity measurements obtained through petrographic optical and scanning electron microscopy (SEM), combined with quantitative X-ray diffraction (XRD) mineralogy, and petrophysical laboratory measurements, including Nuclear Magnetic Resonance (NMR at 2 MHz) and Gas Filled Porosity (GFP). The analyzed samples cover a wide compositional spectrum ranging from lithic feldsarenites to feldspathic litharenites, the clay fraction dominated by chlorite or mixed illite-smectite with less than 20 % of expandable layers (I/S), and total porosity ranging from 5 % to 13 %. Inter-crystalline pores, associated to clay minerals, are a key component controlling the pore system of the unit. SEM images and the strong correlation between XRD data, and the clay-bound water derived from NMR T1-T2 maps are clear evidence of this. The analyzed reservoir shows a high variability and complexity in the pore structure related to other textural pores (e.g., non-clay intergranular and intragranular pores), thus reflecting the importance of multidisciplinary and multiscale studies that aim to understand the heterogeneous porosity network of tight sandstone reservoirs.
Fil: Frayssinet, Lucrecia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. YPF - Tecnología; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina
Fil: Comerio, Marcos. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. YPF - Tecnología; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina
Fil: González Pelegrí, Ezequiel. YPF - Tecnología; Argentina
Fil: Juárez, Jorge Enrique. YPF - Tecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Domené, Esteban Alejo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. YPF - Tecnología; Argentina
Materia
tight sandstones
clay minerals
porosity
diagenesis
Nivel de accesibilidad
acceso embargado
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:11336/264368
Acceder
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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling A multiscale approach to analyzing the pore system of tight sandstones: a case study of The Lajas Formation (Middle Jurassic), Neuquén Basin, ArgentinaFrayssinet, LucreciaComerio, MarcosGonzález Pelegrí, EzequielJuárez, Jorge EnriqueDomené, Esteban Alejotight sandstonesclay mineralsporositydiagenesishttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The Lajas Formation (Middle Jurassic) of the Neuquén Basin in Argentina, is a renowned unconventional tight gas sandstone reservoir. It has been widely studied from multidiscipline approaches; however, few petrophysical studies have been published. The objective of this study is to examine correlations between various porosity measurements obtained through petrographic optical and scanning electron microscopy (SEM), combined with quantitative X-ray diffraction (XRD) mineralogy, and petrophysical laboratory measurements, including Nuclear Magnetic Resonance (NMR at 2 MHz) and Gas Filled Porosity (GFP). The analyzed samples cover a wide compositional spectrum ranging from lithic feldsarenites to feldspathic litharenites, the clay fraction dominated by chlorite or mixed illite-smectite with less than 20 % of expandable layers (I/S), and total porosity ranging from 5 % to 13 %. Inter-crystalline pores, associated to clay minerals, are a key component controlling the pore system of the unit. SEM images and the strong correlation between XRD data, and the clay-bound water derived from NMR T1-T2 maps are clear evidence of this. The analyzed reservoir shows a high variability and complexity in the pore structure related to other textural pores (e.g., non-clay intergranular and intragranular pores), thus reflecting the importance of multidisciplinary and multiscale studies that aim to understand the heterogeneous porosity network of tight sandstone reservoirs.Fil: Frayssinet, Lucrecia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. YPF - Tecnología; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; ArgentinaFil: Comerio, Marcos. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. YPF - Tecnología; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; ArgentinaFil: González Pelegrí, Ezequiel. YPF - Tecnología; ArgentinaFil: Juárez, Jorge Enrique. YPF - Tecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Domené, Esteban Alejo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. YPF - Tecnología; ArgentinaGeological Society Publications House2025-04info:eu-repo/date/embargoEnd/2025-11-23info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/264368Frayssinet, Lucrecia; Comerio, Marcos; González Pelegrí, Ezequiel; Juárez, Jorge Enrique; Domené, Esteban Alejo; A multiscale approach to analyzing the pore system of tight sandstones: a case study of The Lajas Formation (Middle Jurassic), Neuquén Basin, Argentina; Geological Society Publications House; Petroleum Geoscience; 31; 2; 4-2025; 1-391354-0793CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.lyellcollection.org/doi/10.1144/petgeo2024-055info:eu-repo/semantics/altIdentifier/doi/10.1144/petgeo2024-055info:eu-repo/semantics/embargoedAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:01:19Zoai:ri.conicet.gov.ar:11336/264368instacron: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:34982025-09-03 10:01:19.559CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv A multiscale approach to analyzing the pore system of tight sandstones: a case study of The Lajas Formation (Middle Jurassic), Neuquén Basin, Argentina
title A multiscale approach to analyzing the pore system of tight sandstones: a case study of The Lajas Formation (Middle Jurassic), Neuquén Basin, Argentina
spellingShingle A multiscale approach to analyzing the pore system of tight sandstones: a case study of The Lajas Formation (Middle Jurassic), Neuquén Basin, Argentina
Frayssinet, Lucrecia
tight sandstones
clay minerals
porosity
diagenesis
title_short A multiscale approach to analyzing the pore system of tight sandstones: a case study of The Lajas Formation (Middle Jurassic), Neuquén Basin, Argentina
title_full A multiscale approach to analyzing the pore system of tight sandstones: a case study of The Lajas Formation (Middle Jurassic), Neuquén Basin, Argentina
title_fullStr A multiscale approach to analyzing the pore system of tight sandstones: a case study of The Lajas Formation (Middle Jurassic), Neuquén Basin, Argentina
title_full_unstemmed A multiscale approach to analyzing the pore system of tight sandstones: a case study of The Lajas Formation (Middle Jurassic), Neuquén Basin, Argentina
title_sort A multiscale approach to analyzing the pore system of tight sandstones: a case study of The Lajas Formation (Middle Jurassic), Neuquén Basin, Argentina
dc.creator.none.fl_str_mv Frayssinet, Lucrecia
Comerio, Marcos
González Pelegrí, Ezequiel
Juárez, Jorge Enrique
Domené, Esteban Alejo
author Frayssinet, Lucrecia
author_facet Frayssinet, Lucrecia
Comerio, Marcos
González Pelegrí, Ezequiel
Juárez, Jorge Enrique
Domené, Esteban Alejo
author_role author
author2 Comerio, Marcos
González Pelegrí, Ezequiel
Juárez, Jorge Enrique
Domené, Esteban Alejo
author2_role author
author
author
author
dc.subject.none.fl_str_mv tight sandstones
clay minerals
porosity
diagenesis
topic tight sandstones
clay minerals
porosity
diagenesis
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The Lajas Formation (Middle Jurassic) of the Neuquén Basin in Argentina, is a renowned unconventional tight gas sandstone reservoir. It has been widely studied from multidiscipline approaches; however, few petrophysical studies have been published. The objective of this study is to examine correlations between various porosity measurements obtained through petrographic optical and scanning electron microscopy (SEM), combined with quantitative X-ray diffraction (XRD) mineralogy, and petrophysical laboratory measurements, including Nuclear Magnetic Resonance (NMR at 2 MHz) and Gas Filled Porosity (GFP). The analyzed samples cover a wide compositional spectrum ranging from lithic feldsarenites to feldspathic litharenites, the clay fraction dominated by chlorite or mixed illite-smectite with less than 20 % of expandable layers (I/S), and total porosity ranging from 5 % to 13 %. Inter-crystalline pores, associated to clay minerals, are a key component controlling the pore system of the unit. SEM images and the strong correlation between XRD data, and the clay-bound water derived from NMR T1-T2 maps are clear evidence of this. The analyzed reservoir shows a high variability and complexity in the pore structure related to other textural pores (e.g., non-clay intergranular and intragranular pores), thus reflecting the importance of multidisciplinary and multiscale studies that aim to understand the heterogeneous porosity network of tight sandstone reservoirs.
Fil: Frayssinet, Lucrecia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. YPF - Tecnología; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina
Fil: Comerio, Marcos. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. YPF - Tecnología; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina
Fil: González Pelegrí, Ezequiel. YPF - Tecnología; Argentina
Fil: Juárez, Jorge Enrique. YPF - Tecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Domené, Esteban Alejo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. YPF - Tecnología; Argentina
description The Lajas Formation (Middle Jurassic) of the Neuquén Basin in Argentina, is a renowned unconventional tight gas sandstone reservoir. It has been widely studied from multidiscipline approaches; however, few petrophysical studies have been published. The objective of this study is to examine correlations between various porosity measurements obtained through petrographic optical and scanning electron microscopy (SEM), combined with quantitative X-ray diffraction (XRD) mineralogy, and petrophysical laboratory measurements, including Nuclear Magnetic Resonance (NMR at 2 MHz) and Gas Filled Porosity (GFP). The analyzed samples cover a wide compositional spectrum ranging from lithic feldsarenites to feldspathic litharenites, the clay fraction dominated by chlorite or mixed illite-smectite with less than 20 % of expandable layers (I/S), and total porosity ranging from 5 % to 13 %. Inter-crystalline pores, associated to clay minerals, are a key component controlling the pore system of the unit. SEM images and the strong correlation between XRD data, and the clay-bound water derived from NMR T1-T2 maps are clear evidence of this. The analyzed reservoir shows a high variability and complexity in the pore structure related to other textural pores (e.g., non-clay intergranular and intragranular pores), thus reflecting the importance of multidisciplinary and multiscale studies that aim to understand the heterogeneous porosity network of tight sandstone reservoirs.
publishDate 2025
dc.date.none.fl_str_mv 2025-04
info:eu-repo/date/embargoEnd/2025-11-23
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/11336/264368
Frayssinet, Lucrecia; Comerio, Marcos; González Pelegrí, Ezequiel; Juárez, Jorge Enrique; Domené, Esteban Alejo; A multiscale approach to analyzing the pore system of tight sandstones: a case study of The Lajas Formation (Middle Jurassic), Neuquén Basin, Argentina; Geological Society Publications House; Petroleum Geoscience; 31; 2; 4-2025; 1-39
1354-0793
CONICET Digital
CONICET
url http://hdl.handle.net/11336/264368
identifier_str_mv Frayssinet, Lucrecia; Comerio, Marcos; González Pelegrí, Ezequiel; Juárez, Jorge Enrique; Domené, Esteban Alejo; A multiscale approach to analyzing the pore system of tight sandstones: a case study of The Lajas Formation (Middle Jurassic), Neuquén Basin, Argentina; Geological Society Publications House; Petroleum Geoscience; 31; 2; 4-2025; 1-39
1354-0793
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://www.lyellcollection.org/doi/10.1144/petgeo2024-055
info:eu-repo/semantics/altIdentifier/doi/10.1144/petgeo2024-055
dc.rights.none.fl_str_mv info:eu-repo/semantics/embargoedAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv embargoedAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Geological Society Publications House
publisher.none.fl_str_mv Geological Society Publications House
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 13.13397

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