Composition of the Lower Cretaceous source rock from the Austral Basin (Río Mayer Formation, Patagonia, Argentina): Regional implication for unconventional reservoirs in the Southe...

Autores
Richiano, Sebastián Miguel; Varela, Augusto Nicolás; Gómez Peral, Lucia; Cereceda, Abril; Poire, Daniel Gustavo
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The importance of the Río Mayer Formation (Lower Cretaceous, prodelta to marine outer shelf) in the hydrocarbon development of the Austral Basin (Patagonia, Argentina) has been recognized by several authors. This unit plays a key-role as source rock and caprock in the "Inoceramus inferior-Springhill" petroleum system, the most important in the basin. In this work we demonstrate that the composition of the Río Mayer Formation highly matches with the requirements to be considered for shale-oil/gas exploitation. The unit studied mainly consists of laminated black siliciclastic mudtones and shales with interbedded marlstones and sandstone levels, and in subsurface shows TOC values up to 3% and kerogen types between II and III. Compositional studies from outcrops of this unit are almost absent and constitute the main focus of this contribution. A total of ten detailed sedimentological logs were measured from the field and X-ray diffraction analysis (XRD), standard petrography, scanning electron microscopy (SEM) and determination of major elements in clay minerals by EDAX were carried out in order to characterize the composition of the Río Mayer Formation. XRD analyses (in fine-grained sediments) indicate a composition dominated by quartz and calcite, with minor proportions of feldspars and clays. Marine sediments are dominated by illite and chlorite, and commonly accompanied by mixed layered illite-smectite (IS), while the prodelta is smectite-dominated with more than 90% of this clay. Both, authigenic and detrital clays were identified using SEM-EDAX. Sandstones of the Río Mayer Formation are generally lithic and feldspar graywackes. Provenance analyses in sandstones make possible the discrimination of four groups of samples differentiated by their ages and palaeoenvironments. In comparison with other important shale-reservoirs from North America (Barnett, Marcellus, Woodford, Haynesville and Doig), the composition of the unit studied have more quartzitic composition, reflecting in a high brittleness index (BI) that result in a clear brittle pattern.
Fil: Richiano, Sebastián Miguel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina
Fil: Varela, Augusto Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina
Fil: Gómez Peral, Lucia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina
Fil: Cereceda, Abril. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina
Fil: Poire, Daniel Gustavo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina
Materia
Clay Assemblages
Petrographic Analysis
Sem-Edax
Shale-Oil/Gas
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
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CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
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oai:ri.conicet.gov.ar:11336/49319
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/49319
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Composition of the Lower Cretaceous source rock from the Austral Basin (Río Mayer Formation, Patagonia, Argentina): Regional implication for unconventional reservoirs in the Southern AndesRichiano, Sebastián MiguelVarela, Augusto NicolásGómez Peral, LuciaCereceda, AbrilPoire, Daniel GustavoClay AssemblagesPetrographic AnalysisSem-EdaxShale-Oil/Gashttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The importance of the Río Mayer Formation (Lower Cretaceous, prodelta to marine outer shelf) in the hydrocarbon development of the Austral Basin (Patagonia, Argentina) has been recognized by several authors. This unit plays a key-role as source rock and caprock in the "Inoceramus inferior-Springhill" petroleum system, the most important in the basin. In this work we demonstrate that the composition of the Río Mayer Formation highly matches with the requirements to be considered for shale-oil/gas exploitation. The unit studied mainly consists of laminated black siliciclastic mudtones and shales with interbedded marlstones and sandstone levels, and in subsurface shows TOC values up to 3% and kerogen types between II and III. Compositional studies from outcrops of this unit are almost absent and constitute the main focus of this contribution. A total of ten detailed sedimentological logs were measured from the field and X-ray diffraction analysis (XRD), standard petrography, scanning electron microscopy (SEM) and determination of major elements in clay minerals by EDAX were carried out in order to characterize the composition of the Río Mayer Formation. XRD analyses (in fine-grained sediments) indicate a composition dominated by quartz and calcite, with minor proportions of feldspars and clays. Marine sediments are dominated by illite and chlorite, and commonly accompanied by mixed layered illite-smectite (IS), while the prodelta is smectite-dominated with more than 90% of this clay. Both, authigenic and detrital clays were identified using SEM-EDAX. Sandstones of the Río Mayer Formation are generally lithic and feldspar graywackes. Provenance analyses in sandstones make possible the discrimination of four groups of samples differentiated by their ages and palaeoenvironments. In comparison with other important shale-reservoirs from North America (Barnett, Marcellus, Woodford, Haynesville and Doig), the composition of the unit studied have more quartzitic composition, reflecting in a high brittleness index (BI) that result in a clear brittle pattern.Fil: Richiano, Sebastián Miguel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; ArgentinaFil: Varela, Augusto Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; ArgentinaFil: Gómez Peral, Lucia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; ArgentinaFil: Cereceda, Abril. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; ArgentinaFil: Poire, Daniel Gustavo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; ArgentinaElsevier2015-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/49319Richiano, Sebastián Miguel; Varela, Augusto Nicolás; Gómez Peral, Lucia; Cereceda, Abril; Poire, Daniel Gustavo; Composition of the Lower Cretaceous source rock from the Austral Basin (Río Mayer Formation, Patagonia, Argentina): Regional implication for unconventional reservoirs in the Southern Andes; Elsevier; Marine And Petroleum Geology; 66; Parte 4; 9-2015; 764-7900264-8172CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.marpetgeo.2015.07.018info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0264817215300398info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T12:05:05Zoai:ri.conicet.gov.ar:11336/49319instacron: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:34982025-10-22 12:05:05.931CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Composition of the Lower Cretaceous source rock from the Austral Basin (Río Mayer Formation, Patagonia, Argentina): Regional implication for unconventional reservoirs in the Southern Andes
title Composition of the Lower Cretaceous source rock from the Austral Basin (Río Mayer Formation, Patagonia, Argentina): Regional implication for unconventional reservoirs in the Southern Andes
spellingShingle Composition of the Lower Cretaceous source rock from the Austral Basin (Río Mayer Formation, Patagonia, Argentina): Regional implication for unconventional reservoirs in the Southern Andes
Richiano, Sebastián Miguel
Clay Assemblages
Petrographic Analysis
Sem-Edax
Shale-Oil/Gas
title_short Composition of the Lower Cretaceous source rock from the Austral Basin (Río Mayer Formation, Patagonia, Argentina): Regional implication for unconventional reservoirs in the Southern Andes
title_full Composition of the Lower Cretaceous source rock from the Austral Basin (Río Mayer Formation, Patagonia, Argentina): Regional implication for unconventional reservoirs in the Southern Andes
title_fullStr Composition of the Lower Cretaceous source rock from the Austral Basin (Río Mayer Formation, Patagonia, Argentina): Regional implication for unconventional reservoirs in the Southern Andes
title_full_unstemmed Composition of the Lower Cretaceous source rock from the Austral Basin (Río Mayer Formation, Patagonia, Argentina): Regional implication for unconventional reservoirs in the Southern Andes
title_sort Composition of the Lower Cretaceous source rock from the Austral Basin (Río Mayer Formation, Patagonia, Argentina): Regional implication for unconventional reservoirs in the Southern Andes
dc.creator.none.fl_str_mv Richiano, Sebastián Miguel
Varela, Augusto Nicolás
Gómez Peral, Lucia
Cereceda, Abril
Poire, Daniel Gustavo
author Richiano, Sebastián Miguel
author_facet Richiano, Sebastián Miguel
Varela, Augusto Nicolás
Gómez Peral, Lucia
Cereceda, Abril
Poire, Daniel Gustavo
author_role author
author2 Varela, Augusto Nicolás
Gómez Peral, Lucia
Cereceda, Abril
Poire, Daniel Gustavo
author2_role author
author
author
author
dc.subject.none.fl_str_mv Clay Assemblages
Petrographic Analysis
Sem-Edax
Shale-Oil/Gas
topic Clay Assemblages
Petrographic Analysis
Sem-Edax
Shale-Oil/Gas
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 importance of the Río Mayer Formation (Lower Cretaceous, prodelta to marine outer shelf) in the hydrocarbon development of the Austral Basin (Patagonia, Argentina) has been recognized by several authors. This unit plays a key-role as source rock and caprock in the "Inoceramus inferior-Springhill" petroleum system, the most important in the basin. In this work we demonstrate that the composition of the Río Mayer Formation highly matches with the requirements to be considered for shale-oil/gas exploitation. The unit studied mainly consists of laminated black siliciclastic mudtones and shales with interbedded marlstones and sandstone levels, and in subsurface shows TOC values up to 3% and kerogen types between II and III. Compositional studies from outcrops of this unit are almost absent and constitute the main focus of this contribution. A total of ten detailed sedimentological logs were measured from the field and X-ray diffraction analysis (XRD), standard petrography, scanning electron microscopy (SEM) and determination of major elements in clay minerals by EDAX were carried out in order to characterize the composition of the Río Mayer Formation. XRD analyses (in fine-grained sediments) indicate a composition dominated by quartz and calcite, with minor proportions of feldspars and clays. Marine sediments are dominated by illite and chlorite, and commonly accompanied by mixed layered illite-smectite (IS), while the prodelta is smectite-dominated with more than 90% of this clay. Both, authigenic and detrital clays were identified using SEM-EDAX. Sandstones of the Río Mayer Formation are generally lithic and feldspar graywackes. Provenance analyses in sandstones make possible the discrimination of four groups of samples differentiated by their ages and palaeoenvironments. In comparison with other important shale-reservoirs from North America (Barnett, Marcellus, Woodford, Haynesville and Doig), the composition of the unit studied have more quartzitic composition, reflecting in a high brittleness index (BI) that result in a clear brittle pattern.
Fil: Richiano, Sebastián Miguel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina
Fil: Varela, Augusto Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina
Fil: Gómez Peral, Lucia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina
Fil: Cereceda, Abril. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina
Fil: Poire, Daniel Gustavo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina
description The importance of the Río Mayer Formation (Lower Cretaceous, prodelta to marine outer shelf) in the hydrocarbon development of the Austral Basin (Patagonia, Argentina) has been recognized by several authors. This unit plays a key-role as source rock and caprock in the "Inoceramus inferior-Springhill" petroleum system, the most important in the basin. In this work we demonstrate that the composition of the Río Mayer Formation highly matches with the requirements to be considered for shale-oil/gas exploitation. The unit studied mainly consists of laminated black siliciclastic mudtones and shales with interbedded marlstones and sandstone levels, and in subsurface shows TOC values up to 3% and kerogen types between II and III. Compositional studies from outcrops of this unit are almost absent and constitute the main focus of this contribution. A total of ten detailed sedimentological logs were measured from the field and X-ray diffraction analysis (XRD), standard petrography, scanning electron microscopy (SEM) and determination of major elements in clay minerals by EDAX were carried out in order to characterize the composition of the Río Mayer Formation. XRD analyses (in fine-grained sediments) indicate a composition dominated by quartz and calcite, with minor proportions of feldspars and clays. Marine sediments are dominated by illite and chlorite, and commonly accompanied by mixed layered illite-smectite (IS), while the prodelta is smectite-dominated with more than 90% of this clay. Both, authigenic and detrital clays were identified using SEM-EDAX. Sandstones of the Río Mayer Formation are generally lithic and feldspar graywackes. Provenance analyses in sandstones make possible the discrimination of four groups of samples differentiated by their ages and palaeoenvironments. In comparison with other important shale-reservoirs from North America (Barnett, Marcellus, Woodford, Haynesville and Doig), the composition of the unit studied have more quartzitic composition, reflecting in a high brittleness index (BI) that result in a clear brittle pattern.
publishDate 2015
dc.date.none.fl_str_mv 2015-09
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/11336/49319
Richiano, Sebastián Miguel; Varela, Augusto Nicolás; Gómez Peral, Lucia; Cereceda, Abril; Poire, Daniel Gustavo; Composition of the Lower Cretaceous source rock from the Austral Basin (Río Mayer Formation, Patagonia, Argentina): Regional implication for unconventional reservoirs in the Southern Andes; Elsevier; Marine And Petroleum Geology; 66; Parte 4; 9-2015; 764-790
0264-8172
CONICET Digital
CONICET
url http://hdl.handle.net/11336/49319
identifier_str_mv Richiano, Sebastián Miguel; Varela, Augusto Nicolás; Gómez Peral, Lucia; Cereceda, Abril; Poire, Daniel Gustavo; Composition of the Lower Cretaceous source rock from the Austral Basin (Río Mayer Formation, Patagonia, Argentina): Regional implication for unconventional reservoirs in the Southern Andes; Elsevier; Marine And Petroleum Geology; 66; Parte 4; 9-2015; 764-790
0264-8172
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.marpetgeo.2015.07.018
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0264817215300398
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 Elsevier
publisher.none.fl_str_mv Elsevier
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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