Mechanical stratigraphy and structural control of oil accumulations in fractured carbonates of the Irati Formation, Parana Basin, Brazil
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/2317-4889202020190117 http://hdl.handle.net/11449/197860 |
Resumo: | Fracturing analysis of low-permeability rocks as reservoir analogs have increased in recent years. The main mechanism involved in the development of secondary porosity in low-permeability, fine-grained limestones of the Irati Formation is fracturing. In these rocks, oil accumulates along fracture planes, vuggy porosity, microfractures, breccias, as well as bedding discontinuities. Joints represent the central element for oil migration and the connection between accumulation sites. Joints are unevenly distributed across the succession of rock types, where carbonate rocks have a much denser array of joints than shales and siltstones. From a mechanical stratigraphy point of view, limestones have a brittle behavior and constitute mechanical units. Ductile shale and siltstone are mechanical interfaces capable of blocking joint propagation. Joints running NW-SE are more effective in trespassing the mechanical interface and are, therefore, more persistent. Joints running NE-SW are less persistent because the ductile behavior of the first two shale beds above the limestone blocks their propagation. The spatial arrangement of regional NW-SE and NE-SW joints promoted reservoir connection, allowing oil migration and accumulation. The joints and oil migration (at least three phases) developed as a consequence of the Gondwana Breakup and are also associated with local pressure gradients. |
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Mechanical stratigraphy and structural control of oil accumulations in fractured carbonates of the Irati Formation, Parana Basin, Brazilmechanical stratigraphyplanar surfacesfracture connectionPitanga Structural HighFracturing analysis of low-permeability rocks as reservoir analogs have increased in recent years. The main mechanism involved in the development of secondary porosity in low-permeability, fine-grained limestones of the Irati Formation is fracturing. In these rocks, oil accumulates along fracture planes, vuggy porosity, microfractures, breccias, as well as bedding discontinuities. Joints represent the central element for oil migration and the connection between accumulation sites. Joints are unevenly distributed across the succession of rock types, where carbonate rocks have a much denser array of joints than shales and siltstones. From a mechanical stratigraphy point of view, limestones have a brittle behavior and constitute mechanical units. Ductile shale and siltstone are mechanical interfaces capable of blocking joint propagation. Joints running NW-SE are more effective in trespassing the mechanical interface and are, therefore, more persistent. Joints running NE-SW are less persistent because the ductile behavior of the first two shale beds above the limestone blocks their propagation. The spatial arrangement of regional NW-SE and NE-SW joints promoted reservoir connection, allowing oil migration and accumulation. The joints and oil migration (at least three phases) developed as a consequence of the Gondwana Breakup and are also associated with local pressure gradients.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Univ Estadual Paulista, Rio Claro, SP, BrazilUniv Vale Rio dos Sinos, Sao Leopoldo, RS, BrazilUniv Estadual Paulista, Rio Claro, SP, BrazilFAPESP: 2013/19878-6CNPq: 311204/2017-1Soc Brasileira GeologiaUniversidade Estadual Paulista (Unesp)Univ Vale Rio dos SinosCerri, Rodrigo Irineu [UNESP]Luvizotto, George Luiz [UNESP]Wohnrath Tognoli, Francisco ManoelWarren, Lucas Verissimo [UNESP]Okubo, Juliana [UNESP]Morales, Norberto [UNESP]2020-12-11T22:20:23Z2020-12-11T22:20:23Z2020-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article12application/pdfhttp://dx.doi.org/10.1590/2317-4889202020190117Brazilian Journal Of Geology. Sao Paulo: Soc Brasileira Geologia, v. 50, n. 3, 12 p., 2020.2317-4889http://hdl.handle.net/11449/19786010.1590/2317-4889202020190117S2317-48892020000300303WOS:000552428800001S2317-48892020000300303.pdf5136594572347865Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengBrazilian Journal Of Geologyinfo:eu-repo/semantics/openAccess2024-01-12T06:25:05Zoai:repositorio.unesp.br:11449/197860Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-01-12T06:25:05Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Mechanical stratigraphy and structural control of oil accumulations in fractured carbonates of the Irati Formation, Parana Basin, Brazil |
title |
Mechanical stratigraphy and structural control of oil accumulations in fractured carbonates of the Irati Formation, Parana Basin, Brazil |
spellingShingle |
Mechanical stratigraphy and structural control of oil accumulations in fractured carbonates of the Irati Formation, Parana Basin, Brazil Cerri, Rodrigo Irineu [UNESP] mechanical stratigraphy planar surfaces fracture connection Pitanga Structural High |
title_short |
Mechanical stratigraphy and structural control of oil accumulations in fractured carbonates of the Irati Formation, Parana Basin, Brazil |
title_full |
Mechanical stratigraphy and structural control of oil accumulations in fractured carbonates of the Irati Formation, Parana Basin, Brazil |
title_fullStr |
Mechanical stratigraphy and structural control of oil accumulations in fractured carbonates of the Irati Formation, Parana Basin, Brazil |
title_full_unstemmed |
Mechanical stratigraphy and structural control of oil accumulations in fractured carbonates of the Irati Formation, Parana Basin, Brazil |
title_sort |
Mechanical stratigraphy and structural control of oil accumulations in fractured carbonates of the Irati Formation, Parana Basin, Brazil |
author |
Cerri, Rodrigo Irineu [UNESP] |
author_facet |
Cerri, Rodrigo Irineu [UNESP] Luvizotto, George Luiz [UNESP] Wohnrath Tognoli, Francisco Manoel Warren, Lucas Verissimo [UNESP] Okubo, Juliana [UNESP] Morales, Norberto [UNESP] |
author_role |
author |
author2 |
Luvizotto, George Luiz [UNESP] Wohnrath Tognoli, Francisco Manoel Warren, Lucas Verissimo [UNESP] Okubo, Juliana [UNESP] Morales, Norberto [UNESP] |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Univ Vale Rio dos Sinos |
dc.contributor.author.fl_str_mv |
Cerri, Rodrigo Irineu [UNESP] Luvizotto, George Luiz [UNESP] Wohnrath Tognoli, Francisco Manoel Warren, Lucas Verissimo [UNESP] Okubo, Juliana [UNESP] Morales, Norberto [UNESP] |
dc.subject.por.fl_str_mv |
mechanical stratigraphy planar surfaces fracture connection Pitanga Structural High |
topic |
mechanical stratigraphy planar surfaces fracture connection Pitanga Structural High |
description |
Fracturing analysis of low-permeability rocks as reservoir analogs have increased in recent years. The main mechanism involved in the development of secondary porosity in low-permeability, fine-grained limestones of the Irati Formation is fracturing. In these rocks, oil accumulates along fracture planes, vuggy porosity, microfractures, breccias, as well as bedding discontinuities. Joints represent the central element for oil migration and the connection between accumulation sites. Joints are unevenly distributed across the succession of rock types, where carbonate rocks have a much denser array of joints than shales and siltstones. From a mechanical stratigraphy point of view, limestones have a brittle behavior and constitute mechanical units. Ductile shale and siltstone are mechanical interfaces capable of blocking joint propagation. Joints running NW-SE are more effective in trespassing the mechanical interface and are, therefore, more persistent. Joints running NE-SW are less persistent because the ductile behavior of the first two shale beds above the limestone blocks their propagation. The spatial arrangement of regional NW-SE and NE-SW joints promoted reservoir connection, allowing oil migration and accumulation. The joints and oil migration (at least three phases) developed as a consequence of the Gondwana Breakup and are also associated with local pressure gradients. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-12-11T22:20:23Z 2020-12-11T22:20:23Z 2020-01-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1590/2317-4889202020190117 Brazilian Journal Of Geology. Sao Paulo: Soc Brasileira Geologia, v. 50, n. 3, 12 p., 2020. 2317-4889 http://hdl.handle.net/11449/197860 10.1590/2317-4889202020190117 S2317-48892020000300303 WOS:000552428800001 S2317-48892020000300303.pdf 5136594572347865 |
url |
http://dx.doi.org/10.1590/2317-4889202020190117 http://hdl.handle.net/11449/197860 |
identifier_str_mv |
Brazilian Journal Of Geology. Sao Paulo: Soc Brasileira Geologia, v. 50, n. 3, 12 p., 2020. 2317-4889 10.1590/2317-4889202020190117 S2317-48892020000300303 WOS:000552428800001 S2317-48892020000300303.pdf 5136594572347865 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Brazilian Journal Of Geology |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
12 application/pdf |
dc.publisher.none.fl_str_mv |
Soc Brasileira Geologia |
publisher.none.fl_str_mv |
Soc Brasileira Geologia |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
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1803047326762139648 |