Internal magnetic field gradients in paramagnetic shale pores

Autores
Ramia, Máximo Elías; Martín, Carlos Alberto
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Fil: Ramia, Máximo Elías. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía, Física y Computación; Argentina.
Fil: Martín, Carlos Alberto. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía, Física y Computación; Argentina.
The present work involves a comprehensive study to provide a theoretical model of the internal magnetic field gradients, present in paramagnetic shale pores, to explain the main relaxation features observed by nuclear magnetic resonance transversal relaxation measurements. In the systematic analysis process of relaxation data it is necessary to know up to what extent the magnetic field gradients are generated by the logging tool and/or arise internally in the rock due to their paramagnetic impurities content. The physical model to explain the relaxation features is based on the calculation of field gradients in a planar pore with and without relaxatives walls. The results reproduce the features of the relaxation parameters in pores due to paramagnetic and tortuous walls. The mechanism that drives the relaxation process is governed by anomalous diffusion within micro-pores. These relaxation processes arise from the interactions between the protons, belonging to the liquid molecules and the pore walls, whose structure is characterized by both large tortuosity and abundance of paramagnetic impurities, giving rise to local strong time dependent magnetic field gradients. The theoretical results are compared with those obtained experimentally to validate the relaxation model. The experimental data were gathered from a sample belonging to the “Vaca Muerta” formation of the Neuquén basin, Argentina.
info:eu-repo/semantics/publishedVersion
Fil: Ramia, Máximo Elías. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía, Física y Computación; Argentina.
Fil: Martín, Carlos Alberto. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía, Física y Computación; Argentina.
Física de los Materiales Condensados
Materia
Nuclear magnetic resonance
Petrophysics
Shales
Nivel de accesibilidad
acceso abierto
Condiciones de uso
Repositorio
Repositorio Digital Universitario (UNC)
Institución
Universidad Nacional de Córdoba
OAI Identificador
oai:rdu.unc.edu.ar:11086/562617
Acceder
id RDUUNC_c04afa2186dca9e70fce1e3ed1556297
oai_identifier_str oai:rdu.unc.edu.ar:11086/562617
network_acronym_str RDUUNC
repository_id_str 2572
network_name_str Repositorio Digital Universitario (UNC)
spelling Internal magnetic field gradients in paramagnetic shale poresRamia, Máximo ElíasMartín, Carlos AlbertoNuclear magnetic resonancePetrophysicsShalesFil: Ramia, Máximo Elías. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía, Física y Computación; Argentina.Fil: Martín, Carlos Alberto. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía, Física y Computación; Argentina.The present work involves a comprehensive study to provide a theoretical model of the internal magnetic field gradients, present in paramagnetic shale pores, to explain the main relaxation features observed by nuclear magnetic resonance transversal relaxation measurements. In the systematic analysis process of relaxation data it is necessary to know up to what extent the magnetic field gradients are generated by the logging tool and/or arise internally in the rock due to their paramagnetic impurities content. The physical model to explain the relaxation features is based on the calculation of field gradients in a planar pore with and without relaxatives walls. The results reproduce the features of the relaxation parameters in pores due to paramagnetic and tortuous walls. The mechanism that drives the relaxation process is governed by anomalous diffusion within micro-pores. These relaxation processes arise from the interactions between the protons, belonging to the liquid molecules and the pore walls, whose structure is characterized by both large tortuosity and abundance of paramagnetic impurities, giving rise to local strong time dependent magnetic field gradients. The theoretical results are compared with those obtained experimentally to validate the relaxation model. The experimental data were gathered from a sample belonging to the “Vaca Muerta” formation of the Neuquén basin, Argentina.info:eu-repo/semantics/publishedVersionFil: Ramia, Máximo Elías. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía, Física y Computación; Argentina.Fil: Martín, Carlos Alberto. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía, Física y Computación; Argentina.Física de los Materiales Condensados2017info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfRamia, M. E. y Martín, C. A. (2017). Internal magnetic field gradients in paramagnetic shale pores. Applied Magnetic Resonance, 48 (10), 1075–1091. https://doi.org/10.1007/s00723-017-0922-90937-9347http://hdl.handle.net/11086/5626171613-7507https://doi.org/10.1007/s00723-017-0922-9enginfo:eu-repo/semantics/openAccessreponame:Repositorio Digital Universitario (UNC)instname:Universidad Nacional de Córdobainstacron:UNC2026-10-01T10:22:08Zoai:rdu.unc.edu.ar:11086/562617Institucionalhttps://rdu.unc.edu.ar/Universidad públicaNo correspondehttp://rdu.unc.edu.ar/oai/snrdoca.unc@gmail.comArgentinaNo correspondeNo correspondeNo correspondeopendoar:25722026-10-01 10:22:09.948Repositorio Digital Universitario (UNC) - Universidad Nacional de Córdobafalse
dc.title.none.fl_str_mv Internal magnetic field gradients in paramagnetic shale pores
title Internal magnetic field gradients in paramagnetic shale pores
spellingShingle Internal magnetic field gradients in paramagnetic shale pores
Ramia, Máximo Elías
Nuclear magnetic resonance
Petrophysics
Shales
title_short Internal magnetic field gradients in paramagnetic shale pores
title_full Internal magnetic field gradients in paramagnetic shale pores
title_fullStr Internal magnetic field gradients in paramagnetic shale pores
title_full_unstemmed Internal magnetic field gradients in paramagnetic shale pores
title_sort Internal magnetic field gradients in paramagnetic shale pores
dc.creator.none.fl_str_mv Ramia, Máximo Elías
Martín, Carlos Alberto
author Ramia, Máximo Elías
author_facet Ramia, Máximo Elías
Martín, Carlos Alberto
author_role author
author2 Martín, Carlos Alberto
author2_role author
dc.subject.none.fl_str_mv Nuclear magnetic resonance
Petrophysics
Shales
topic Nuclear magnetic resonance
Petrophysics
Shales
dc.description.none.fl_txt_mv Fil: Ramia, Máximo Elías. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía, Física y Computación; Argentina.
Fil: Martín, Carlos Alberto. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía, Física y Computación; Argentina.
The present work involves a comprehensive study to provide a theoretical model of the internal magnetic field gradients, present in paramagnetic shale pores, to explain the main relaxation features observed by nuclear magnetic resonance transversal relaxation measurements. In the systematic analysis process of relaxation data it is necessary to know up to what extent the magnetic field gradients are generated by the logging tool and/or arise internally in the rock due to their paramagnetic impurities content. The physical model to explain the relaxation features is based on the calculation of field gradients in a planar pore with and without relaxatives walls. The results reproduce the features of the relaxation parameters in pores due to paramagnetic and tortuous walls. The mechanism that drives the relaxation process is governed by anomalous diffusion within micro-pores. These relaxation processes arise from the interactions between the protons, belonging to the liquid molecules and the pore walls, whose structure is characterized by both large tortuosity and abundance of paramagnetic impurities, giving rise to local strong time dependent magnetic field gradients. The theoretical results are compared with those obtained experimentally to validate the relaxation model. The experimental data were gathered from a sample belonging to the “Vaca Muerta” formation of the Neuquén basin, Argentina.
info:eu-repo/semantics/publishedVersion
Fil: Ramia, Máximo Elías. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía, Física y Computación; Argentina.
Fil: Martín, Carlos Alberto. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía, Física y Computación; Argentina.
Física de los Materiales Condensados
description Fil: Ramia, Máximo Elías. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía, Física y Computación; Argentina.
publishDate 2017
dc.date.none.fl_str_mv 2017
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
status_str publishedVersion
format article
dc.identifier.none.fl_str_mv Ramia, M. E. y Martín, C. A. (2017). Internal magnetic field gradients in paramagnetic shale pores. Applied Magnetic Resonance, 48 (10), 1075–1091. https://doi.org/10.1007/s00723-017-0922-9
0937-9347
http://hdl.handle.net/11086/562617
1613-7507
https://doi.org/10.1007/s00723-017-0922-9
identifier_str_mv Ramia, M. E. y Martín, C. A. (2017). Internal magnetic field gradients in paramagnetic shale pores. Applied Magnetic Resonance, 48 (10), 1075–1091. https://doi.org/10.1007/s00723-017-0922-9
0937-9347
1613-7507
url http://hdl.handle.net/11086/562617
https://doi.org/10.1007/s00723-017-0922-9
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Repositorio Digital Universitario (UNC)
instname:Universidad Nacional de Córdoba
instacron:UNC
reponame_str Repositorio Digital Universitario (UNC)
collection Repositorio Digital Universitario (UNC)
instname_str Universidad Nacional de Córdoba
instacron_str UNC
institution UNC
repository.name.fl_str_mv Repositorio Digital Universitario (UNC) - Universidad Nacional de Córdoba
repository.mail.fl_str_mv oca.unc@gmail.com
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score 12.854657

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