Sensitivity analysis of hydraulic properties of naturally fractured reservoirs
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , |
Tipo de documento: | Artigo de conferência |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://hdl.handle.net/11449/221476 |
Resumo: | This work aims to apply a sensitivity analysis to determine the influence of natural fractures in a cross section of rock reservoir cell, assessing the equivalent permeability of the medium. Using finite elements with high aspect ratio to represent explicitly the fractures, a single- phase hydraulic problem was evaluated. A fractional factorial design was proposed, in order to avoid the full factorial design, which would require an unviable number of experimental runs. Linear regressions and hypothesis tests were performed to identify the most influential fractures. Second order response surfaces were constructed to estimate the response variable, considering only the most important the fractures. A numerical example is presented, which allows concluding that the most influential fractures are those that cross completely the section along its height, especially those that have greater aperture. In addition, there are some fractures that can be disregard into the discrete fractures models, reducing considerably the computational costs involved on hydraulic simulations of petroleum industry. |
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Repositório Institucional da UNESP |
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Sensitivity analysis of hydraulic properties of naturally fractured reservoirsDiscrete fracture modelElements with high aspect ratioNatural fracturesRock permeabilitySensitivity analysisThis work aims to apply a sensitivity analysis to determine the influence of natural fractures in a cross section of rock reservoir cell, assessing the equivalent permeability of the medium. Using finite elements with high aspect ratio to represent explicitly the fractures, a single- phase hydraulic problem was evaluated. A fractional factorial design was proposed, in order to avoid the full factorial design, which would require an unviable number of experimental runs. Linear regressions and hypothesis tests were performed to identify the most influential fractures. Second order response surfaces were constructed to estimate the response variable, considering only the most important the fractures. A numerical example is presented, which allows concluding that the most influential fractures are those that cross completely the section along its height, especially those that have greater aperture. In addition, there are some fractures that can be disregard into the discrete fractures models, reducing considerably the computational costs involved on hydraulic simulations of petroleum industry.São Paulo State UniversitySão Paulo State UniversityUniversidade Estadual Paulista (UNESP)Assis, H. B. [UNESP]Cleto, P. R. [UNESP]Rodrigues, R. A. [UNESP]Manzoli, O. L. [UNESP]Nogueira, C. G. [UNESP]2022-04-28T19:28:38Z2022-04-28T19:28:38Z2020-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObject3335-3344Rock Mechanics for Natural Resources and Infrastructure Development- Proceedings of the 14th International Congress on Rock Mechanics and Rock Engineering, ISRM 2019, p. 3335-3344.http://hdl.handle.net/11449/2214762-s2.0-85084660447Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengRock Mechanics for Natural Resources and Infrastructure Development- Proceedings of the 14th International Congress on Rock Mechanics and Rock Engineering, ISRM 2019info:eu-repo/semantics/openAccess2022-04-28T19:28:38Zoai:repositorio.unesp.br:11449/221476Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462022-04-28T19:28:38Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Sensitivity analysis of hydraulic properties of naturally fractured reservoirs |
title |
Sensitivity analysis of hydraulic properties of naturally fractured reservoirs |
spellingShingle |
Sensitivity analysis of hydraulic properties of naturally fractured reservoirs Assis, H. B. [UNESP] Discrete fracture model Elements with high aspect ratio Natural fractures Rock permeability Sensitivity analysis |
title_short |
Sensitivity analysis of hydraulic properties of naturally fractured reservoirs |
title_full |
Sensitivity analysis of hydraulic properties of naturally fractured reservoirs |
title_fullStr |
Sensitivity analysis of hydraulic properties of naturally fractured reservoirs |
title_full_unstemmed |
Sensitivity analysis of hydraulic properties of naturally fractured reservoirs |
title_sort |
Sensitivity analysis of hydraulic properties of naturally fractured reservoirs |
author |
Assis, H. B. [UNESP] |
author_facet |
Assis, H. B. [UNESP] Cleto, P. R. [UNESP] Rodrigues, R. A. [UNESP] Manzoli, O. L. [UNESP] Nogueira, C. G. [UNESP] |
author_role |
author |
author2 |
Cleto, P. R. [UNESP] Rodrigues, R. A. [UNESP] Manzoli, O. L. [UNESP] Nogueira, C. G. [UNESP] |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) |
dc.contributor.author.fl_str_mv |
Assis, H. B. [UNESP] Cleto, P. R. [UNESP] Rodrigues, R. A. [UNESP] Manzoli, O. L. [UNESP] Nogueira, C. G. [UNESP] |
dc.subject.por.fl_str_mv |
Discrete fracture model Elements with high aspect ratio Natural fractures Rock permeability Sensitivity analysis |
topic |
Discrete fracture model Elements with high aspect ratio Natural fractures Rock permeability Sensitivity analysis |
description |
This work aims to apply a sensitivity analysis to determine the influence of natural fractures in a cross section of rock reservoir cell, assessing the equivalent permeability of the medium. Using finite elements with high aspect ratio to represent explicitly the fractures, a single- phase hydraulic problem was evaluated. A fractional factorial design was proposed, in order to avoid the full factorial design, which would require an unviable number of experimental runs. Linear regressions and hypothesis tests were performed to identify the most influential fractures. Second order response surfaces were constructed to estimate the response variable, considering only the most important the fractures. A numerical example is presented, which allows concluding that the most influential fractures are those that cross completely the section along its height, especially those that have greater aperture. In addition, there are some fractures that can be disregard into the discrete fractures models, reducing considerably the computational costs involved on hydraulic simulations of petroleum industry. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-01-01 2022-04-28T19:28:38Z 2022-04-28T19:28:38Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/conferenceObject |
format |
conferenceObject |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
Rock Mechanics for Natural Resources and Infrastructure Development- Proceedings of the 14th International Congress on Rock Mechanics and Rock Engineering, ISRM 2019, p. 3335-3344. http://hdl.handle.net/11449/221476 2-s2.0-85084660447 |
identifier_str_mv |
Rock Mechanics for Natural Resources and Infrastructure Development- Proceedings of the 14th International Congress on Rock Mechanics and Rock Engineering, ISRM 2019, p. 3335-3344. 2-s2.0-85084660447 |
url |
http://hdl.handle.net/11449/221476 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Rock Mechanics for Natural Resources and Infrastructure Development- Proceedings of the 14th International Congress on Rock Mechanics and Rock Engineering, ISRM 2019 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
3335-3344 |
dc.source.none.fl_str_mv |
Scopus 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 |
|
_version_ |
1799965336029626368 |