A geostatistical methodology to simulate the transmissivity in a highly heterogeneous rock body based on borehole data and pumping tests

Detalhes bibliográficos
Autor(a) principal: Barbosa, Sofia
Data de Publicação: 2019
Outros Autores: Almeida, José, Chambel, António
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10362/93817
Resumo: A geostatistical methodology is developed with the aim of simulating three-dimensional grids of transmissivity. The case study is a highly heterogeneous massif rock body, mainly composed of granites and schists with distinct weathering and fracture conditions, that surrounds and is part of a former uranium mine in central Portugal. Contrasting hydraulic behaviour is given by fractured rock and a pervasively weathered rock matrix composed mainly by clay minerals. Lithology, weathering, and fracture were the geological attributes selected for simulation. Data and information were analysed in detail for their respective integration into a sequential geostatistical modelling approach. The simulation process was conditioned to local data histograms. Simulation images of transmissivity show high degrees of heterogeneity both laterally and vertically. Potential areas for high-flow propagation are restricted in number and interconnectivity is not particularly evident. Small channels, the main structures responsible for groundwater flow propagation, can be identified within the rock body.
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spelling A geostatistical methodology to simulate the transmissivity in a highly heterogeneous rock body based on borehole data and pumping tests3D fracturing modelsDirect sequential simulationGeostatisticsHeterogeneitySequential indicator simulationWater Science and TechnologyEarth and Planetary Sciences (miscellaneous)A geostatistical methodology is developed with the aim of simulating three-dimensional grids of transmissivity. The case study is a highly heterogeneous massif rock body, mainly composed of granites and schists with distinct weathering and fracture conditions, that surrounds and is part of a former uranium mine in central Portugal. Contrasting hydraulic behaviour is given by fractured rock and a pervasively weathered rock matrix composed mainly by clay minerals. Lithology, weathering, and fracture were the geological attributes selected for simulation. Data and information were analysed in detail for their respective integration into a sequential geostatistical modelling approach. The simulation process was conditioned to local data histograms. Simulation images of transmissivity show high degrees of heterogeneity both laterally and vertically. Potential areas for high-flow propagation are restricted in number and interconnectivity is not particularly evident. Small channels, the main structures responsible for groundwater flow propagation, can be identified within the rock body.GeoBioTec - Geobiociências, Geoengenharias e GeotecnologiasDCT - Departamento de Ciências da TerraRUNBarbosa, SofiaAlmeida, JoséChambel, António2022-03-31T00:31:39Z2019-01-012019-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/octet-streamhttp://hdl.handle.net/10362/93817eng1431-2174PURE: 13742048https://doi.org/10.1007/s10040-019-01980-7info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-05-22T17:43:52Zoai:run.unl.pt:10362/93817Portal AgregadorONGhttps://www.rcaap.pt/oai/openairemluisa.alvim@gmail.comopendoar:71602024-05-22T17:43:52Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv A geostatistical methodology to simulate the transmissivity in a highly heterogeneous rock body based on borehole data and pumping tests
title A geostatistical methodology to simulate the transmissivity in a highly heterogeneous rock body based on borehole data and pumping tests
spellingShingle A geostatistical methodology to simulate the transmissivity in a highly heterogeneous rock body based on borehole data and pumping tests
Barbosa, Sofia
3D fracturing models
Direct sequential simulation
Geostatistics
Heterogeneity
Sequential indicator simulation
Water Science and Technology
Earth and Planetary Sciences (miscellaneous)
title_short A geostatistical methodology to simulate the transmissivity in a highly heterogeneous rock body based on borehole data and pumping tests
title_full A geostatistical methodology to simulate the transmissivity in a highly heterogeneous rock body based on borehole data and pumping tests
title_fullStr A geostatistical methodology to simulate the transmissivity in a highly heterogeneous rock body based on borehole data and pumping tests
title_full_unstemmed A geostatistical methodology to simulate the transmissivity in a highly heterogeneous rock body based on borehole data and pumping tests
title_sort A geostatistical methodology to simulate the transmissivity in a highly heterogeneous rock body based on borehole data and pumping tests
author Barbosa, Sofia
author_facet Barbosa, Sofia
Almeida, José
Chambel, António
author_role author
author2 Almeida, José
Chambel, António
author2_role author
author
dc.contributor.none.fl_str_mv GeoBioTec - Geobiociências, Geoengenharias e Geotecnologias
DCT - Departamento de Ciências da Terra
RUN
dc.contributor.author.fl_str_mv Barbosa, Sofia
Almeida, José
Chambel, António
dc.subject.por.fl_str_mv 3D fracturing models
Direct sequential simulation
Geostatistics
Heterogeneity
Sequential indicator simulation
Water Science and Technology
Earth and Planetary Sciences (miscellaneous)
topic 3D fracturing models
Direct sequential simulation
Geostatistics
Heterogeneity
Sequential indicator simulation
Water Science and Technology
Earth and Planetary Sciences (miscellaneous)
description A geostatistical methodology is developed with the aim of simulating three-dimensional grids of transmissivity. The case study is a highly heterogeneous massif rock body, mainly composed of granites and schists with distinct weathering and fracture conditions, that surrounds and is part of a former uranium mine in central Portugal. Contrasting hydraulic behaviour is given by fractured rock and a pervasively weathered rock matrix composed mainly by clay minerals. Lithology, weathering, and fracture were the geological attributes selected for simulation. Data and information were analysed in detail for their respective integration into a sequential geostatistical modelling approach. The simulation process was conditioned to local data histograms. Simulation images of transmissivity show high degrees of heterogeneity both laterally and vertically. Potential areas for high-flow propagation are restricted in number and interconnectivity is not particularly evident. Small channels, the main structures responsible for groundwater flow propagation, can be identified within the rock body.
publishDate 2019
dc.date.none.fl_str_mv 2019-01-01
2019-01-01T00:00:00Z
2022-03-31T00:31:39Z
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://hdl.handle.net/10362/93817
url http://hdl.handle.net/10362/93817
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 1431-2174
PURE: 13742048
https://doi.org/10.1007/s10040-019-01980-7
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/octet-stream
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv mluisa.alvim@gmail.com
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