Rheological and composition analyses of CO2 gas hydrates

Detalhes bibliográficos
Autor(a) principal: Sandoval, Gustavo Alonso Barrientos
Data de Publicação: 2019
Tipo de documento: Tese
Idioma: eng
Título da fonte: Repositório Institucional da UFRJ
Texto Completo: http://hdl.handle.net/11422/13528
Resumo: In the present work, it is investigated the rheological behavior of CO2 hydrates form from water-in-oil emulsions since high concentrations of this gas have been reported in the Brazilian Pre-salt oil wells, with large potential to form hydrates. To investigate this fact, a sequence of tests was conducted using an assembly composed by a rheometer, a magnetic pressure cell, and a high-pressure system, where similar pressure and temperature conditions were applied to those found in the petroleum industry. The novel results displayed in curves of viscosity over time are revealed in two main sections. Firstly, it is shown the effect produced by the shear rate, water volume fraction and salt impact on CO2 hydrates. It is also investigated the ability of the reconstruction of the CO2 hydrates and its memory effect. Secondly, results that indicate the effect produced on the induction time of hydrate formation by the addition of gas condensate and by the addition of small amounts of powder asphaltenes in the water-in-oil emulsions are shown. These interfacially active particles seem to act like kinetic hydrate inhibitors.
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spelling Rheological and composition analyses of CO2 gas hydratesCO2 gas hydratesRheologyWater in oil emulsionsHigh pressure cellCNPQ::ENGENHARIAS::ENGENHARIA MECANICAIn the present work, it is investigated the rheological behavior of CO2 hydrates form from water-in-oil emulsions since high concentrations of this gas have been reported in the Brazilian Pre-salt oil wells, with large potential to form hydrates. To investigate this fact, a sequence of tests was conducted using an assembly composed by a rheometer, a magnetic pressure cell, and a high-pressure system, where similar pressure and temperature conditions were applied to those found in the petroleum industry. The novel results displayed in curves of viscosity over time are revealed in two main sections. Firstly, it is shown the effect produced by the shear rate, water volume fraction and salt impact on CO2 hydrates. It is also investigated the ability of the reconstruction of the CO2 hydrates and its memory effect. Secondly, results that indicate the effect produced on the induction time of hydrate formation by the addition of gas condensate and by the addition of small amounts of powder asphaltenes in the water-in-oil emulsions are shown. These interfacially active particles seem to act like kinetic hydrate inhibitors.No presente trabalho é pesquisado o comportamento reológico dos hidratos de CO2 formados a partir de emulsões de água em óleo, pois grandes concentrações deste gás foram reportados nos poços de petróleo do Pré-sal brasileiro, com grande potencial para formar hidratos. Para investigar este fato, realizou-se uma sequência de testes utilizando uma montagem composta por um reômetro, uma célula de pressão magnética e um sistema de alta pressão, onde foram aplicadas condições de pressão e temperatura similares às encontradas na indústria do petróleo. Os resultados inéditos exibidos em curvas de viscosidade ao longo do tempo são expostos em duas seções principais. Primeiramente, é mostrado o efeito produzido pela taxa de cisalhamento, a fração de volume da água e o impacto do sal nos hidratos de CO2. Também, é investigado a capacidade de reconstrução dos hidratos de CO2 e seu efeito de memória. Em segundo lugar, são mostrados alguns resultados que indicam o efeito produzido no tempo de indução da formação de hidratos pela adição de gás condensado e pela adição de pequenas quantidades de asfaltenos em pó nas emulsões de água em óleo. Parece ser que essas partículas ativas interfacialmente atuam como inibidores cinéticos de hidratos.Universidade Federal do Rio de JaneiroBrasilInstituto Alberto Luiz Coimbra de Pós-Graduação e Pesquisa de EngenhariaPrograma de Pós-Graduação em Engenharia MecânicaUFRJThompson, Roney Leonhttp://lattes.cnpq.br/4870003562574001http://lattes.cnpq.br/2780931080096429Soares, Edson Joséhttp://lattes.cnpq.br/4485206584533650Duda, Fernando PereiraCruz, Daniel Onofre de AlmeidaSouza, Marcio Nele deMendes, Paulo Roberto de SouzaSandoval, Gustavo Alonso Barrientos2021-01-19T21:54:19Z2023-12-21T03:07:21Z2019-03info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesishttp://hdl.handle.net/11422/13528enginfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRJinstname:Universidade Federal do Rio de Janeiro (UFRJ)instacron:UFRJ2023-12-21T03:07:21Zoai:pantheon.ufrj.br:11422/13528Repositório InstitucionalPUBhttp://www.pantheon.ufrj.br/oai/requestpantheon@sibi.ufrj.bropendoar:2023-12-21T03:07:21Repositório Institucional da UFRJ - Universidade Federal do Rio de Janeiro (UFRJ)false
dc.title.none.fl_str_mv Rheological and composition analyses of CO2 gas hydrates
title Rheological and composition analyses of CO2 gas hydrates
spellingShingle Rheological and composition analyses of CO2 gas hydrates
Sandoval, Gustavo Alonso Barrientos
CO2 gas hydrates
Rheology
Water in oil emulsions
High pressure cell
CNPQ::ENGENHARIAS::ENGENHARIA MECANICA
title_short Rheological and composition analyses of CO2 gas hydrates
title_full Rheological and composition analyses of CO2 gas hydrates
title_fullStr Rheological and composition analyses of CO2 gas hydrates
title_full_unstemmed Rheological and composition analyses of CO2 gas hydrates
title_sort Rheological and composition analyses of CO2 gas hydrates
author Sandoval, Gustavo Alonso Barrientos
author_facet Sandoval, Gustavo Alonso Barrientos
author_role author
dc.contributor.none.fl_str_mv Thompson, Roney Leon
http://lattes.cnpq.br/4870003562574001
http://lattes.cnpq.br/2780931080096429
Soares, Edson José
http://lattes.cnpq.br/4485206584533650
Duda, Fernando Pereira
Cruz, Daniel Onofre de Almeida
Souza, Marcio Nele de
Mendes, Paulo Roberto de Souza
dc.contributor.author.fl_str_mv Sandoval, Gustavo Alonso Barrientos
dc.subject.por.fl_str_mv CO2 gas hydrates
Rheology
Water in oil emulsions
High pressure cell
CNPQ::ENGENHARIAS::ENGENHARIA MECANICA
topic CO2 gas hydrates
Rheology
Water in oil emulsions
High pressure cell
CNPQ::ENGENHARIAS::ENGENHARIA MECANICA
description In the present work, it is investigated the rheological behavior of CO2 hydrates form from water-in-oil emulsions since high concentrations of this gas have been reported in the Brazilian Pre-salt oil wells, with large potential to form hydrates. To investigate this fact, a sequence of tests was conducted using an assembly composed by a rheometer, a magnetic pressure cell, and a high-pressure system, where similar pressure and temperature conditions were applied to those found in the petroleum industry. The novel results displayed in curves of viscosity over time are revealed in two main sections. Firstly, it is shown the effect produced by the shear rate, water volume fraction and salt impact on CO2 hydrates. It is also investigated the ability of the reconstruction of the CO2 hydrates and its memory effect. Secondly, results that indicate the effect produced on the induction time of hydrate formation by the addition of gas condensate and by the addition of small amounts of powder asphaltenes in the water-in-oil emulsions are shown. These interfacially active particles seem to act like kinetic hydrate inhibitors.
publishDate 2019
dc.date.none.fl_str_mv 2019-03
2021-01-19T21:54:19Z
2023-12-21T03:07:21Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/doctoralThesis
format doctoralThesis
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/11422/13528
url http://hdl.handle.net/11422/13528
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Universidade Federal do Rio de Janeiro
Brasil
Instituto Alberto Luiz Coimbra de Pós-Graduação e Pesquisa de Engenharia
Programa de Pós-Graduação em Engenharia Mecânica
UFRJ
publisher.none.fl_str_mv Universidade Federal do Rio de Janeiro
Brasil
Instituto Alberto Luiz Coimbra de Pós-Graduação e Pesquisa de Engenharia
Programa de Pós-Graduação em Engenharia Mecânica
UFRJ
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFRJ
instname:Universidade Federal do Rio de Janeiro (UFRJ)
instacron:UFRJ
instname_str Universidade Federal do Rio de Janeiro (UFRJ)
instacron_str UFRJ
institution UFRJ
reponame_str Repositório Institucional da UFRJ
collection Repositório Institucional da UFRJ
repository.name.fl_str_mv Repositório Institucional da UFRJ - Universidade Federal do Rio de Janeiro (UFRJ)
repository.mail.fl_str_mv pantheon@sibi.ufrj.br
_version_ 1815456012165971968

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