Investigation of asphaltene precipitation in miscible gas injection processes: experimental study and modeling
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Brazilian Journal of Chemical Engineering |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322012000300022 |
Resumo: | Asphaltene precipitation during natural depletion and miscible gas injection is a common problem in oilfields throughout the world. In this work, static precipitation tests are conducted to investigate the effects of pressure, temperature and gas type and concentration on asphaltene instability. Three different oil samples have been studied under reservoir conditions with/without nitrogen and methane injection. Besides applying common thermodynamic models, a new scaling equation is presented to predict asphaltene precipitation under HPHT gas injection. Extensive published data from the literature are also used in model development. The scaling approach is attractive because it is simple and complex asphaltene properties are not involved in the calculations. Moreover, the proposed model provides universal parameters for different fluid samples over a wide range of pressure and temperature that makes it novel for evaluation of future gas injection projects when simple PVT data are available. |
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Brazilian Journal of Chemical Engineering |
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spelling |
Investigation of asphaltene precipitation in miscible gas injection processes: experimental study and modelingNitrogen injectionAsphaltene precipitationPure solid modelingScaling equationAsphaltene precipitation during natural depletion and miscible gas injection is a common problem in oilfields throughout the world. In this work, static precipitation tests are conducted to investigate the effects of pressure, temperature and gas type and concentration on asphaltene instability. Three different oil samples have been studied under reservoir conditions with/without nitrogen and methane injection. Besides applying common thermodynamic models, a new scaling equation is presented to predict asphaltene precipitation under HPHT gas injection. Extensive published data from the literature are also used in model development. The scaling approach is attractive because it is simple and complex asphaltene properties are not involved in the calculations. Moreover, the proposed model provides universal parameters for different fluid samples over a wide range of pressure and temperature that makes it novel for evaluation of future gas injection projects when simple PVT data are available.Brazilian Society of Chemical Engineering2012-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322012000300022Brazilian Journal of Chemical Engineering v.29 n.3 2012reponame:Brazilian Journal of Chemical Engineeringinstname:Associação Brasileira de Engenharia Química (ABEQ)instacron:ABEQ10.1590/S0104-66322012000300022info:eu-repo/semantics/openAccessMoradi,S.Dabiri,M.Dabir,B.Rashtchian,D.Emadi,M. A.eng2012-10-25T00:00:00Zoai:scielo:S0104-66322012000300022Revistahttps://www.scielo.br/j/bjce/https://old.scielo.br/oai/scielo-oai.phprgiudici@usp.br||rgiudici@usp.br1678-43830104-6632opendoar:2012-10-25T00:00Brazilian Journal of Chemical Engineering - Associação Brasileira de Engenharia Química (ABEQ)false |
dc.title.none.fl_str_mv |
Investigation of asphaltene precipitation in miscible gas injection processes: experimental study and modeling |
title |
Investigation of asphaltene precipitation in miscible gas injection processes: experimental study and modeling |
spellingShingle |
Investigation of asphaltene precipitation in miscible gas injection processes: experimental study and modeling Moradi,S. Nitrogen injection Asphaltene precipitation Pure solid modeling Scaling equation |
title_short |
Investigation of asphaltene precipitation in miscible gas injection processes: experimental study and modeling |
title_full |
Investigation of asphaltene precipitation in miscible gas injection processes: experimental study and modeling |
title_fullStr |
Investigation of asphaltene precipitation in miscible gas injection processes: experimental study and modeling |
title_full_unstemmed |
Investigation of asphaltene precipitation in miscible gas injection processes: experimental study and modeling |
title_sort |
Investigation of asphaltene precipitation in miscible gas injection processes: experimental study and modeling |
author |
Moradi,S. |
author_facet |
Moradi,S. Dabiri,M. Dabir,B. Rashtchian,D. Emadi,M. A. |
author_role |
author |
author2 |
Dabiri,M. Dabir,B. Rashtchian,D. Emadi,M. A. |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Moradi,S. Dabiri,M. Dabir,B. Rashtchian,D. Emadi,M. A. |
dc.subject.por.fl_str_mv |
Nitrogen injection Asphaltene precipitation Pure solid modeling Scaling equation |
topic |
Nitrogen injection Asphaltene precipitation Pure solid modeling Scaling equation |
description |
Asphaltene precipitation during natural depletion and miscible gas injection is a common problem in oilfields throughout the world. In this work, static precipitation tests are conducted to investigate the effects of pressure, temperature and gas type and concentration on asphaltene instability. Three different oil samples have been studied under reservoir conditions with/without nitrogen and methane injection. Besides applying common thermodynamic models, a new scaling equation is presented to predict asphaltene precipitation under HPHT gas injection. Extensive published data from the literature are also used in model development. The scaling approach is attractive because it is simple and complex asphaltene properties are not involved in the calculations. Moreover, the proposed model provides universal parameters for different fluid samples over a wide range of pressure and temperature that makes it novel for evaluation of future gas injection projects when simple PVT data are available. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-09-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322012000300022 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322012000300022 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0104-66322012000300022 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Brazilian Society of Chemical Engineering |
publisher.none.fl_str_mv |
Brazilian Society of Chemical Engineering |
dc.source.none.fl_str_mv |
Brazilian Journal of Chemical Engineering v.29 n.3 2012 reponame:Brazilian Journal of Chemical Engineering instname:Associação Brasileira de Engenharia Química (ABEQ) instacron:ABEQ |
instname_str |
Associação Brasileira de Engenharia Química (ABEQ) |
instacron_str |
ABEQ |
institution |
ABEQ |
reponame_str |
Brazilian Journal of Chemical Engineering |
collection |
Brazilian Journal of Chemical Engineering |
repository.name.fl_str_mv |
Brazilian Journal of Chemical Engineering - Associação Brasileira de Engenharia Química (ABEQ) |
repository.mail.fl_str_mv |
rgiudici@usp.br||rgiudici@usp.br |
_version_ |
1754213173850800128 |