Stochastic dynamics of a drill-string with uncertain weight-on-hook
Autor(a) principal: | |
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Data de Publicação: | 2010 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Journal of the Brazilian Society of Mechanical Sciences and Engineering (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1678-58782010000300008 |
Resumo: | A drill-string is a slender structure that turns and drills into the rock in search of oil. There are many sources of uncertainties in this complex dynamical system. However, this article is concerned only with uncertainties in the weight-on-hook, which is the supporting force exerted by the hook at the top. A probabilistic model is constructed for the random variable related to the weight-on-hook using the Maximum Entropy Principle, and the random response of the system is computed through Monte Carlo simulations. The idea is to understand how the performance of the system (which is measured by the rate of penetration) is affected by the uncertainties of the weight-on-hook. The continuous system analyzed is discretized by means of the Finite Element Method and a computer code is developed to do the simulations. |
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Journal of the Brazilian Society of Mechanical Sciences and Engineering (Online) |
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Stochastic dynamics of a drill-string with uncertain weight-on-hookrandom weight-on-hookuncertainty modelingstochastic dynamicsdrill-string dynamicsreduced modelsA drill-string is a slender structure that turns and drills into the rock in search of oil. There are many sources of uncertainties in this complex dynamical system. However, this article is concerned only with uncertainties in the weight-on-hook, which is the supporting force exerted by the hook at the top. A probabilistic model is constructed for the random variable related to the weight-on-hook using the Maximum Entropy Principle, and the random response of the system is computed through Monte Carlo simulations. The idea is to understand how the performance of the system (which is measured by the rate of penetration) is affected by the uncertainties of the weight-on-hook. The continuous system analyzed is discretized by means of the Finite Element Method and a computer code is developed to do the simulations.Associação Brasileira de Engenharia e Ciências Mecânicas - ABCM2010-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1678-58782010000300008Journal of the Brazilian Society of Mechanical Sciences and Engineering v.32 n.3 2010reponame:Journal of the Brazilian Society of Mechanical Sciences and Engineering (Online)instname:Associação Brasileira de Engenharia e Ciências Mecânicas (ABCM)instacron:ABCM10.1590/S1678-58782010000300008info:eu-repo/semantics/openAccessRitto,T. G.Soize,C.Sampaio,Rubenseng2010-12-01T00:00:00Zoai:scielo:S1678-58782010000300008Revistahttps://www.scielo.br/j/jbsmse/https://old.scielo.br/oai/scielo-oai.php||abcm@abcm.org.br1806-36911678-5878opendoar:2010-12-01T00:00Journal of the Brazilian Society of Mechanical Sciences and Engineering (Online) - Associação Brasileira de Engenharia e Ciências Mecânicas (ABCM)false |
dc.title.none.fl_str_mv |
Stochastic dynamics of a drill-string with uncertain weight-on-hook |
title |
Stochastic dynamics of a drill-string with uncertain weight-on-hook |
spellingShingle |
Stochastic dynamics of a drill-string with uncertain weight-on-hook Ritto,T. G. random weight-on-hook uncertainty modeling stochastic dynamics drill-string dynamics reduced models |
title_short |
Stochastic dynamics of a drill-string with uncertain weight-on-hook |
title_full |
Stochastic dynamics of a drill-string with uncertain weight-on-hook |
title_fullStr |
Stochastic dynamics of a drill-string with uncertain weight-on-hook |
title_full_unstemmed |
Stochastic dynamics of a drill-string with uncertain weight-on-hook |
title_sort |
Stochastic dynamics of a drill-string with uncertain weight-on-hook |
author |
Ritto,T. G. |
author_facet |
Ritto,T. G. Soize,C. Sampaio,Rubens |
author_role |
author |
author2 |
Soize,C. Sampaio,Rubens |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Ritto,T. G. Soize,C. Sampaio,Rubens |
dc.subject.por.fl_str_mv |
random weight-on-hook uncertainty modeling stochastic dynamics drill-string dynamics reduced models |
topic |
random weight-on-hook uncertainty modeling stochastic dynamics drill-string dynamics reduced models |
description |
A drill-string is a slender structure that turns and drills into the rock in search of oil. There are many sources of uncertainties in this complex dynamical system. However, this article is concerned only with uncertainties in the weight-on-hook, which is the supporting force exerted by the hook at the top. A probabilistic model is constructed for the random variable related to the weight-on-hook using the Maximum Entropy Principle, and the random response of the system is computed through Monte Carlo simulations. The idea is to understand how the performance of the system (which is measured by the rate of penetration) is affected by the uncertainties of the weight-on-hook. The continuous system analyzed is discretized by means of the Finite Element Method and a computer code is developed to do the simulations. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-09-01 |
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=S1678-58782010000300008 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1678-58782010000300008 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1678-58782010000300008 |
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 |
Associação Brasileira de Engenharia e Ciências Mecânicas - ABCM |
publisher.none.fl_str_mv |
Associação Brasileira de Engenharia e Ciências Mecânicas - ABCM |
dc.source.none.fl_str_mv |
Journal of the Brazilian Society of Mechanical Sciences and Engineering v.32 n.3 2010 reponame:Journal of the Brazilian Society of Mechanical Sciences and Engineering (Online) instname:Associação Brasileira de Engenharia e Ciências Mecânicas (ABCM) instacron:ABCM |
instname_str |
Associação Brasileira de Engenharia e Ciências Mecânicas (ABCM) |
instacron_str |
ABCM |
institution |
ABCM |
reponame_str |
Journal of the Brazilian Society of Mechanical Sciences and Engineering (Online) |
collection |
Journal of the Brazilian Society of Mechanical Sciences and Engineering (Online) |
repository.name.fl_str_mv |
Journal of the Brazilian Society of Mechanical Sciences and Engineering (Online) - Associação Brasileira de Engenharia e Ciências Mecânicas (ABCM) |
repository.mail.fl_str_mv |
||abcm@abcm.org.br |
_version_ |
1754734681512738816 |