The Use of High Energies Radiations to Characterise Solid-Liquid Systems

Arouca, Fábio de Oliveira; Damasceno, João Jorge Ribeiro

doi:10.4028/0-87849-984-9.49

Cited by 2 publications

(14 citation statements)

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“…Gamma-ray attenuation measurements is a technique used to obtain indirect volumetric concentration of solids in batch sedimentation tests without interfering in the configuration and stability of the medium. This technique was applied in studies of gravitational sedimentation in Newtonian fluids [18][19][20] and laboratory produced shearthinning fluids [16]. The radioisotope application unit, represented by the flow chart of Figure 1, consisted of a radiation targeting/ detection system coupled to a metal structure.…”

Section: Gamma-ray Attenuation Techniquementioning

confidence: 99%

“…Determining the constitutive law of a fluid is a characterization very important to maintain the process security [6]. The determination of a constitutive equation for pressure on solids (P s ) started with an adjustment of the values of volumetric solids concentration in the sediment as a function of the monitoring position, according to Equation (4) [20].…”

Section: Pressure On Solidsmentioning

confidence: 99%

“…We also considered the flow through the unidimensional, permanent, slow porous medium and tension on solids as a function of the local porosity. We did not consider the inertial terms of the equation of motion for solids [20].…”

Section: Pressure On Solidsmentioning

confidence: 99%

“…Thus, assuming that the medium was static, we used the following expression for pressure on solids [20], (Eq. 5):…”

Section: Pressure On Solidsmentioning

confidence: 99%

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Study on the stability of a shear-thinning suspension used in oil well drilling

Fagundes

Santos

Damasceno

et al. 2018

Oil & Gas Science and Technology - Rev. IFP Energies nouvel

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In order to avoid solid-liquid gravitational separation of particles in the drilling fluid and cuttings generated in this process, the oil industry has been developing drilling fluids with shear-thinning and thixotropic characteristics. In case of operational stops in the drilling process, the intense sedimentation of these particles can damage the equipment used and the well. In this context, this study simulated an operational stop to obtain information about stability of solids in a paraffin-based suspension with time-dependent shear-thinning behavior, which has already been used in current drilling processes. A long-term test using gamma-ray attenuation technique identified the separation dynamics of a set of micrometric particles belonging to and incorporated into the drilling fluid during operation. This test verified the typical regions of gravitational sedimentation and, through constant concentration curves, indicated that the sedimentation process did not occur at a constant rate. This study also proposed a constitutive equation for pressure on solids.

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Section: Gamma-ray Attenuation Techniquementioning

confidence: 99%

Section: Pressure On Solidsmentioning

confidence: 99%

Section: Pressure On Solidsmentioning

confidence: 99%

“…Thus, assuming that the medium was static, we used the following expression for pressure on solids [20], (Eq. 5):…”

Section: Pressure On Solidsmentioning

confidence: 99%

See 2 more Smart Citations

Study on the stability of a shear-thinning suspension used in oil well drilling

Fagundes

Santos

Damasceno

et al. 2018

Oil & Gas Science and Technology - Rev. IFP Energies nouvel

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“…A técnica utilizada (TARG) é uma técnica atualmente presente em poucos laboratórios no Brasil, sendo um deles o Laboratório de Radioisótopos da Faculdade de Engenharia Química da Universidade Federal de Uberlândia. Tal técnica mostrou-se eficaz no monitoramento das distribuições de concentrações volumétricas de partículas em outros trabalhos já publicados (Damasceno (1992), Arouca (2003), Arouca (2007), Moreira (2014, dentre outros)) e foi utilizada pela primeira vez no monitoramento do fluido Br-Mul. A partir dos resultados obtidos por meio dos experimentos foram determinadas a velocidade de sedimentação das partículas do fluido, a permeabilidade do meio poroso e uma equação constitutiva para pressão nos sólidos.…”

Section: Capítulo 1 Introduçãounclassified

Estudo da estabilidade da suspensão constituinte do fluido Br- Mul/Petrobras

Fagundes¹

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Agradeço primeiramente à Deus pela dádiva da vida.Ao meu pai Edgar, que mesmo não estando fisicamente presente em minha vida, cuida de mim, e à minha querida mãe Maria Abadia pela constante prontidão, paciência e orações diárias.Aos meus irmãos Marden e Marlipe por serem pessoas que eu admiro e me espelho.Ao meu namorado Rafael por ser um companheiro que acredita nos meus estudos e me apoia em cada decisão tomada.À toda minha família que reage com alegria a cada conquista minha e faz a minha vida mais completa.Aos meus amigos da pós-graduação, Neiton, Isabele, Bruno, Fernando e Deivid pelos conhecimentos divididos e aos agradáveis momentos de convivência. Aos alunos de iniciação científica, Felipe, Victoria, Homero e Andressa que em diversos momentos me auxiliaram na realização da parte experimental deste trabalho. Aos funcionários Maria Cecília, Silvino e Neuender, pela disposição em sempre ajudar. A todos os professores e colegas do PPGEQ/UFU pelo convívio e aprendizado. Ao CNPQ, à PETROBRAS, à FAPEMIG e à CAPES pelo auxílio financeiro que tornou possível a realização deste trabalho. Aos professores, Sérgio Mauro da Silva Neiro, Ubirajara Coutinho Filho e Bruno Arantes Moreira pela valiosa correção e ajuda para o término deste trabalho. Um agradecimento especial aos meus orientadores Prof. Fábio Arouca e Prof. Damasceno que me auxiliaram na realizaram deste trabalho.

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The Use of High Energies Radiations to Characterise Solid-Liquid Systems

Cited by 2 publications

References 0 publications

Study on the stability of a shear-thinning suspension used in oil well drilling

Study on the stability of a shear-thinning suspension used in oil well drilling

Estudo da estabilidade da suspensão constituinte do fluido Br- Mul/Petrobras

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