Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/346664
Type: DISSERTAÇÃO DIGITAL
Degree Level: Mestrado
Title: Proposição de modelo de fluxo de deslizamento para escoamento líquido-líquido horizontal
Title Alternative: Drift-flux modelling proposal for liquid-liquid horizontal flow
Author: Ruschel, Rodrigo Henrique, 1991-
Advisor: Castro, Marcelo Souza de, 1986-
Abstract: Resumo: A necessidade de entender as características de escoamentos líquido-líquido vem ganhando atenção dentro da indústria do petróleo, devido ao aumento da produção de água nos campos maduros. Como as propriedades dos fluidos variam de um campo para o outro, o entendimento da influência da razão de viscosidade é considerado crucial para compreender o comportamento da produção do campo. O principal objetivo deste trabalho é levantar parâmetros de modelagem de fluxo de deslizamento tais como parâmetro de distribuição (Co) e velocidade de deslizamento (VD) para escoamentos água-óleo com diferentes padrões de escoamento para aplicar em modelos de escoamento. Os experimentos foram conduzidos em duas etapas. Na primeira etapa, os testes foram realizados no Laboratório de Escoamentos Multifásicos Industriais da - EESC - USP, em São Carlos. Esses testes foram conduzidos variando a viscosidade do óleo mineral LUBRAX Turbina 100: (i) 225 cP cP a 23?C; (ii) 76 cP cP a 40?C. O diâmetro interno da tubulação é 1 (uma) polegada de material borossilicato (vidro) com 12 metros de comprimento. Na segunda etapa os experimentos foram realizados no LabPetro ¿ UNICAMP considerando o óleo LUCHETTI 600 com uma razão de viscosidade de 180 cP (24?C) em uma tubulação com 3 (três) polegadas de diâmetro interno. Para a obtenção da fração volumétrica foram utilizados o sistema de sensor wiremesh na USP e válvulas de fechamento rápido na UNICAMP. Além dos dados de modelagem de fluxo de deslizamento, obtidos em função do diâmetro da tubulação e da viscosidade do óleo, foram obtidos dados experimentais de padrões de escoamentos, gradiente de pressão friccional e fração volumétrica, formando um banco de dados experimental novo na literatura. Os parâmetros de fluxo de deslizamento foram levantados dividindo os padrões de escoamento em apenas dois tipos: escoamento dominado pela água e escoamentos com óleo em contato com a parede. A divisão foi feita pela análise do gradiente de pressão friccional em relação ao da água na vazão da mistura. Os dados levantados mostram que o deslizamento entre fases é considerável e não deve ser desprezado para previsão do gradiente de pressão e fração volumétrica em escoamentos líquido-líquido. ABSTRACT The need to understand the characteristics of liquid-liquid flows has been gaining attention within the oil industry due to increased water production in mature fields. As fluid properties vary from field to field, understanding the influence of the viscosity ratio is considered crucial to understanding the behavior of field production. The main objective of this work is to raise drift flux model parameters such as distribution parameter (CO) and drift velocity (VD) for water-oil flows with different flow patterns in order to improve the modeling of these flows. The experiments were conducted in two stages. In the first stage, the tests were performed at the Industrial Multiphase Flow Laboratory (LEMI) of - EESC - USP, in São Carlos. These tests were conducted by varying the viscosity of the LUBRAX Turbine 100 mineral oil: (i) 225 cP cP at 23?C; (ii) 76 cP cP at 40 ° C. The setup was made of borosilicate (glass) tubes with internal diameter of 1" and 12-m long. In the second stage the experiments were performed in LabPetro - UNICAMP in a pipe with 3" of internal diameter and considering the oil LUCHETTI 600, with a viscosity ratio of 180 cP cP (24?C). To obtain the volumetric fraction it was used the wiremesh sensor system at USP and quick closing valves at UNICAMP. In addition to the drift flux model parameters data obtained as a function of the pipe diameter and oil viscosity, experimental data of flow patterns with high speed cameras, frictional pressure gradient and volumetric fraction were obtained, forming a new database in the literature. Drift-flux parameters data were collected by dividing the flow patterns into only two types: water-dominated flow and oil in contact with the pipe wall. The division was made by the analysis of the frictional pressure gradient in relation to that of the water in the mixture velocity. The data show that the phases¿ slip is considerable and should not be disregarded to predict the pressure gradient and holdup in liquid-liquid flows

Abstract: The need to understand the characteristics of liquid-liquid flows has been gaining attention within the oil industry due to increased water production in mature fields. As fluid properties vary from field to field, understanding the influence of the viscosity ratio is considered crucial to understanding the behavior of field production. The main objective of this work is to raise drift flux model parameters such as distribution parameter (CO) and drift velocity (VD) for water-oil flows with different flow patterns in order to improve the modeling of these flows. The experiments were conducted in two stages. In the first stage, the tests were performed at the Industrial Multiphase Flow Laboratory (LEMI) of - EESC - USP, in São Carlos. These tests were conducted by varying the viscosity of the LUBRAX Turbine 100 mineral oil: (i) 225 cP cP at 23?C; (ii) 76 cP cP at 40 ° C. The setup was made of borosilicate (glass) tubes with internal diameter of 1" and 12-m long. In the second stage the experiments were performed in LabPetro - UNICAMP in a pipe with 3" of internal diameter and considering the oil LUCHETTI 600, with a viscosity ratio of 180 cP cP (24?C). To obtain the volumetric fraction it was used the wiremesh sensor system at USP and quick closing valves at UNICAMP. In addition to the drift flux model parameters data obtained as a function of the pipe diameter and oil viscosity, experimental data of flow patterns with high speed cameras, frictional pressure gradient and volumetric fraction were obtained, forming a new database in the literature. Drift-flux parameters data were collected by dividing the flow patterns into only two types: water-dominated flow and oil in contact with the pipe wall. The division was made by the analysis of the frictional pressure gradient in relation to that of the water in the mixture velocity. The data show that the phases¿ slip is considerable and should not be disregarded to predict the pressure gradient and holdup in liquid-liquid flows
Subject: Escoamento multifásico - Petroleo
Escoamento - Matemática
Escoamento multifásico
Campos maduros de petróleo
Campos petrolíferos
Language: Português
Editor: [s.n.]
Citation: RUSCHEL, Rodrigo Henrique. Proposição de modelo de fluxo de deslizamento para escoamento líquido-líquido horizontal. 2020. 1 recurso online (105 p.) Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecânica, Campinas, SP. Disponível em: http://www.repositorio.unicamp.br/handle/REPOSIP/346664. Acesso em: 24 Aug. 2020.
Date Issue: 2020
Appears in Collections:FEM - Tese e Dissertação

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