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Mainguy Marc - One of the best experts on this subject based on the ideXlab platform.

  • Evolution of seismic velocities in heavy oil sand reservoirs during thermal recovery process
    'EDP Sciences', 2013
    Co-Authors: Nauroy Jean-françois, Doan, Dinh Hong, Guy N., Baroni Axelle, Delage Pierre, Mainguy Marc
    Abstract:

    In thermally enhanced recovery processes like cyclic Steam stimulation (CSS) or Steam assisted gravity drainage (SAGD), Continuous Steam Injection entails changes in pore fluid, pore pressure and temperature in the rock reservoir, that are most often unconsolidated or weakly consolidated sandstones. This in turn increases or decreases the effective stresses and changes the elastic properties of the rocks. Thermally enhanced recovery processes give rise to complex couplings. Numerical simulations have been carried out on a case study so as to provide an estimation of the evolution of pressure, temperature, pore fluid saturation, stress and strain in any zone located around the injector and producer wells. The approach of Ciz and Shapiro (2007) - an extension of the poroelastic theory of Biot-Gassmann applied to rock filled elastic material - has been used to model the velocity dispersion in the oil sand mass under different conditions of temperature and stress. A good agreement has been found between these predictions and some laboratory velocity measurements carried out on samples of Canadian oil sand. Results appear to be useful to better interpret 4D seismic data in order to locate the Steam chamber

  • Evolution of seismic velocities in heavy oil sand reservoirs during thermal recovery process
    'EDP Sciences', 2012
    Co-Authors: Nauroy Jean-françois, Doan, Dinh Hong, Guy N., Baroni Axelle, Delage Pierre, Mainguy Marc
    Abstract:

    International audienceIn thermally enhanced recovery processes like cyclic Steam stimulation (CSS) or Steam assisted gravity drainage (SAGD), Continuous Steam Injection entails changes in pore fluid, pore pressure and temperature in the rock reservoir, that are most often unconsolidated or weakly consolidated sandstones. This in turn increases or decreases the effective stresses and changes the elastic properties of the rocks. Thermally enhanced recovery processes give rise to complex couplings. Numerical simulations have been carried out on a case study so as to provide an estimation of the evolution of pressure, temperature, pore fluid saturation, stress and strain in any zone located around the injector and producer wells. The approach of Ciz and Shapiro (2007) - an extension of the poroelastic theory of Biot-Gassmann applied to rock filled elastic material - has been used to model the velocity dispersion in the oil sand mass under different conditions of temperature and stress. A good agreement has been found between these predictions and some laboratory velocity measurements carried out on samples of Canadian oil sand. Results appear to be useful to better interpret 4D seismic data in order to locate the Steam chamber

Guy N. - One of the best experts on this subject based on the ideXlab platform.

  • Evolution of Seismic Velocities in Heavy Oil Sand Reservoirs during Thermal Recovery Process Évolution des vitesses sismiques dans les réservoirs de sables bitumineux au cours des procédés de récupération thermique
    EDP Sciences, 2013
    Co-Authors: Nauroy J.-f., Guy N., Doan D.h., Baroni A., Delage P., Mainguy M.
    Abstract:

    In thermally enhanced recovery processes like Cyclic Steam Stimulation (CSS) or Steam Assisted Gravity Drainage (SAGD), Continuous Steam Injection entails changes in pore fluid, pore pressure and temperature in the rock reservoir, that are most often unconsolidated or weakly consolidated sandstones. This in turn increases or decreases the effective stresses and changes the elastic properties of the rocks. Thermally enhanced recovery processes give rise to complex couplings. 4D seismic surveys are currently conducted to delineate the Steam-affected areas but the interpretation is difficult. However, it is essential for optimization of reservoir development. Numerical simulations have been carried out on a case study so as to provide an estimation of the evolution of pressure, temperature, pore fluid saturation, stress and strain in any zone located around the injector and producer wells. The approach of Ciz and Shapiro (2007) (Geophysics 72, A75-A79) has been used to model the velocity dispersion in the oil sand mass under different conditions of temperature and stress. A good agreement has been found between these predictions and some laboratory velocity measurements carried out on samples of Canadian oil sand. Results appear to be useful to better interpret 4D seismic data in order to locate the Steam chamber. Dans les procédés de récupération des huiles lourdes par méthodes thermiques, comme ia stimulation cyclique par vapeur (CSS) ou le drainage par gravité assisté par vapeur (SAGD), l’Injection de vapeur en continu entraîne des changements de liquide de pores, de pression interstitielle et de température dans la roche réservoir, qui est constituée le plus souvent de sable non consolidés ou faiblement consolidés- Ces changements à leur tour augmentent ou diminuent les contraintes effectives et modifient les propriétés élastiques des roches. Les procédés de récupération par méthodes thermiques mettent en oeuvre des couplages complexes. Des campagnes de sismique 4D sont couramment effectuées pour suivre les zones affectées par la vapeur, mais leur interprétation est difficile, Elle est pourtant essentielle pour optimiser le développement du réservoir. Des simulations numériques ont été réalisées sur un cas d’étude afin de fournir une estimation de l’évolution des pressions, températures, saturation des fluides interstitiels, contraintes et déformations dans toute zone située autour des puits injecteur et producteur. L’approche de Ciz et Shapiro (2007) (Geophysics 72, A75-A79) a été utilisée pour modéliser la dispersion de vitesse dans les sables bitumineux sous différentes conditions de température et de contrainte. Un bon accord a été trouvé entre les prédictions du modèle et certaines mesures de vitesse effectuées en laboratoire sur des échantillons de sables bitumineux Canadiens. Les résultats sont utiles pour mieux interpréter les données sismiques 4D afin de localiser la chambre à vapeur

  • Evolution of seismic velocities in heavy oil sand reservoirs during thermal recovery process
    'EDP Sciences', 2013
    Co-Authors: Nauroy Jean-françois, Doan, Dinh Hong, Guy N., Baroni Axelle, Delage Pierre, Mainguy Marc
    Abstract:

    In thermally enhanced recovery processes like cyclic Steam stimulation (CSS) or Steam assisted gravity drainage (SAGD), Continuous Steam Injection entails changes in pore fluid, pore pressure and temperature in the rock reservoir, that are most often unconsolidated or weakly consolidated sandstones. This in turn increases or decreases the effective stresses and changes the elastic properties of the rocks. Thermally enhanced recovery processes give rise to complex couplings. Numerical simulations have been carried out on a case study so as to provide an estimation of the evolution of pressure, temperature, pore fluid saturation, stress and strain in any zone located around the injector and producer wells. The approach of Ciz and Shapiro (2007) - an extension of the poroelastic theory of Biot-Gassmann applied to rock filled elastic material - has been used to model the velocity dispersion in the oil sand mass under different conditions of temperature and stress. A good agreement has been found between these predictions and some laboratory velocity measurements carried out on samples of Canadian oil sand. Results appear to be useful to better interpret 4D seismic data in order to locate the Steam chamber

  • Evolution of seismic velocities in heavy oil sand reservoirs during thermal recovery process
    'EDP Sciences', 2012
    Co-Authors: Nauroy Jean-françois, Doan, Dinh Hong, Guy N., Baroni Axelle, Delage Pierre, Mainguy Marc
    Abstract:

    International audienceIn thermally enhanced recovery processes like cyclic Steam stimulation (CSS) or Steam assisted gravity drainage (SAGD), Continuous Steam Injection entails changes in pore fluid, pore pressure and temperature in the rock reservoir, that are most often unconsolidated or weakly consolidated sandstones. This in turn increases or decreases the effective stresses and changes the elastic properties of the rocks. Thermally enhanced recovery processes give rise to complex couplings. Numerical simulations have been carried out on a case study so as to provide an estimation of the evolution of pressure, temperature, pore fluid saturation, stress and strain in any zone located around the injector and producer wells. The approach of Ciz and Shapiro (2007) - an extension of the poroelastic theory of Biot-Gassmann applied to rock filled elastic material - has been used to model the velocity dispersion in the oil sand mass under different conditions of temperature and stress. A good agreement has been found between these predictions and some laboratory velocity measurements carried out on samples of Canadian oil sand. Results appear to be useful to better interpret 4D seismic data in order to locate the Steam chamber

Cavalcante, Liara Tavares - One of the best experts on this subject based on the ideXlab platform.

  • Estudo de modelos composicionais de óleo na injeção contínua de vapor
    Universidade Federal do Rio Grande do Norte, 2011
    Co-Authors: Cavalcante, Liara Tavares
    Abstract:

    O objetivo da recuperação térmica é aquecer o reservatório e o óleo nele existente para aumentar a sua recuperação. Na Bacia Potiguar existem vários reservatórios de óleos pesados cuja energia de recuperação primária nos fornece uma vazão de óleo pequena, o que torna tais reservatórios ótimos candidatos para aplicação de um método de recuperação avançada de petróleo, especialmente o térmico. A injeção de vapor pode ocorrer de forma cíclica ou contínua. A injeção de vapor contínua ocorre através de poços injetores, próximos aos quais se forma uma zona de vapor que se expande, tendo como conseqüência o deslocamento do óleo com viscosidade e mobilidade melhoradas na direção dos poços produtores. Outro mecanismo possível de deslocamento do óleo em reservatórios submetidos à injeção contínua de vapor é a destilação do óleo por vapor, o qual quando alcançam altas temperaturas, suas frações mais leves podem ser vaporizadas alterando a composição do óleo produzido, do óleo residual ou impactar na quantidade de óleo produzida. Nesse contexto, este trabalho objetiva estudar a influência de modelos composicionais na injeção contínua de vapor através de uma análise de parâmetros como vazão de injeção de vapor e temperatura de injeção. Foram realizadas diversas análises comparativas levando os diversos modelos de fluidos, variando de um bem elementar, com 03 pseudocomponentes até modelagens de fluidos com números crescentes de pseudocomponentes. Foi utilizado um simulador numérico comercial para o estudo a partir de um modelo de reservatório homogêneo com características similares às encontradas no Nordeste brasileiro. Algumas conclusões como o aumento do tempo de simulação com o aumento do número de pseudocomponentes, a influência significativa da vazão de injeção na produção acumulada de óleo e a pouca influência do número de pseudocomponentes nas vazões e produção acumulada de óleo foram constatadasThe objective of the thermal recovery is to heat the resevoir and the oil in it to increase its recovery. In the Potiguar river basin there are located several heavy oil reservoirs whose primary recovery energy provides us with a little oil flow, which makes these reservoirs great candidates for application of a method of recovery advanced of the oil, especially the thermal. The Steam Injection can occur on a cyclical or Continuous manner. The Continuous Steam Injection occurs through Injection wells, which in its vicinity form a zone of Steam that expands itself, having as a consequence the displace of the oil with viscosity and mobility improved towards the producing wells. Another possible mechanism of displacement of oil in reservoirs subjected to Continuous Injection of Steam is the distillation of oil by Steam, which at high temperatures; their lighter fractions can be vaporized by changing the composition of the oil produced, of the oil residual or to shatter in the amount of oil produced. In this context, this paper aims to study the influence of compositional models in the Continuous Injection of Steam through in the analysis of some parameters such as flow Injection Steam and temperature of Injection. Were made various leading comparative analysis taking the various models of fluid, varying from a good elementary, with 03 pseudocomponents to a modeling of fluids with increasing numbers of pseudocomponents. A commercial numerical simulator was used for the study from a homogeneous reservoir model with similar features to those found in northeastern Brazil. Some conclusions as the increasing of the simulation time with increasing number of pseudocomponents, the significant influence of flow Injection on cumulative production of oil and little influence of the number of pseudocomponents in the flows and cumulative production of oil were foun

Rodrigues, Marcos Allyson Felipe - One of the best experts on this subject based on the ideXlab platform.

  • Estudo paramétrico da segregação gravitacional na injeção contínua de vapor
    Pesquisa e Desenvolvimento em Ciência e Engenharia de Petróleo, 2008
    Co-Authors: Rodrigues, Marcos Allyson Felipe
    Abstract:

    Steam Injection is the most used method of additional recovery for the extraction of heavy oil. In this type procedure is common to happen gravitational segregation and this phenomenon can affect the production of oil and therefore, it shoulds be considered in the projects of Continuous Steam Injection. For many years, the gravitational segregation was not adequately considered in the calculation procedures in Reservoir Engineering. The effect of the gravity causes the segregation of fluids inside the porous media according to their densities. The results of simulation arising from reservoirs could provide the ability to deal with the gravity, and it became apparent that the effects of the gravity could significantly affect the performance of the reservoir. It know that the gravitational segregation can happen in almost every case where there is Injection of light fluid, specially the Steam, and occurs with greater intensity for viscous oil reservoirs. This work discusses the influence of some parameters of the rock-reservoir in segregation as viscosity, permeability, thickness, cover gas, porosity. From a model that shows the phenomenon with greater intensity, optimized some operational parameters as the rate flow rate Steam, distance between the wells injector-producer, and interval of completion which contributed to the reduction in gravity override, thus increasing the oil recovery. It was shown a greater technical-economic viability for the model of distance between the wells 100 m. The analysis was performed using the simulator of CMG (Computer Modeling Group-Stars 2007.11, in which was observed by iterating between studied variables in heavy oil reservoirs with similar characteristics to Brazilian NortheastA injeção de vapor é o método de recuperação suplementar mais utilizado para a recuperação de óleos pesados. Neste tipo de processo é comum acontecer a segregação gravitacional e este fenômeno pode afetar a produção de óleo e, por isso, deve ser considerado nos projetos de injeção contínua de vapor. Por muitos anos, a segregação gravitacional não era adequadamente considerada em procedimentos de cálculo em Engenharia de Reservatórios. O efeito da gravidade faz com que ocorra a segregação de fluidos, isto é, os fluidos tendem a se arranjar dentro do meio poroso de acordo com as suas densidades. Os resultados advindos de simulação de reservatórios forneceram a capacidade para lidar com a gravidade, e tornou-se aparente que os efeitos da gravidade poderiam afetar significativamente o desempenho do reservatório. Sabe-se que a segregação gravitacional pode ocorrer em quase todos os casos onde há injeção de fluidos leves, especialmente o vapor, e ocorre com maior intensidade para reservatórios de óleos viscosos. Neste trabalho é abordada a influência de alguns parâmetros da rocha-reservatório na segregação como viscosidade, permeabilidade, espessura, capa de gás e porosidade. A partir de um modelo que apresenta o fenômeno com maior intensidade, otimizaram-se alguns parâmetros operacionais como vazão de injeção de vapor, distância entre os poços injetor-produtor e intervalo de completação que contribuíram para a redução do efeito, aumento assim o fator de recuperação. Foi mostrada uma maior viabilidade técnica-econômica para o modelo de distância entre os poços de 100 m. A análise foi realizada utilizando o simulador comercial da CMG (Computer Modelling Group) - Stars 2007.11, onde foi observada a interação entre as variáveis estudadas em reservatórios com características semelhantes aos encontrados no Nordeste brasileir

Nauroy Jean-françois - One of the best experts on this subject based on the ideXlab platform.

  • Evolution of seismic velocities in heavy oil sand reservoirs during thermal recovery process
    'EDP Sciences', 2013
    Co-Authors: Nauroy Jean-françois, Doan, Dinh Hong, Guy N., Baroni Axelle, Delage Pierre, Mainguy Marc
    Abstract:

    In thermally enhanced recovery processes like cyclic Steam stimulation (CSS) or Steam assisted gravity drainage (SAGD), Continuous Steam Injection entails changes in pore fluid, pore pressure and temperature in the rock reservoir, that are most often unconsolidated or weakly consolidated sandstones. This in turn increases or decreases the effective stresses and changes the elastic properties of the rocks. Thermally enhanced recovery processes give rise to complex couplings. Numerical simulations have been carried out on a case study so as to provide an estimation of the evolution of pressure, temperature, pore fluid saturation, stress and strain in any zone located around the injector and producer wells. The approach of Ciz and Shapiro (2007) - an extension of the poroelastic theory of Biot-Gassmann applied to rock filled elastic material - has been used to model the velocity dispersion in the oil sand mass under different conditions of temperature and stress. A good agreement has been found between these predictions and some laboratory velocity measurements carried out on samples of Canadian oil sand. Results appear to be useful to better interpret 4D seismic data in order to locate the Steam chamber

  • Evolution of seismic velocities in heavy oil sand reservoirs during thermal recovery process
    'EDP Sciences', 2012
    Co-Authors: Nauroy Jean-françois, Doan, Dinh Hong, Guy N., Baroni Axelle, Delage Pierre, Mainguy Marc
    Abstract:

    International audienceIn thermally enhanced recovery processes like cyclic Steam stimulation (CSS) or Steam assisted gravity drainage (SAGD), Continuous Steam Injection entails changes in pore fluid, pore pressure and temperature in the rock reservoir, that are most often unconsolidated or weakly consolidated sandstones. This in turn increases or decreases the effective stresses and changes the elastic properties of the rocks. Thermally enhanced recovery processes give rise to complex couplings. Numerical simulations have been carried out on a case study so as to provide an estimation of the evolution of pressure, temperature, pore fluid saturation, stress and strain in any zone located around the injector and producer wells. The approach of Ciz and Shapiro (2007) - an extension of the poroelastic theory of Biot-Gassmann applied to rock filled elastic material - has been used to model the velocity dispersion in the oil sand mass under different conditions of temperature and stress. A good agreement has been found between these predictions and some laboratory velocity measurements carried out on samples of Canadian oil sand. Results appear to be useful to better interpret 4D seismic data in order to locate the Steam chamber