Hydraulic Fracturing
Mostrando 13-20 de 20 artigos, teses e dissertações.
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13. PROPPANT FLOWBACK IN OIL WELLS STIMULATED BY HYDRAULIC FRACTURING / FLUXO DE PARTÍCULAS DE SUSTENTAÇÃO EM POÇOS DE PETRÓLEO ESTIMULADOS POR FRATURAMENTO HIDRÁULICO
Um dos principais objetivos da engenharia de petróleo é desenvolver e aplicar técnicas capazes de aumentar a produtividade de poços de petróleo, incluindo a estimulação da formação através de operações que aumentem a permeabilidade da rocha-reservatório e facilitem o escoamento do fluido. Dentre as técnicas de estimulação, a mais utilizada é
Publicado em: 2004
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14. Ensaios não convencionais para determinação da tenacidade à fratura em rochas: análise e comparação / Non-conventional tests for determining the fracture toughness in rocks: analysis and comparison
Since early 1970 s new fracture mechanics concepts have been developed to explain rock fracture behavior. Fracture toughness has been measured and considered as an important intrinsic property of rock indicating the magnitude of fracture strength or its ability to resist crack propagation. Rock fracture mechanics has been widely applied to tectonics, energy
Publicado em: 2004
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15. Modelagem semi-analitica pseudo tridimensional de propagação e fechamento de fraturas induzidas em rochas
This investigation describes a semi-analytical model which simulates fracture propagation in petroleum reservoir rocks. The model permits evaluating the three fracture dimensions parameters (width, height and length) during propagation. Like other pseudo 3D models, some assumptions are used to solve the fracture three-dimensional propagation problem, such as
Publicado em: 1998
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16. Controle estrutural da mineralização aurifera na mina de Cuiaba, setor noroeste do Greenstone Belt, Rio das Velhas, Quadrilatero Ferrifero, MG / Structural control of the gold mineralization at the Cuiaba mine, northwestern sector of the Rio das Velhas Greenstone Belt, Quadrilatero Ferrifero, MG
The Cuiabá Mine is located in the northem portion ofthe Quadrilátero Ferrífero, within a sequence of Archean rocks forrning the base of the Rio das Velhas greenstone belt. This research focused on geological mapping at a scale of l:100 and detailed studies of the tectonic structures observed in the Cuiabá Mine. Its main objective is to present the result
Publicado em: 1997
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17. Um modelo quase-analitico para simulação tridimensional de propagação de fratura hidraulica
Several models for the development of a fully three-dimensional hydraulic fracturing simulator have been described in the literature. However, most of them result in systems that require computational efforts not compatible with the direct application in the field. In order to attenuate this problem, simplified assumptions are introduced, resulting in pseudo
Publicado em: 1996
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18. Solução de problemas poroelasticos atraves do metodo dos elementos de contorno
The Biot s theory af poroelasticity is revisited making it more easily applicable to practical problems. The parameters used by Biot are redefined as functions of other ones with an easier and simpler physical interpretation. This helps their determination and the understanding of poroelastic phenomena. The equations that govern the theory of quasi-static li
Publicado em: 1995
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19. Analise das operações de fraturamento hidraulico atraves do comportamento da pressão durante o bombeio
Hydraulic fracturing is a common stimulation technique used in petroleum industry. It needs to be very well planned because of the costs of the treatment that, depending on the well, may be very substancial. The design of a hydraulic fracture is based upon classical fracture models with very known geometry equations and pressure behavior. The fracture model
Publicado em: 1991
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20. Escoamento laminar e turbulento de soluções polimericas de hidroxipropilguar em tubos
In hydraulic fraçturing treatments, pressure loss due to friction in the string has been a limiting factor meanly because high fiow rates are desirable for improvement of the operation effectiveness. Fracturing fiuids based on Hidroxipropilguar in water solutions has made the use of high fiow rates possible because these solutions exibit drag reduction prop
Publicado em: 1991