Drilling Effects
Mostrando 1-12 de 29 artigos, teses e dissertações.
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1. Impacto nas Propriedades Mecânicas e Tensões Residuais do Material ASTM A572 Grau 50 Soldado por Arco Submerso com Alívio de Tensões Térmico
Resumo O aço ASTM A572 Grau 50 é utilizado na fabricação de conjuntos soldados para aerogeradores, por este motivo, a realização de alívio de tensões é de grande importância para correção dos impactos causados pelos processos de soldagem, bem como, o conhecimento das propriedades finais obtidas com a realização deste processo. O objetivo desse
Soldag. insp.. Publicado em: 02/12/2019
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2. Study of Continuous Rheological Measurements in Drilling Fluids
Abstract Drilling an oil well involves using drilling fluids that perform cleaning and cooling functions, but that most importantly maintain the fluids of the geological formation contained by hydraulic pressure. A fundamental role in predicting the hydraulic pressure of the well consists of monitoring the fluid’s rheological behavior. This paper summarize
Braz. J. Chem. Eng.. Publicado em: 2017-07
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3. Investigation on the Effects of Process Parameters on Laser Percussion Drilling Using Finite Element Methodology; Statistical Modelling and Optimization
Abstract In the present research, the simulation of the Nickel-base superalloy Inconel 718 fiber-laser drilling process with the thickness of 1mm is investigated through the Finite Element Method. In order to specify the appropriate Gaussian distribution of laser beam, the results of an experimental research on glass laser drilling were simulated using three
Lat. Am. j. solids struct.. Publicado em: 2017-03
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4. Development and Test of an Equipment to Measure Residual Strain Inside Pipes Using the Hole-Drilling Method
Abstract Residual stresses are present in materials or structural component in the absence of external loads or changes in temperatures. The most common causes of residual stresses being present are the manufacturing or assembling processes. All manufacturing processes, such as casting, welding, machining, moulding, heat treatment, etc, introduces residual s
Lat. Am. j. solids struct.. Publicado em: 2016-12
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5. Influence of a diagonal pre-drilled hole on hole quality during the reaming process using multiblade tools
The requirements of production engineering for a precision hole are to ensure the required quality as well as minimal production costs. The interactions between machine, tool and the pre-drilled hole result in uncertainties during the final reaming process. For this purpose the reaming process itself and the appearance of process faults were focused in a lar
J. Braz. Soc. Mech. Sci. & Eng.. Publicado em: 2012
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6. Empirical study regarding the effects of minimum quantity lubricant utilization on performance characteristics in the drilling of Al 7075
Cutting fluids are difficult and expensive to recycle. These drawbacks mentioned can be reduced or eliminated by performing the cutting operations with minimum quantity lubrication or without using any cutting fluid. In this study, the effects of different cutting parameters on performance characteristics are studied empirically during the drilling of Al7075
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2011-03
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7. Effect of high energy milling on the microstruture and properties of wc-ni composite
Hard metal is a composite material used in several areas of machining, mining and construction. It can be applied directly on oil and gas drilling equipment components. The main objective of this work was to apply a high energy milling technique to produce the WC-Ni composite and study the effects of milling time in the material properties. The milling of ha
Materials Research. Publicado em: 2010-09
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8. LIQUID-LIQUID DISPLACEMENT FLOWS IN A HELE-SHAW CELL INCLUDING NON-NEWTONIAN EFFECTS / DESLOCAMENTO DE LÍQUIDOS EM CÉLULA DE HELE-SHAW CONSIDERANDO EFEITOS NÃO NEWTONIANOS
This work studied the displacement of fluids in porous media using a Hele-Shaw cell. Specifically, was investigated experimentally the displacement of a non-Newtonian fluid by a Newtonian in a rectangular Hele-Shaw cell. The Saffman-Taylor or viscous fingering instability occurs when one fluid pushes a more viscous one, and a Hele-Shaw is a convenient tool t
Publicado em: 2010
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9. Efeito do dano físico sobre o metabolismo de folhas de taioba, Xanthosoma sagittifolium (L.) Schott / Effects of wounding on the metabolism of tannia leaves, Xanthosoma sagittifolium (L.) Schott
Vegetables like leaves of tannia are subject to various factors which cause deterioration. Among these factors, mechanical damage triggers a series of physiological responses that occur at the site of the injury and surrounding tissues. The objective of this study was to evaluate the physiological responses of tannia leaves mechanical damaging, and whether t
Publicado em: 2009
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10. Immiscible liquid-liquid displacement in capillary tubes: viscoelastic effects
The displacement of a fluid by liquid injection occurs in some practical applications like oil recovery in porous media and cementation of drilling wells. The dimensionless numbers that govern this problem are the capillary number, Reynolds number and viscosity ratio. An overview of selected oil recovery processes shows that hydrolyzed polyacrilamide and bio
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2008-06
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11. Well control modeling : a finite difference approach / Modelagem do controle de poços por diferenças finitas
The oil field industry has been drilling in different scenarios, subjected to high pressures and high temperatures in deep wells located in deep and ultradeep waters. The well control study in these scenarios demands a kick simulator capable to do precise predictions of the pressure behavior inside the wellbore during a kick situation. Regarding this scenari
Publicado em: 2008
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12. Modelo para anÃlise de tensÃes gravitacionais a partir de caracterÃsticas geomecÃnicas dos maciÃos rochosos
Stresses acting on rock mass can be either of natural origin or induced. The natural origin stresses, or in situ stresses, are divided into: gravitational, tectonics, waste and land. The induced stresses are caused by the action of engineering works such as excavation or construction. These works alter the balance of the state of pre-existing stresses in the
Publicado em: 2008