Drilling Hydraulic
Mostrando 1-12 de 14 artigos, teses e dissertações.
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1. 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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2. Caracterização físico-hídrica e hidráulica de solos do bioma Cerrado submetidos a diferentes sistemas de preparo.
RESUMO: O plantio direto resulta em impactos positivos na conservação da água no solo. Considerando essa premissa, este trabalho teve o objetivo de avaliar as principais alterações nas propriedades físico-hídricas de solos de Cerrado, decorrentes do uso do plantio direto durante 3, 6 e 12 anos, sob condições de sequeiro e irrigado, em comparação c
Planaltina. Publicado em: 2011
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3. EXPERIMENTAL EVALUATION OF TRANSPORT PARAMETERS IN SHALES / AVALIAÇÃO EXPERIMENTAL DOS PARÂMETROS DE TRANSPORTE EM FOLHELHOS
The majority of the problems related to wellbore stability occur when argillaceous rocks, such as shales, are drilled. Such problems are believed, in general, to be caused by the physical-chemical interaction between drilling fluids and the referred rocks. This dissertation focuses on the experimental study of the behavior of shales exposed to different sali
Publicado em: 2010
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4. Simulador de meios porosos saturados elastoplasticos / Numerical simulator of saturated elastoplastic porous media
The exploration of mineral resources is growing in importance in the Brazilian economy. Since the environments in which these resources are found are becoming increasingly more complex and challenging for the production phase, currently unavailable knowledge and technologies are required to produce these reserves. In the particular well drilling and completi
Publicado em: 2009
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5. Avaliação da perda de carga e do fator de atrito no escoamento de fluidos de perfuração em geometrias circular e anulares concêntricos / Load loss and friction factor in the disposal of drilling fluids in circular geometry and concentric rings
The constant search for new technologies of drilling oil wells has reinforced the research and development of drilling fluids and the specific study of their disposal, particularly with regard to the load loss caused by the different geometries. Within this context, this study focused on the load loss and friction factor in the disposal of the drilling fluid
Publicado em: 2008
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6. Influence of the phreatic aquifer in the nutrient dynamics (nitrogen and phosphorus) in lakes of different hydrodynamic characteristics / Influência do aqüífero freático na dinâmica de nutrientes (nitrogênio e fósforo) em lagoas com diferentes características hidrodinâmicas
The discharge zone of Paranapanema river at Jurumirim reservoir is an area of decreased current velocity associated to a great number of aquatic environments with different hydrodynamic characteristics. To evaluate the influence of the superficial phreatic aquifer in the nutrient dynamics (nitrogen and phosphorus and main cations), three floodplain lakes wit
Publicado em: 2007
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7. MODELAGEM PARA O ESCOAMENTO TRANSIENTE HORIZONTAL E QUASE HORIZONTAL NA PERFURAÇÃO DE POÇOS DE PETRÓLEO / TRANSIENT MODELING OF HORIZONTAL AND NEAR HORIZONTAL FOR WELLBORE DRILLING
Dentre os custos considerados na explotação de um campo de petróleo, os de perfuração constituem uma parcela significativa do total. Dentro deste cenário, devemos estar atentos à remoção dos cascalhos gerados pela perfuração, também referido como limpeza de poços. Esta operação é, ainda hoje, um tema crítico na perfuração de poços de alta
Publicado em: 2006
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8. STUDY OF THE HYDRAULIC CONDUCTIVITY OF SOILS FOR DISPOSAL OF SOLID WASTE IN THE REGION OF SANTA MARIA / ESTUDO DA CONDUTIVIDADE HIDRÁULICA DE SOLOS PARA A DISPOSIÇÃO DE RESÍDUOS SÓLIDOS NA REGIÃO DE SANTA MARIA
The study of hydraulic conductivity of soil is an important stage in the geotecnical investigations, aiming at the use of compacted soils as impermeabilizing mineral layers, for the base and cover of sanitary land-fill sites. This paper presents the study of hydraulic conductivity (k) of natural and compacted soils of the Santa Maria region, in the area call
Publicado em: 2005
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9. INTERAÇÃO FLUIDOS SINTÉTICOS BASE-ÓLEO E BASE-ÁGUA E FOLHELHOS / SHALE-SYNTHETICS OIL AND WATER FLUIDS INTERACTION
A methodology was developed to experimentally obtain the capillary pressure of different fluids in contact with shales and compare these values with analytical results from individual characterization of fluids and shales. Tests were carried out in a diffusion cell, which allows the simulation of in-situ pressure conditions, the evaluation of physical-chemic
Publicado em: 2005
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10. PRESSURE DROP IN AXIAL FLOW THROUGH ANNULAR REGION WITH INNER CYLINDER ROTATION / QUEDA DE PRESSÃO EM ESCOAMENTO AXIAL ATRAVÉS DE REGIÃO ANULAR COM ROTAÇÃO DO CILINDRO INTERNO
The present work investigated the pressure drop generated by the flow through an annular configuration with rotation of the inner cylinder. The motivation for the work comes from the several industrial application of the configuration, such as chemical reactors, filters and in drilling operations for oil and gas wells. The experimental study was conducted in
Publicado em: 2005
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11. Influence of high sintering pressure on the microhardness and wear resistance of diamond powder and silicon carbide-based composites
The work reported on here involved the development of several samples of "diamond-SiC" composite produced under sintering pressures of up to 9.0 GPa at temperatures of up to 1973 7K. The average size of the diamond micropowder crystals used was 40/28 µm. The sintering process was carried out in a 2500-ton hydraulic press equipped with an anvil-type high-pre
Materials Research. Publicado em: 2004-06
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12. Modelagem acoplada hidro-mecÃnica da perfuraÃÃo de poÃos em rochas frÃgeis
The thesis presents the first results of a research theme that is now going on the Civil Engineering Department of the Federal University of Pernambuco, which deals with wellbore stability in brittle rocks. The aim is to implement in a finite element code which solves simultaneously the stress equilibrium and the mass balance equation of pore fluid more real
Publicado em: 2004