Fluid Mud
Mostrando 1-11 de 11 artigos, teses e dissertações.
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1. Evaluación reológica de fluidos de perforación base agua con nanosílice
ABSTRACT Generally, drilling fluids may be defined as fluids with a composition that can assist the generation and removal of cuttings from the borehole to the surface. They are classified according to their base as water based mud (WBM), oil based mud (OBM) or gas. Polymers, densifiers, brines, surfactants, among others are the primary components of drillin
Matéria (Rio J.). Publicado em: 19/07/2018
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2. Observação do transporte de sedimentos em suspensão ao longo do Canal Norte do rio Amazonas durante condições de baixa descarga (outubro 2008) / Observation of suspended sediment transport along North Channel of Amazon river during low discharge (October 2008)
The Amazon river, located in northernBrazil, discharges between 80,000 and 250,000 m3s-1 of water onto the adjacent shelf, creating a plume of brackish water that extends hundreds of kilometers away from the river mouth. This river also carries a large amount of fine sediments to the ocean where fluid mud has been found in the topset and upper foreset layers
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 21/10/2011
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3. Efeitos de um evento de deposição de lama fluída sobre a macrofauna vagante da zona de arrebentação de uma praia arenosa no sul do Brasil / Effects of a fluid mud deposition event on the wandering macrofauna of the surf zone of a sandy beach in southern Brazil
Conforme exigências do Programa de Pós-Graduação em Oceanografia Biológica da FURG, esta dissertação é composta de uma parte em português, constituída de uma introdução geral, objetivos, materiais e métodos, resultados, considerações gerais e bibliografia; tendo como apêndice o trabalho escrito na língua inglesa intitulado Effects of a fluid
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/05/2011
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4. Rheological analysis of water clay compositions in order to investigate mudflows developing in canals
This paper describes the physical and rheological property mixtures of water and kaolinitic clay that form the interstitial fluid found in muds from inundations or torrential lava. Several compositions with varying volume concentrations (Cv) were tested in a high-precision R/S rheometer (shear rate x shear stress). The rheometric parameters such as critical
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2009-03
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5. Avaliação e critérios de eficiência nos processos de tratamento de fluido de corte por eletroflotação / Evaluation criteri and efficiency in the procedures for treatment of fluid cutting by eletroflotation
In the machining process cutting fluids are used to facilitate the manufacture of metal parts, which has resulted in problems of various orders, ranging from the generation of harmful effects on the desktop to the aggression of the environment with their improper disposal. The cutting fluids are composed of oils and minerals, synthetic solutions and water, c
Publicado em: 2008
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6. Escolamento laminar de líquidos não-newtonianos em seções anulares: estudos de CFD e abordagem experimental
The annular flow has great importance in the oil industry, in drilling operations with cuttings removal by drilling mud and also in petroleum artificial lifting, with progressive cavity pumping systems. The constant concern about operation costs and the more frequent necessity of raising the production capacity implies in larger flow through oil wells. In th
Publicado em: 2006
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7. DISPLACEMENT OF NON-NEWTONIAN LIQUIDS IN ECCENTRIC ANNULI / DESLOCAMENTO DE LÍQUIDOS NÃO NEWTONIANOS EM TUBOS ANULARES EXCÊNTRICOS
In cementing processes of oil wells, the mud formerly used to drag the gravel, to lubricate and to cool the drill is removed and substituted by a cement mixture. This substitution is obtained by the displacement of a fluid by another in the annulus between the rock formation and the casing. For best results of cementing process, intermediate fluids, also cal
Publicado em: 2005
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8. ESCOAMENTO DE UM LÍQUIDO PSEUDOPLÁSTICO EM ESPAÇO ANULAR COM EXCENTRICIDADE VARIÁVEL / FLOW OF PSEUDOPLASTIC FLUID IN ANNULAR WITH VARIABLE ECCENTRICITY
O estudo de escoamentos em espaço anular é de fundamental importância para o entendimento e otimização do processo de perfuração de poços. A lama de perfuração deve possuir propriedades reológicas e termofísicas tais que garantam um bom desempenho no carreamento de cascalho, na lubrificação e refrigeração das brocas, na limpeza do poço, manu
Publicado em: 2005
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9. Determinação das flutuações na vazão de retorno provocadas pelo movimento de heave em unidades flutuantes de perfuração
Early detection of fluid influx from the formation, generally known as a "kick", is a major concern for the safety of the crew and rig equipament, and for the well itself. Many kicks have been detected at its very beginning by the delta flow parameter, which is simply the return mud flow rate minus the circulating rate. Accurate flow measurements in this cas
Publicado em: 1996
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10. Monosporium apiospermum meningoencephalitis: a clinico-pathological case.
Twenty nine cases of central nervous system infection due to Monosporium apiospermum have been reported. Six of them occurred after an aspiration pneumonia following a near drowning. The case of a 53 year old man is reported: M apiospermum was isolated from cerebrospinal fluid, sputum, urine and from the mud of the ditch where the patient had fallen. Though
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11. Mesophilic Cellulolytic Clostridia from Freshwater Environments
Eight strains of obligately anaerobic, mesophilic, cellulolytic bacteria were isolated from mud of freshwater environments. The isolates (C strains) were rod-shaped, gram negative, and formed terminal spherical to oval spores that swelled the sporangium. The guanine plus cytosine content of the DNA of the C strains ranged from 30.7 to 33.2 mol% (midpoint of