Well Casing
Mostrando 1-12 de 13 artigos, teses e dissertações.
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1. Qualidade e vida de prateleira de patê elaborado com subprodutos comestíveis do abate de ovinos. / Quality and shelf life of pâté made with edible by-products from slaughtered lamb.
Many edible meat by-products, produced from the lamb slaughter, are often wasted, although they represent excellent sources of many nutrients. The preparation of pâté may be an alternative to the use of this raw material, and contribute to the development of lamb sector by the offer of new products to the consumer market. The objective of this work was to
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/04/2012
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2. Production flush of Agaricus blazei on Brazilian casing layers
This study aimed to verify the biological efficiency and production flushes of Agaricus blazei strains on different casing layers during 90 cultivation days. Four casing layers were used: mixture of subsoil and charcoal (VCS), lime schist (LSC), São Paulo peat (SPP) and Santa Catarina peat (SCP); and two genetically distant A. blazei strains. The fungus was
Brazilian Journal of Microbiology. Publicado em: 2011-06
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3. Estudo em laboratório e em campo de colunas granulares encamisadas com geossintéticos
The construction of embankments on soft soils is a common challenge to be faced by geotechnical engineers. Several techniques have been developed to improve the performance of such works and the use of geosynthetics for the stabilisation of the soft soil or embankment reinforcement has been increasingly employed. The use of granular columns is also a traditi
Publicado em: 2009
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4. Estudos de Durabilidade Frente ao Ataque Ácido de Compósitos Portland-Polímero para Cimentação de Poços de Petróleo
Portland-polymers composites are promising candidates to be used as cementing material in Northeastern oil wells of Brazil containing heavy oils submitted to steam injection. In this way, it is necessary to evaluate its degradation in the commonly acidizind agents. In addition, to identify how aggressive are the different hostile environments it is an import
Publicado em: 2008
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5. NUMERICAL ANALYSIS OF MECHANICAL BEHAVIOR OF THE SALT IN OIL WELLS / ANÁLISE NUMÉRICA DO COMPORTAMENTO MECÂNICO DO SAL EM POÇOS DE PETRÓLEO
The presence of saline structures around the world, in deepwater like the ones of the Mexican Gulf, Brazil, Angola, North and West Africa, provides favorable conditions for hydrocarbons imprisonment. It increases the probability of success in oil and gas exploration. In the Santos Basin, for example, it was recently noticed that a light crude oil located bel
Publicado em: 2008
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6. Validação de uma metodologia de ensaio de resistência ao cisalhamento para avaliação da aderência de interfaces revestimento metálico-bainha de cimento aplicada a poços de petróleo
Improving the adherence between oilwell metallic casing and cement sheath potentially decrease the number of corrective actions present/y necessary for Northeastern wells submitted to steam injection. In addition to the direct costs involved in the corrective operations, the economic impact of the failure of the primary cementing aIso includes the loss in th
Publicado em: 2007
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7. Avaliação do comportamento reológico de pastas de cimento para poços de petróleo com adição de plastificantes
The isolation of adjacent zones encountered during oilwell drilling is carried out by Portland-based cement slurries. The slurries are pumped into the annular positions between the well and the casing. Their rheological behavior is a very important component for the cementing process. Nowadays, several alternative materials are used in oilwell cementing, wit
Publicado em: 2006
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8. 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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9. ANÁLISIS DEL COMPORTAMIENTO DE COLUMNAS DE REVESTIMIENTO FRENTE AL MOVIMIENTO DE SAL EN POZOS DE PETRÓLEO / ANALYSIS OF CASING STRESSES IN OIL WELLS DUE TO THE CREEP OF ROCK SALT / ANÁLISE DO COMPORTAMENTO DE COLUNAS DE REVESTIMENTO FRENTE À MOVIMENTAÇÃO DE SAL EM POÇOS DE PETRÓLEO
Este trabalho apresenta procedimentos para análise dos esforços em colunas de revestimento instaladas em um poço de petróleo, sob a ação do fenômeno de fluência do sal, sendo também abordado os principais aspectos da estabilidade e deformabilidade das rochas salinas durante a fase de perfuração. Para a discretização e solução das equações di
Publicado em: 1999
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10. Simulação numerica do comportamento mecanico do sal em poços de petroleo
Drilling incidents such as stuck pipe and collapsed casing string take place when some type of salt formations are drilled because of the high pronounced plastic behavior of the salt and the creep behavior as a function of time of this type of rock. The creep behavior becomes faster and more severe if temperature and/or pressure acting on the salt go up. The
Publicado em: 1997
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11. Modelagem do plunger lift convencional
A hydrodynamic model is developed for the cyclic process of a conventional plunger lift installation. The reservoir production is taken into account at each instant of the cycle by means of an Inflow Performance Relationship (IPR). The plunger is considered as a perfect seal, i.e., it permits neither liquid fallback nor gas passing through it. It is assumed
Publicado em: 1994
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12. Identification of exopolysaccharides produced by fluorescent pseudomonads associated with commercial mushroom (Agaricus bisporus) production.
The acidic exopolysaccharides (EPSs) from 63 strains of mushroom production-associated fluorescent pseudomonads which were mucoid on Pseudomonas agar F medium (PAF) were isolated, partially purified, and characterized. The strains were originally isolated from discolored lesion which developed postharvest on mushroom (Agaricus bisporus) caps or from commerci