Salt Rocks
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. Estudo paramétrico da influência da temperatura na análise termomecânica durante a escavação em rochas salinas / Parametric study of the influence of temperature in the thermomechanical analysis during salt rock excavation
Este trabalho apresenta um estudo paramétrico para avaliar o efeito da temperatura em problemas de perfuração em rochas salinas. Essas rochas possuem deformação lenta e contínua quando submetidas a tensões constantes, fenômeno conhecido como fluência. Com as recentes descobertas de petróleo em grandes profundidades como, por exemplo, no pré-sal, o
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/09/2011
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2. 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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3. Evolução quimica e isotopica dos fluidos associados a mineralização de Fe-Cu-Au do deposito Alvo 118, provincia mineral de Carajas - PA / Chemical and isotopic evolution of the fluids from the Alvo 118 Fe-Cu-Au do deposit, Carajas mineral province (PA)
The Alvo 118 iron oxide-copper-gold (IOCG) deposit (170 Mt @ 1,0 wt% Cu, 0,3 g/t Au), together with the world-class Sossego and Cristalino deposits, lie in the southern sector of the Carajas Mineral Province (CMP) along a steeply-dipping, WNW-ESE-striking, 60 km-long shear zone, close to the contact of the Itacaiunas Supergroup metavolcano-sedimentary sequen
Publicado em: 2009
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4. Seismic interpretation of post-aptian magmatic events in the Cabo Frio high, Southeast Brazil, its genesis and its relation with pre-salt alignments / Interpretação sísmica dos eventos magmáticos pós-aptianos no alto de Cabo Frio, sudeste do Brasil, gênese e relação com os lineamentos pré-sal
The continental shelf of the Cabo Frio Area, at the southern part of the Campos Basin, shows unique features in its tectono-sedimentary evolution when compared to other areas of the Campos and Santos basins. The presence of a regular pattern of antithetic faults in the basement and in the syn-rift and the post-rift sedimentary sections, along with important
Publicado em: 2006
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5. Geological conditioning aspects for piezocone test interpretation for stratigraphical identification in geotechnical and geo-environmental site investigation / Condicionantes geológicos na interpretação de ensaios de piezocone para identificação estratigráfica na investigação geotécnica e geoambiental
In situ tests for geotechnical and geo-environmental site investigation embraces a variety of soundings and tests to map and define stratigraphic logging and specific design parameters for each kind of job. Stratigraphic logging and soil classification are a common stage to all investigation programs and frequently they are performed throughout logging tests
Publicado em: 2005
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6. Análise multitemporal dos elementos geoambientais da região da Ponta do Tubarão, área de influência dos campos petrolíferos de Macau e Serra, município de Macau/RN
The study area is inserted in Ponta do Tubarão region, Macau City, setentrional littoral of Rio Grande do Norte State, composed of Tertiary and Quatemary sedimentary rocks and sediments. This region is characterized for the intense action of the coastal processes, causing the morphologic instability in part of the area, beyond the interference of human acti
Publicado em: 2004
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7. ESTUDO EXPERIMENTAL DA INTERAÇÃO FOLHELHO-FLUIDO ATRAVÉS DE ENSAIOS DE IMERSÃO / EXPERIMENTAL STUDY OF INTERACTION SHALE-FLUID THROUGH IMMERSION TESTS
Most of borehole instability problems occur when argillaceous rocks such as shales are drilled and the drilling fluid interacts with the rock. The rock-fluid interaction is materialized through the exchange of ions and water molecules between the drilling fluid and the rock, generating pore pressure variation inside the shale and changes in minerals structur
Publicado em: 2003
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8. Riscos e gestÃo ambiental no estuÃrio do Rio malcozinhado, Cascavel-CE
The Rio Malcozinhado lagoon-estuarine system is located in the Cascavel municipality, in the Cearà State Southeastern littoral 75km away from Fortaleza, Northeastern Brazil. Its 380 km2 hydrographic basin lies on basement rocks, Plio- Pleistocene Barreiras Formation sediments and Quaternary deposits. The urban expansion of the area in the last two decades w
Publicado em: 2003
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9. Isolation of Tellurite- and Selenite-Resistant Bacteria from Hydrothermal Vents of the Juan de Fuca Ridge in the Pacific Ocean
Deep-ocean hydrothermal-vent environments are rich in heavy metals and metalloids and present excellent sites for the isolation of metal-resistant microorganisms. Both metalloid-oxide-resistant and metalloid-oxide-reducing bacteria were found. Tellurite- and selenite-reducing strains were isolated in high numbers from ocean water near hydrothermal vents, bac
American Society for Microbiology.