3 D Seismic Data
Mostrando 1-12 de 14 artigos, teses e dissertações.
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1. Propagação guiada de ondas de VLF: aplicação ao estudo de fenômenos atmosféricos e naturais
Deep amplitude minima are observed in the daily records of Very Low Frequency (VLF, between 3 - 30 kHz) wave amplitudes. Amplitude minima are attributed to modal interference and modal conversion of waves propagating in the Earth - Ionosphere waveguide. The time of amplitude minima is related with the localization of the Terminator line and, therefore, is de
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/02/2012
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2. Métodos geoestatísticos de co-estimativas: aplicação aos dados do Campo Escola de Namorado / Co-estimation geostatistical methods: applications to the Namorado Oil Field data
Data used for studying petroleum reservoirs are obtained through drill core, well logs, seismic records and, as a consequence, they present different sampling scales. Multivariate geostatistics is a manner of integrating these data in order to co-estimate a poorly sampled variable based not only on its own information but also on a densely sampled variable.
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/06/2011
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3. REGISTRO DE SÍSMICA 3D A DADOS DE POÇOS / REGISTRATION OF 3D SEISMIC TO WELL DATA
Data acquired directly from borehole are more reliable than seismic data, and then, the first can be used to adjust the second. This work proposes the correction of a volume of seismic amplitudes through a three step algorithm. The first step is the identification of common features in both sets using a pattern recognition algorithm. The second step consists
Publicado em: 2009
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4. MODELAGEM 3D DE PRESSÃO DE POROS A PARTIR DE DADOS DE POÇOS / 3D PORE PRESSURE MODELING FROM WELL DATA
Tridimensional (3D) modeling of pore pressure gradient is usually based on seismic data and calibrated with well data. Tridimensional models based exclusively in well data are not common in the oil industry. However, well data are regulary used to derive unidimensional models of the pore pressure gradient. The current work presents 3D models of pore pressure
Publicado em: 2009
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5. USING POINT BASED TECHNIQUES FOR SEISMIC HORIZONS VISUALIZATION / USO DE TÉCNICAS BASEADAS EM PONTOS PARA VISUALIZAÇÃO DE HORIZONTES SÍSMICOS
Seismic horizon visualization stands as an important knowledge area used to support exploration on the oil industry. Different techniques currently employed to render this kind of surfaces are usually based on polygonal meshes generation, which benefits from graphics boards optimization on drawing triangles. This work is an evaluation of Point Based renderin
Publicado em: 2009
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6. FAULT MESHING GENERATION IN SEISMIC DATA BY COMPETITIVE LEARNING / GERAÇÃO DE MALHAS DE FALHAS EM DADOS SÍSMICOS POR APRENDIZADO COMPETITIVO
Manual fault mapping from 3D seismic data is a time-consuming task. A plethora of seismic attributes has been proposed to enhance the discontinuity measures associated with faults. However, faults viewed through these attributes appear more like trends than well-defined, continuous surfaces, posing obstacles to the automation of the fault modeling process. T
Publicado em: 2008
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7. 3D OPACITY IN VOLUME RENDERING OF SEISMIC DATA / OPACIDADE 3D NA VISUALIZAÇÃO VOLUMÉTRICA DE DADOS SÍSMICOS
This work proposes a 3D opacity technique for the volume rendering of seismic data. The greater challenge of volume rendering is to define a multidimensional transfer function better adapted to the data to be visualized. This work presents a transfer function that uses three 1D color tables to compose a 3D color table. The work from Silva[30] about 2D opacit
Publicado em: 2007
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8. MAPPING HORIZONS AND SEISMIC FAULTS FROM 3D SEISMIC DATA USING THE GROWING NEURAL GAS ALGORITHM / MAPEAMENTO AUTOMÁTICO DE HORIZONTES E FALHAS EM DADOS SÍSMICOS 3D BASEADO NO ALGORITMO DE GÁS NEURAL EVOLUTIVO
In this work we present a clusterization-based method to map seismic horizons and faults from 3D seismic data. We describe a method used to quantize an initial seismic volume using a trained instance of the Growing Neural Gas (GNG) algorithm. To accomplish this task we create a training set where each sample corresponds to an entry volume voxel, retaining it
Publicado em: 2007
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9. 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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10. "Crustal structure of central sector of Tocantins Province by using P and S waves as well as reflected phases with deep seismic refraction data" / "Estrutura crustal do setor central da província Tocantins utilizando ondas p, s e fases refletidas com dados de refração sísmica profunda"
Esta pesquisa está baseada na execução de duas linhas de refração sísmica profunda de 300 km de extensão (L1-Porangatu e L2-Cavalcante) atravessando de oeste para leste o setor central da Província Tocantins, utilizando em cada linha 120 sismógrafos digitais e explosões com tempo controlado e cargas entre 500 e 1000 kg de explosivos a cada 50 km; f
Publicado em: 2006
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11. Processamento e interpretação de dados 2D e 3D de GPR :aplicações no imageamento de feições kársticas e estruturas de dissolução no campo de petróleo de Fazenda Belém-CE
In Fazenda Belém oil field (Potiguar Basin, Ceará State, Brazil) occur frequently sinkholes and sudden terrain collapses associated to an unconsolidated sedimentary cap covering the Jandaíra karst. This research was carried out in order to understand the mechanisms of generation of these collapses. The main tool used was Ground Penetrating Radar (GPR). Th
Publicado em: 2006
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12. VISUALIZAÇÃO VOLUMÉTRICA DE HORIZONTES EM DADOS SÍSMICOS 3D / VOLUME VISUALIZATION OF HORIZONS IN 3-D SEISMIC DATA
This work presents aspects of volume visualization of seismic horizons in 3-D seismic data. We consider both the direct and indirect approaches of volume visualization. In the direct approach we investigate the problem of selecting horizons using transfer functions. We present the 2-D opacity technique, which seeks to increase the ability to select horizons
Publicado em: 2004