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Seismic Data

ADAPTIVE SINGULAR VALUE DECOMPOSITION FILTERING TO ENHANCE REFLECTORS AND GEOLOGICAL STRUCTURES IN 3D SEISMIC DATA

ADAPTIVE SINGULAR VALUE DECOMPOSITION FILTERING TO ENHANCE REFLECTORS AND GEOLOGICAL STRUCTURES IN 3D SEISMIC DATA

... of seismic data, making reflections more evident, and at the same time attenuating non-coherent ...of seismic data processing ...of seismic profiling ...The data inside windows ...

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APPLICATION OF THE EMPIRICAL MODE DECOMPOSITION METHOD TO GROUND-ROLL NOISE ATTENUATION IN SEISMIC DATA

APPLICATION OF THE EMPIRICAL MODE DECOMPOSITION METHOD TO GROUND-ROLL NOISE ATTENUATION IN SEISMIC DATA

... The EMD method applied in the frequency domain limited to the frequency bandwidth of the ground-roll was more effective than the other methods, generating a high-quality stacked seis- mic section, in which the reflectors ...

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USING SEISMIC DATA FROM THE OIL AND GAS INDUSTRY FOR OCEANOGRAPHIC STRUCTURES DETECTION

USING SEISMIC DATA FROM THE OIL AND GAS INDUSTRY FOR OCEANOGRAPHIC STRUCTURES DETECTION

... the data used, there may be a large difference be- tween the use of legacy data and data from a specific designed survey in seismic oceanography ...of data is tremendous. On the other ...

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PRONY FILTERING OF SEISMIC DATA: MATHEMATICAL AND PHYSICAL MODELLING

PRONY FILTERING OF SEISMIC DATA: MATHEMATICAL AND PHYSICAL MODELLING

... processing seismic signals close to real ...the seismic signals behaviour at high frequencies can be determined and what features of the media structure they can correspond ...real seismic ...

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Joint inversion of magnetotelluric and seismic data for crustal characterization

Joint inversion of magnetotelluric and seismic data for crustal characterization

... geophysical data considered to have the best resolution capability are processed first and some of the features ...the seismic refraction and DC resistivity inversion routines are ...and seismic ...

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Q FACTOR ESTIMATION FROM SURFACE AND VSP SEISMIC DATA: A NUMERICAL MODELING STUDY

Q FACTOR ESTIMATION FROM SURFACE AND VSP SEISMIC DATA: A NUMERICAL MODELING STUDY

... the seismic signal and the energy lost in each ...the seismic pulse suffer more the attenuation effects than the lower frequency components, resulting in loss of resolution of the ...VSP data more ...

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DECONVOLUTION OF SEISMIC DATA USING PHASE CHANGE OPERATORS

DECONVOLUTION OF SEISMIC DATA USING PHASE CHANGE OPERATORS

... Porsani & Ursin (1998) used the solution of Yule-Walker ex- tended equations and proved that it is possible to obtain mixed- phase filters associated with minimum phase wavelet. These au- thors estimated the ...

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Features of Phase Spectrum and its Calculation in the Seismic Data Processing

Features of Phase Spectrum and its Calculation in the Seismic Data Processing

... of seismic trace is an extremely important characteristic in the analysis of seismic signals related to the lo- cal ...practical seismic exploration, and the number of publications on the subject is ...

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PROCESSING AND IMAGING OF MARINE SEISMIC DATA FROM THE JEQUITINHONHA BASIN (BAHIA, BRAZIL)

PROCESSING AND IMAGING OF MARINE SEISMIC DATA FROM THE JEQUITINHONHA BASIN (BAHIA, BRAZIL)

... marine seismic data from a set collected over sedimentary basins of the East Brazilian ...The data-driven results can be used to trace the reflector boundaries in the time sections, submitted to ...

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ATTENUATION OF SHORT-PERIOD MULTIPLES IN SEISMIC DATA PROCESSING OF THE JEQUITINHONHA BASIN, BRAZIL

ATTENUATION OF SHORT-PERIOD MULTIPLES IN SEISMIC DATA PROCESSING OF THE JEQUITINHONHA BASIN, BRAZIL

... The Wiener-Levinson predictive deconvolution method is one of the most useful and well known filter methods used in the seismic data processing flow.. It is a statistical approach to red[r] ...

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Prony filtration of seismic data: theoretical background

Prony filtration of seismic data: theoretical background

... of seismic data processing called Prony filtration ...of seismic traces helps to improve resolution of short seismic signals and to iden- tify areas with anomalous values of scattering ...that ...

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SUBSURFACE STRESS PREDICTION USING SEISMIC DATA FOR OIL AND GAS EXPLORATION

SUBSURFACE STRESS PREDICTION USING SEISMIC DATA FOR OIL AND GAS EXPLORATION

... conventional seismic investigations to obtain the P and S wave velocities and densities ...of seismic boundaries in the sedimentary basins can be ...

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Pre-failure behaviour of an unstable limestone cliff from displacement and seismic data

Pre-failure behaviour of an unstable limestone cliff from displacement and seismic data

... Extensometric data show a general increase of the rock slice – massif dis- tance from August to October ...These data were approximately fitted by a time power law t α where ...rainfall data shows ...

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SEISMIC DATA INVERSION BY CROSS-HOLE TOMOGRAPHY USING GEOMETRICALLY UNIFORM SPATIAL COVERAGE

SEISMIC DATA INVERSION BY CROSS-HOLE TOMOGRAPHY USING GEOMETRICALLY UNIFORM SPATIAL COVERAGE

... in seismic tomography processing is least squares and derived algorithms, using as input data the vector of first ...real data; and then the vector of measured times was generated with known velocity ...

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CRS SEISMIC DATA IMAGING SYSTEM: A CASE STUDY FOR BASIB REEVALUATION

CRS SEISMIC DATA IMAGING SYSTEM: A CASE STUDY FOR BASIB REEVALUATION

... the data quality is low and the obtai- ned macro-velocity models are not so much reliable, poststack depth migration could compete with prestack depth migration in view of resolution and image ...

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BEHAVIOR OF STRESSES AND HYDRODYNAMICS FROM MULTICOMPONENT SEISMIC DATA

BEHAVIOR OF STRESSES AND HYDRODYNAMICS FROM MULTICOMPONENT SEISMIC DATA

... The key stress parameters of a section discontinuity (namely, overburden pressure, normal components of horizontal stress, intensity of tangential stress), for horizontal and non-horizon[r] ...

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Seismic Denoising Through Improved Algorithm  Curvelet Transform

Seismic Denoising Through Improved Algorithm Curvelet Transform

... for seismic data denoising is first to apply wavelet transform on the noisy seismic data and then to introduce a log gabor filter inside the curvelet ...

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Rev. Bras. Geof.  vol.18 número2

Rev. Bras. Geof. vol.18 número2

... refraction seismic data (see ...reported data involve uncertainties ± ...crustal seismic velocities (Christensen & Mooney, 1995), ranging from ...

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Wave-equation based traveltime seismic tomography – Part 1: Method

Wave-equation based traveltime seismic tomography – Part 1: Method

... broadband seismic arrays have resulted in the prolif- eration of seismic ...in seismic data processing, fast and automatic traveltime picking algorithms with high accuracy are highly demanded ...

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Rev. Bras. Geof.  vol.26 número3

Rev. Bras. Geof. vol.26 número3

... the seismic resolution, and of the quality of the seismic images to the industry of petroleum, has motivated the development of new filtering techniques for processing of the seismic reflection ...

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