Seismic Estimation of Point-Bar Sands Using Simple Modeling Procedures

Robert Dennison

Indonesian Petroleum Association

... the reciprocal i.e. i/f, of every frequency point. Once G(w) had been computed an Inverse Fourier Transform converts the wavelet spectrum back into the time domain...

Abstract: Kirchhoff Imaging with Adaptive Greens Functions for Compensation for Dispersion, Attenuation, and Velocity Imprecision; #90187 (2014)

Andrew V. Barrett

Search and Discovery.com

... spectrum. This is accomplished by taking the Fourier transform of Wsrx, scaling each complex Fourier component by the inverse of its complex amplitude...

Hybrid 3D Marine Towed-Streamers and Ocean-Bottom Nodes Survey - Challenges and Solutions for Seismic Data Processing and Imaging

Wai Leng Cheah, Wong Li Ming Joyce, Evonne Hooi Rong Yu, Artem Sazykin, Gavin Menzel-Jones

Indonesian Petroleum Association

... and this component is added to the estimated spectrum. Additionally, an inverse Fourier transform of the selected Fourier component is computed and, finally...

Abstracts: Prestack Interpolation of a Sparsely Acquired and Heavily Structured 3D Land Data Set; #90173 (2015)

Dan Negut, Dave Ganley, Muyi Kola-Ojo, Dennis Quinn, Juefu Wang, Angela Truong, and David Emery

Search and Discovery.com

..., Canada [email protected] Summary Two different prestack interpolation methods, 5D interpolation by Fourier reconstruction and dip-scanbased...

Merging inverse-Q filtering and deconvolution

A. R. Schoepp, G. F. Margrave

CSPG Special Publications

...Merging inverse-Q filtering and deconvolution A. R. Schoepp, G. F. Margrave 1998 167 168...

A practical implementation of data-space Hessian in the time-domain formulation of source extended full-waveform inversion

Gaoshan Guo, Stephane Operto, Ali Gholami, Hossein S. Aghamiry

International Meeting for Applied Geoscience and Energy (IMAGE)

.... In this method, each windowed trace is analyzed using the conventional Fourier transform to obtain a locally-stationary matching filter as ∗ b δ ds,r (ω, τ)δ...

Abstract: 5D Interpolation and Regular Upsampling: Ill-suited or Fit-for-purpose?; #90187 (2014)

Mike J. Perz and Peter W. Cary

Search and Discovery.com

... and also fits the input data upon inverse Fourier transformation.” Here the word “sparse” refers to a Fourier amplitude spectrum containing...

Application of Wave Equation Tomography in Frontier Areas

Tien-when Lo, Guy W. Purnell

Indonesian Petroleum Association

...., 1985, Imaging of discontinuities in the inverse scattering problem by inversion of a causal generalized Radon transform: J. Math. Phys., 26, 99-108...

Abstract: Optimum Aperture Length for Improving Dispersion Curve Analysis in CMP Cross-Correlation of Surface Waves; #90187 (2014)

Roohollah Askari, Robert J. Ferguson, and Helen Isaac

Search and Discovery.com

... the phase velocity for each CMP gather, and, we convert the resulting dispersion curve to a vertical shear wave velocity by an inverse procedure...

Upscaling acoustic wave equation using renormalization group theory

Ajay Malkoti, Shravan M. Hanasoge, Rene Edouard Plessix

International Meeting for Applied Geoscience and Energy (IMAGE)

... of the Gaussian curve. Finally, the values on the coarse grid are obtained with the inverse Fourier transform. Renormalization group theory (URG...

Application of Robust Noise Reduction on a Land 3D Seismic Data

Agus Abdullah, Jesse Shaw

Indonesian Petroleum Association

... consists of three steps: (1) Apply the 2D Fast Fourier Transform (FFT), (2) Multiply with frequency windows and (3) Apply 2D inverse FFT for each...

ABSTRACT: Comprehensive Study of Frequency Response in Carbonate Rocks and Its Leading Factors, by Alhammadi, Miaad K.; Vega, Sandra; Jouini, Mohamed S.; Mokhtar, El Amin; #90141 (2012)

Search and Discovery.com

Geologically Driven Joint Inversion of Gravity, Seismic and Well Data: A Step Forward in Understanding of Geological Structure and Reducing E&P Risks

Search and Discovery.com

When the Syn-Depositional Climatic Variations Influence My Source Rock Properties – The Case Study of the Vaca Muerta

Search and Discovery.com

Geologically Driven Joint Inversion of Gravity, Seismic and Well Data: A Step Forward in Understanding of Geological Structure and Reducing E&P Risks; #70282 (2017)

Oleksandr Petrovskyy, Tetyana Fedchenko

Search and Discovery.com

... techniques. Thus filtration, regional-residual separation, analytical upward-downward continuation, Fourier and wavelet transforms are still used...

Utilizing the Two-Way Wave Equation: Reverse Time Pre-Stack Depth Migration

Matthew H. Karazincir, Clive M. Gerrard, Andrew Long, Lynn B. Comeaux

Indonesian Petroleum Association

... by FFT’ing the whole wavefield in the x, y and z directions, scaling it by 2 k x2 , k y , k z2 , and inverse FFT’ing it back. These Fourier transforms...

AVAZ inversion for brittleness indicator and fracture parameters of gas-bearing reservoirs with tilted transverse isotropy

Yuanyuan Tan, Guangzhi Zhang, Zhengqian Ma, Ying Lin

International Meeting for Applied Geoscience and Energy (IMAGE)

... was directly expressed by a brittleness indicator and fracture density. A hierarchical inversion method based on the discrete Fourier transform was proposed...

Regularization by robust denoising for iterative simultaneous source separation

Breno Bahia, Mauricio D. Sacchi

International Meeting for Applied Geoscience and Energy (IMAGE)

... counterparts of the high-resolution Radon transform (Lin and Sacchi, 2020), singular spectrum analysis (Lin et al., 2021), and Fourier thresholding (Bahia et al...

Improvement of inverse scattering angle-domain common image gathers using optical flow

Ammir A. Karsou, Sérgio L. E. F. da Silva, Felipe V. Capuzzo, Felipe T. Costa, Jorge Lopez, Roger M. Moreira, Marco Cetale

International Meeting for Applied Geoscience and Energy (IMAGE)

... a frequency-wavenumber Fourier transform. Then, a local plane wave decomposition is used to apply the imaging condition for each angle estimated...

Fast Gauss-Newton full-wavefield migration

Siamak Abolhassani, Eric Verschuur

International Meeting for Applied Geoscience and Energy (IMAGE)

... wavenumber, and Fx represents the inverse spatial Fourier transform. Extrapolating the seismic source signature downward from z0 to zN and then upward...

Comparison of EMD and S-Transform Spectral Decomposition for Characterizing Hydrocarbon Reservoir: Case Study of East Java Basin

Abdul Haris, A. M. Ustad, Didik Ardiyanto, Gadang G. Wihardy, Budiyono, Tri Bowo, Murti Widyawan

Indonesian Petroleum Association

..., a problem of scale frequency in the CWT method is resolved through the inverse Fourier transform of the CWT. This method was later named Time Frequency...

Operator chains and seismic data decomposition

Sergey Fomel

International Meeting for Applied Geoscience and Energy (IMAGE)

...) and W f = diag(w f ) are diagonal weighting matrices in the original and frequency domain, respectively, and F represents the Fourier transform...

Structure-and-Amplitude-Preserving Multi-Channel Deconvolution

Search and Discovery.com

... via the inverse Fourier transform. We minimize the above cost function by the Conjugate Gradient (CG) algorithm (Hestenes and Steifel, 1952...

Abstract: 3D Focusing Inversion of Multi-transient EM Data in the Frequency Domain; #90171 (2013)

Guangpin Li, Johnathan Linfoot, and Bruce Hobbs

Search and Discovery.com

... of frequency. Responses at any number of frequencies may be used and these are available through Fourier transformation of the earth’s impulse...

Abstract: Seismic Denoising by Time-Frequency Reassignment; #90174 (2014)

Li Han, David Bonar, and Mauricio Sacchi

Search and Discovery.com

... Reassignment The well-known Short Time Fourier Transform (STFT) of the signal x(t ) can be defined as, G(t, )     x( )h* (  t )e  i d , (1...