A simultaneous wavefield separation and denoising approach for vertical seismic profile using geometric mode decomposition

Salman Abbasi, Jubran Akram, Andres Chavarria, Vikram Jayaram, Iftekhar Alam, Dmitry Borisov, Yanwei Zhang

International Meeting for Applied Geoscience and Energy (IMAGE)

... include FK filtering, radon transform and median filtering. The presence of noise impedes effective separation of these methods and affects the fidelity...

Analysis of Fracture Injection Tests using Signal Processing Approach

I. Eltaleb, A. Rezaei, F. Siddiqui, M. M. Awad, M. Mansi, B. Dindoruk, M. Y. Soliman

Unconventional Resources Technology Conference (URTEC)

.... We briefly review the mathematical aspects of the proposed approach in the next section. After that, we present four DFIT examples in the Results...

Abstract: Numerical Classification of Sandstone Pore Structure, by J. C. Davis, F. W. Preston; #90972 (1976).

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Suppression of coherent and random noise using adaptive thresholding method in seismic-while-drilling

Yue Ma, Yujin Liu

International Meeting for Applied Geoscience and Energy (IMAGE)

... spectra of the data 𝑑(𝑡, 𝑥) obtained by a 2D Fourier transform. Since the energy of coherent noise and background random noise are usually...

The emergence and impact of scientific machine learning in geophysical exploration

Umair bin Waheed

International Meeting for Applied Geoscience and Energy (IMAGE)

... in the field of geophysical modeling and inversion using emerging SciML paradigms, including physics-informed neural networks (PINNs), Fourier neural...

Abstract: Interpolation of Aliased Seismic Data in the Curvelet Domain; #90172 (2014)

Mostafa Naghizadeh, Mauricio D. Sacchi

Search and Discovery.com

... propose a robust interpolation scheme for aliased regularly sampled seismic data that uses the curvelet transform. In a first pass, the curvelet transform...

Improving curvature analyses of deformed horizons using scale-dependent filtering techniques

Stephan Bergbauer, Tapan Mukerji, Peter Hennings

AAPG Bulletin

... (Fourier [spectral] analysis, wavelet transform filtering, singular value decomposition, factorial kriging) on a seismically mapped horizon in the North...

Increasing The Resolution of Seismic Imaging With Spectral Blueing, Spectral Decomposition RGB And HSV Blending to Delineate The Fluvial Facies on Fluvio Deltaic Environment

Aji Darma Maulana, Nine Safira, Ongki Ari Prayoga, Egie Wijaksono, Alit Ascaria

Indonesian Petroleum Association

... Fourier transform on the reflectivity data from the acoustic impedance. The amplitude spectrum of the data well will be carried out by a mathematical...

Theory and Applications of Time Series Analysis to Wireline Logs: Chapter 5

John H. Doveton

AAPG Special Volumes

..., An algorithm for the machine computation of complex Fourier series: Mathematical Computation, v. 19, p. 297-301. Cox, D. R., and P. A. W. Lewis, 1966...

An Exact Method for Characterization of Grain Shape

Robert Ehrlich, Bernhard Weinberg

Journal of Sedimentary Research (SEPM)

...) For the purpose of evaluation, it is convenient to transform the Fourier series of equation (1) to the form [EQUATION (7) wherein the transformations...

Optical Data Processing of Multispectral Photographs of Sedimentary Structures

Howard J. Pincus , Syed A. Ali

Journal of Sedimentary Research (SEPM)

... beam. The resulting diffraction pattern is the two-dimensional Fourier transform of the input, in this case a photograph. Frequency distributions...

Fourier Grain-Shape Analysis of Coastal and Inner Continental-Shelf Sand Samples: Oceanside Littoral Cell, Southern Orange and San Diego Counties, Southern California

Robert H. Osborne, Chia-Chen Yeh

Special Publications of SEPM

... employed in this report makes use of the newer This and more widely used Fast Fourier Transform FFT involves the calculation of many values...

A Semi-analytical Solution of the Induced Stress Change in a Layered Reservoir Based on the Stress Formulation

Shihao Wang, Yanbin Zhang, Ouassim Khebzegga, Bin Wang, Zhe Liu, Xian-Huan Wen

Unconventional Resources Technology Conference (URTEC)

... rocks. We apply Fourier’s transform to the governing hydromechanical equation and enforce continuity conditions on the interfaces between neighboring...

Calibration of Continuous Wavelet Transform (CWT) Fracture Closure Detection Using Laboratory Hydraulic Fracturing Experiments

Mohamed A. Gabry, Zhi Ye, Amr Ramadan, Ahmad Ghassemi, Mohamed Y. Soliman

Unconventional Resources Technology Conference (URTEC)

... the CWT fracture closure detection technique. They chose Wavelet Transform (WT) as a signal processing technique to overcome these limitations of Fourier...

Optimal Configuration and Information Content of Sets of Frequency Distributions

William E. Full , Robert Ehrlich, Stephen K. Kennedy

Journal of Sedimentary Research (SEPM)

... southern Monterey Bay, California--Fourier shape analysis: Jour. Sed. Petrology, v. 49, p. 727-732. SHANNON, E., 1948, The mathematical theory...

Seismic Modelling in 3D for Migration Testing

Search and Discovery.com

... frequency, F is the 2D Fourier transform over the lateral spatial coordinates, F−1 is its inverse, ψsource is a mathematical model of the source, and iz k 2...

Analysis of Spatial Order in Sandstones II: Grain Clusters, Packing Flaws, and the Small-Scale Structure of Sandstones

Christopher M. Prince, Robert Ehrlich, Yannick Anguy

Journal of Sedimentary Research (SEPM)

... to be associated with enhanced fluid flow. Using a two-dimensional Fourier transform it is possible to identify these flawed zones and examine not only...

Seismic noise attenuation via learned and analytical basis functions

Yi Guo, Rongzhi Lin, Mauricio D. Sacchi

International Meeting for Applied Geoscience and Energy (IMAGE)

... be any conventional transform, like a local Fourier basis, wavelets, or curvelets. Because the global basis is trained from the filtered data, it cannot...

Magneto-Telluric Method Applied to Geothermal Prospecting*

Gerard Cormy

Southeast Asia Petroleum Exploration Society (SEAPEX)

... on an analysis method which does not use the Conventional Fourier transform. In fact, the recording method provides for a new concept in analysis...

Spectral Decompostion for a More Accurate Image; #41807 (2016)

Rongfeng Zhang

Search and Discovery.com

.... There are several ways of performing spectral decomposition of seismic data in terms of the mathematical method adopted, such as short-time Fourier transform...

An improved Holo-Hilbert spectral analysis guided by fast matching pursuit

Chaohe Wang, Zhaoyun Zong

International Meeting for Applied Geoscience and Energy (IMAGE)

... layer. Figure 2c shows the time-frequency spectrum obtained by the short time Fourier transform and HoloHilbert spectrum obtained by the Holo-Hilbert...

Multipole borehole acoustics in the presence of an constraints elastic tool

Tim Geerits, Stefan Schimschal, Anna Swiatek

International Meeting for Applied Geoscience and Energy (IMAGE)

... transform the borehole fluid wavefield back to the  r ',  ', kz , s  domain using the inverse Fourier transformation, i.e., back from m...

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...

Methodology for Enhancing and Evaluating Geologic Effects of Time Series Models: A Case of Ground Response in Santa Clara Valley, California, #41097 (2012)

Olusola Samuel-Ojo, Lorne Olfman, Linda A. Reinen, Arjuna Flenner, David D. Oglesby, Gareth J. Funning

Search and Discovery.com

... Fourier Transform algorithm for Averaging, Laplacian and Laplacian of Gaussian (LoG) filter. Filtering is a procedure that visits each element...

Abstract: Wide Azimuth Interpolation; #90211 (2015)

Daniel Trad, Jeff Deere, and Scott Cheadle

Search and Discovery.com

... is to regularize the data; this is to move the traces to a regular grid. Antileakage Fourier Transform (Xu et. al, 2005) and the pyramid transform (Hung et...