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The AAPG/Datapages Combined Publications Database
Showing 5,188 Results. Searched 200,357 documents.
Quantifying Roundness of Detrital Minerals By Image Analysis: Sediment Transport, Shape Effects, and Provenance Implications
Alberto Resentini, Sergio AndÒ, Eduardo Garzanti
Journal of Sedimentary Research (SEPM)
... to the profile Fourier coefficients: Powder Technology, v. 18, p. 19–25. Blatt, H., 1978, Sediment dispersal from Vogelsberg Basalt, Hessen, West Germany...
2018
Deterministic and Statistical Wavelet Processing
Lee Lu
Southeast Asia Petroleum Exploration Society (SEAPEX)
... do is to find the effective wavelet, either by dividing the Fourier transform of x by the Fourier transform of r in frequency domain or by equivalent...
1980
AVO Modeling of Monochromatic Spherical Waves: Comparison to Band-Limited Waves; #41567 (2015)
Charles Ursenbach, Arnim Haase
Search and Discovery.com
... the reflection coefficient for a band-limited wavelet via an inverse Fourier transform, as has been carried out by Haase (2004). We have previously...
2015
Source location using physics-informed neural networks with hard constraints
Xinquan Huang, Tariq Alkhalifah
International Meeting for Applied Geoscience and Energy (IMAGE)
... allows for direct image extraction of the subsurface using inverse Fourier transform. Numerical tests on the Overthrust model demonstrate...
2022
Abstracts: Padé Approximation for Analyzing Multiple Reflections; #90173 (2015)
Dali Zhang, Michael P. Lamoureux, and Gary F. Margrave
Search and Discovery.com
... to transform to the Fourier (or other) domain. We set up the Padé approximation problem using the seismic data directly, with some choice on the rational...
2015
Deblurring migration images with point spread function filter
Cewen Liu, Nanxun Dai, Wei Wu, Xiaofeng Wu, Mingjie Guo, Haohuan Fu
International Meeting for Applied Geoscience and Energy (IMAGE)
... in the wavenumber domain. Taking the spatial Fourier transform of the time-domain 2D convolution of Equation (3), we can obtain...
2022
Abstract: Near-surface Issues in TTI Wave Equation Migration from Topography; #90171 (2013)
Chuck Ursenbach, Richard A. Bale, and Samuel H. Gray
Search and Discovery.com
... ways, such as when the inverse transform leads to a narrow, high-amplitude spike in real space, as shown in Figure 1. Using a rectangular k-filter...
2013
Abstract: Investigating the Low Frequency Content of Seismic Data with Impedance Inversion; #90187 (2014)
Heather J. E. Lloyd and Gary F. Margrave
Search and Discovery.com
... the low-frequency cut-off, , and is selected by the user. Inverse Fourier Transform the result in (7). Add the linear trend that was removed in (1...
2014
Abstract: Parallel Implementation of Pre-stack Least-squares Migration for Distributed Systems; #90171 (2013)
Sam T. Kaplan
Search and Discovery.com
..., respectively, and F denotes the four-dimensional Fourier transform over x g and x s. The operators u p ( k ) and us( k ) are, respectively...
2013
Abstracts: The Deconvolution of Multicomponent Trace Vectors; #90173 (2015)
Xinxiang Li, Peter Cary, and Rodney Couzens
Search and Discovery.com
...) in the Fourier domain. The conjugate transpose of a time shift matrix is again its inverse matrix. Replacing the rotation matrix with a time-shift...
2015
Seismic applications of the Radon transform and a new second-order traveltime local transform
Ehsan Soleymani, Mauricio Sacchi
International Meeting for Applied Geoscience and Energy (IMAGE)
... deconvolution. Initial efforts posed the Radon transform computation as an inverse problem in the ω − x domain. The latter is the classical approach...
2024
Spatial Analysis of Basement and Cover Linears by Optical Diffraction - Methods, Results, and Interpretation
Howard J. Pincus, Thomas W. Doe
Utah Geological Association
... Fourier amplitude transform of the input image. This transform is a graph of the distribution of orientations and spatial frequencies of the elements...
1974
The effects of marine currents on seismic data
Gary Hampson
International Meeting for Applied Geoscience and Energy (IMAGE)
... (Bracewell, 1986). Using Claerebout’s (1985) Fourier kernel, this says that the equivalent Fourier domain Galilean transform is 1 u (3...
2024
Data-embedded physics-informed neural network for electromagnetic wave propagation simulation: Potentials and challenges
Yawei Su, Wenyi Hu, Jiefu Chen, Aria Abubakar
International Meeting for Applied Geoscience and Energy (IMAGE)
... differential equation. To investigate the potential of PINN on inverse problems and to alleviate its drawbacks. We implemented a dataembedded PINN which...
2024
Acoustic waveform inversion with the Lippmann-Schwinger equation constraint
Rahul Sarkar, Biondo Biondi
International Meeting for Applied Geoscience and Energy (IMAGE)
... penalty to higher frequencies. An alternating strategy to minimize Jµ ,λ λ In the above expression, F −1 denotes the inverse Fourier transform, and q(·, z...
2022
Abstract: Quantitative Predication for Reservior Porosity via AVO; #90187 (2014)
Li Ang, Chen Shumin, Zhang Erhua, and Ju Linbo
Search and Discovery.com
.... Geophys., Expanded Abstracts， 252-254． Hargreaves N D’Calvert A J.Inverse Q filtering by Fourier transform. Geophysics,1991,56(4): 519-527...
2014
Integrating Surface Seismic, Microseismic, Rock Properties and Mineralogy in the Haynesville Shale.
Neil Peake, Gabino Castillo, Norbert Van de Coevering, Simon Voisey, Antoine Bouziat, Kevin Chesser, Guy Oliver, Chi Vinh Ly
Unconventional Resources Technology Conference (URTEC)
.... The azimuthal Fourier coefficients were calculated by performing a Fourier transform of azimuthally sectored seismic data over particular ranges...
2014
Deep-Water Depositional Facies and Reservoir Quality Evaluation Based on Fourier Analysis of Gamma-Ray Logs
Fillon, Richard H., Lawless, Paul N.
GCAGS Transactions
... Fourier transform, the simpler fast Fourier transform (FFT) algorithm and wavelet analysis (WA), has effectively demonstrated cyclicity in well log proxy...
2002
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
... the spectrum is obtained, the Inverse Fast Fourier Transform process is carried out. From this process, the seismic cube is obtained from...
2022
DAS noise attenuation using wavelet stack
Zhou Yu, Zhaojun Liu, Ge Zhan, Peng Cheng, Bin Wang, Weihong Fei
International Meeting for Applied Geoscience and Energy (IMAGE)
... methods, like deconvolution or Fourier transform based methods are less effective in addressing these noise problems because of the stationary...
2022
Abstract: Characterizing Dipping Fractures from P-wave Amplitude Versus Azimuth Studies; #90187 (2014)
Jon Downton and Hampson Russell
Search and Discovery.com
.... There are seven unknown parameters for six data basis functions so the inverse problem is fundamentally undetermined. This is consistent...
Unknown
Abstract: On Choosing Differential Operators; #90171 (2013)
John C. Bancroft
Search and Discovery.com
... 15 20 25 N Figure 2 Inverse Fourier transform of the derivative using the tapered frequency, Nfft = 1024, taper starting at 80% of the Nyquist...
2013
Abstract: On Choosing Differential Operators; #90171 (2013)
John C. Bancroft
Search and Discovery.com
... 15 20 25 N Figure 2 Inverse Fourier transform of the derivative using the tapered frequency, Nfft = 1024, taper starting at 80% of the Nyquist...
2013
Accelerating innovation with software abstractions for scalable computational geophysics
Mathias Louboutin, Philipp Witte, Ali Siahkoohi, Gabrio Rizzuti, Ziyi Yin, Rafael Orozco, Felix J. Herrmann
International Meeting for Applied Geoscience and Energy (IMAGE)
..., inverse problems based on the wave-equation (e.g., medical ultrasound). We developed a software environment aimed at scalable research and development...
2022
VMD Based Sedimentary Cycle Division for Unconventional Facies Analysis
Fangyu Li, Tao Zhao, Yin Zhang, Kurt J. Marfurt
Unconventional Resources Technology Conference (URTEC)
..., signal decomposition shows people more hidden information in the data than superficially. As the most classic spectral analysis tool, Fourier transform...
2016