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The AAPG/Datapages Combined Publications Database
Showing 1,537 Results. Searched 200,357 documents.
Abstract: Gas Field Characterization Through the Use of Multi-Resolution Seismic Attributes; #90211 (2015)
Robert McGrory, Robert Pinnegar, and Robert Stewart
Search and Discovery.com
... seismic “attributes”. Multi-resolution techniques, such as wavelet transforms, provide a means of obtaining spectral-decomposition attributes, not only...
2015
Eavesdrop during sand cleanout well intervention with distributed acoustic sensing
Ivan Lim Chen Ning, Bradley Barnum, Xinhui Min, Monika Valjak, Brian Arias, Yanfen Zhang, Kai Sun, Ozzy Isabu
International Meeting for Applied Geoscience and Energy (IMAGE)
...). Such operation in obtaining low frequency strain-rate 𝐯̇ ( 𝑡) is also equivalent to convolution (∗) of a boxcar operator 𝑔(𝑡) and the strain-rate tensor dat...
2024
Reliability estimation of the prediction results by 1D deep learning ATEM inversion using maximum depth of investigation
Hyeonwoo Kang, Minkyu Bang, Soon Jee Seol, Joongmoo Byun
International Meeting for Applied Geoscience and Energy (IMAGE)
... response is calculated with convolution of impulse response with a triangular current waveform with unit moment as shown in equation (3...
2022
When the Syn-Depositional Climatic Variations Influence My Source Rock Properties The Case Study of the Vaca Muerta, #51523 (2018).
Alain Lejay, Johannes Monkenbusch, Lionel Martinez, Gregory N. Boitnott, Laurent Louis, François Gelin
Search and Discovery.com
... in the regional Rosetta stone stratigraphic chart (Gonzalez Tomassini et al., 2016). Fourier Transform Infra-Red Spectroscopy (FTIR) and Impulse Hammer (IH...
2018
Adaptive Eigenstructure Classification and Stochastic Decorrelation Filters for Coherent Interference Suppression in the Acoustic Zoom Method, #41503 (2014).
J. Guigne, S. Azad, C. Clements, A. Gogacz, W. Hunt, A. Pant, J. Stacey
Search and Discovery.com
... into convolutional form to allow efficient processing using Fourier transforms. In the hierarchy of beamforming methods that includes delay-sum (Bartlett beamformer...
2014
Abstract: Spectral Decomposition with Real Seismic Wavelet; #90187 (2014)
Rongfeng Zhang
Search and Discovery.com
... in seismic interpretation. There are several approaches used, from the popular Short Time Fourier Transform (STFT) and Continuous Wavelet Transform (CWT...
2014
Residual noise attenuation of poststack seismic data using t-p-x decomposition
Sujith Swaminadhan, Shuvajit Bhattacharya, Sergey Fomel
International Meeting for Applied Geoscience and Energy (IMAGE)
... yield erroneous and uncertain results. Hence, it is essential to clean and enhance the post-stack data. Generally, a denoising method transforms...
2024
ABSTRACT: Well-log Feature Extraction Using Wavelets and Genetic Algorithms; #90007 (2002)
Rivera, Nestor, Shubhankar Ray, Andrew Chan, Jerry Jensen
Search and Discovery.com
... The Fourier transform is perhaps the best known method for spectral analysis.2 This transform has the limitation that it can be evaluated at only one...
Unknown
Abstract: Time-Frequency Polarization Analysis and Filtering; #90211 (2015)
Robert Pinnegar
Search and Discovery.com
... to understand if we start by thinking of the whole seismogram in terms of the Fourier transforms of its orthogonal components (Pinnegar, 2006). The Fourier...
2015
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)
... transforms are conventional techniques for signal analysis. Fourier transform is applied for stationary signals, that is, signals whose properties do...
2020
Physics-based preconditioned multidimensional deconvolution in the time domain
David Vargas, Ivan Vasconcelos, Matteo Ravasi, Nick Luiken
International Meeting for Applied Geoscience and Energy (IMAGE)
... the form of W = F−1 WF, where F and F−1 are forward and inverse Fourier transforms. To better constrain the inversion, preconditioners can be chained...
2022
Abstracts: Empirical Mode Decomposition and Robust Seismic Attribute Analysis; #90173 (2015)
Jiajun Han and Mirko van der Baan
Search and Discovery.com
... that obtained using traditional time-frequency analysis tools, such as Fourier transform and wavelet transforms. Also known as the Hilbert-Huang transform...
2015
ABSTRACT: Organic matter in the Upper Devonian New Albany Shale of the Illinois Basin: From basin scale to nanometer scale
Bei Liu, Maria Mastalerz, Juergen Schieber
The Society for Organic Petrology (TSOP)
... petrography, scanning electron microscopy, and micro-Fourier transform infrared spectroscopy were employed to document the stratigraphic variations...
2019
Abstracts: Clay Minerals from Some Upper Cretaceous Bentonites, Southwestern Alberta
W. R. Maiklem
CSPG Bulletin
... chlorite. Fourier transforms of the mixed-layer clays show three component interstratifications which in three of the bentonites are within...
1965
Abstract: Relative Permeability and its Relation to Sandstone Microfabric, by C. M. Prince and R. Ehrlich; #90937 (1998).
Search and Discovery.com
1998
Abstract: Spectral Analyses of 3-D GPR Data Reveal the Morphology of Shoreface Deposits in the Upper Cretaceous Ferron Sandstone Formation, Utah, by Lee Keumsuk, Robert B. Szerbiak, and George A. McMechan; #90078 (2008)
Search and Discovery.com
2008
Abstract: Spectral Decomposition Applications; #90211 (2015)
Satinder Chopra, John Castagna, and Vladimir Alexeev
Search and Discovery.com
..., viz the Discr ete Fourier Transform (DFT) met hod (Partyka et al 1999) and the Inst antaneous Spectral Analysis (I SA) (wavelet transform) method...
2015
Abstract: Enhancing Stratigraphic Features by Spectral Decomposition, Case Studies from Saudi Arabia; #90319 (2018)
Schuman Wu
Search and Discovery.com
... and frequency transforms (Discrete Fourier) with seismic horizon at the center of a time window (120-160 ms) to generate a frequency cube (0 to Nyquist Hz), (4...
2018
Abstract: Organic Matter Accumulation and Thermal Maturation in the Upper Devonian New Albany Shale of the Illinois Basin;
Bei Liu, Maria Mastalerz, Juergen Schieber
Search and Discovery.com
...-Fourier transform infrared spectroscopy were employed to document the stratigraphic variations of OM content and type, organic maceral transformation...
Unknown
Optimized downward continuation for the one-way wave equation in TTI media
Cosmin Macesanu, Faqi Liu
International Meeting for Applied Geoscience and Energy (IMAGE)
... wave equation in TTI media Cosmin Macesanu*, Faqi Liu, TGS Summary This paper proposes an enhancement to the accuracy of the Fourier Finite Difference...
2022
Angle-constrained VSP least-squares reverse-time migration based on a high-efficiency stabilized Poynting vector
Xuan Ke, Mauricio Sacchi, Ying Shi
International Meeting for Applied Geoscience and Energy (IMAGE)
...stabilized Poynting vector where 𝑖 is the imaginary unit and 𝜔 is the angular frequency. By substituting equations (7) and (8) into equation (3),...
2023
Abstract: Detecting Stratigraphic Discontinuities using Wavelet and S-Transform Analysis of Well Log Data; #90174 (2014)
Akhilesh K. Verma, Burns A. Cheadle, William K. Mohanty, Aurobinda Routray, and Lalu Mansinha
Search and Discovery.com
..., the basic Fourier transforms are limited to sinusoidal signals, whereas the continuous wavelet transform can be performed based on many wavelet types...
2014
Abstract: Recovering Low Frequencies for Impedance Inversion by Frequency Domain Deconvolution; #90224 (2015)
Sina Esmaeili and Gary Frank
Search and Discovery.com
... 12-16, 2014 Spectral smoothing Returning to the deconvolution process, the first step was to take the magnitude of the complexvalued Fourier spectra...
2015
Abstract: Prestack Depth Migration with the Gabor Transform; #90211 (2015)
Yongwang Ma and Gary Margrave
Search and Discovery.com
... redundancy in computations. That is, the algorithm without adaptive windowing usually calculates more windowed Fourier transforms than it requires...
2015
Fourier Grain Shape Analysis as a Tool for Indicating Batch Recoveries of Bitumen from Athabasca Tar Sands: ABSTRACT
Marian McNally Smith, Robert Ehrlich, Arvid Hardin
AAPG Bulletin
...Fourier Grain Shape Analysis as a Tool for Indicating Batch Recoveries of Bitumen from Athabasca Tar Sands: ABSTRACT Marian McNally Smith, Robert...
1983