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The AAPG/Datapages Combined Publications Database
Showing 1,541 Results. Searched 200,685 documents.
ABSTRACT: CHEMICAL FUNCTIONALITIES OF HIGH AND LOW SULPHUR COALS: A CASE STUDY USING MICRO ATTENUATED TOTAL REFLECTANCE-FOURIER TRANSFORM INFRARED (ATR-FTIR) SPECTROMETRY TECHNIQUES
Zhongsheng Li, Peter M. Fredericks, Llew Rintoul, Colin R. Ward
The Society for Organic Petrology (TSOP)
...ABSTRACT: CHEMICAL FUNCTIONALITIES OF HIGH AND LOW SULPHUR COALS: A CASE STUDY USING MICRO ATTENUATED TOTAL REFLECTANCE-FOURIER TRANSFORM INFRARED...
2006
Hybrid COV Interpolation & Procesing: A Case Study on NW Tunu Transition Zone, Indonesia
Vishal Kumar, Doddy Biramandita, Wayne Zanussi, Jacques Bonnafe, Natalia Anggriani, M-Adam Cepi
Indonesian Petroleum Association
... and denoising. The data is then 5D regularized using Anti-Leakage Fourier Transform (ALFT) reconstructions (Xu et al, 2005, Poole, 2010) to form COV...
2016
ABSTRACT: Physical and Chemical Characteristics of Peats from Various Depositional Settings: Development of a Peat Sample Bank
Michael S. Roilins, Arthur D. Cohen, James R. Durlg
The Society for Organic Petrology (TSOP)
... chromatography combined with Fourier Transform infrared spectroscopic and flame ionization detection (Py-GCIFT-IRIFID),and pyrolysis GC with mass...
1990
Petrographic and Micro-FTIR Study of Organic Matter in the Devonian-Mississippian New Albany Shale During Thermal Maturation: Implications for Oil-Prone Kerogen Transformation
Search and Discovery.com
N/A
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...
2022
Abstract: Surface-consistent Matching Filter for Time-lapse Processing; #90174 (2014)
Mahdi H. Almutlaq and Gary F. Margrave
Search and Discovery.com
...-hand-side contains its surface consistent components and the "hat" denotes the Fourier transform. However, computing the ratio of two spectra directly...
Unknown
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...
2024
Research on buried hill fracture prediction based on sweet spot attributes of gradient structure tensor in dominant frequency band
Min Gong, Bo Wang, Lin Wang, Rui Wu
International Meeting for Applied Geoscience and Energy (IMAGE)
... Transform (STFT). STFT is a type of Fourier transform algorithm that overcomes the shortcomings of the Fourier transform in terms of time windows. Its main...
2024
Deep learning seismic full-waveform inversion and transient EM joint inversion for near surface velocity modeling
Daniele Colombo, Ernesto Sandoval-Curiel, Ersan Turkoglu, Weichang Li
International Meeting for Applied Geoscience and Energy (IMAGE)
...-Fourier domain. The Laplace-Fourier domain is chosen to transform the field data where the secondary arrivals, such ground roll, can be effectively...
2022
Ultrasound reverse time migration for human brain imaging
Ting Li, Bo Feng, Yang Zhou, Rongwei Xu, Huazhong Wang
International Meeting for Applied Geoscience and Energy (IMAGE)
...) method to reduce spatial numerical dispersion, which uses the Fourier transform to compute spatial derivatives accurately. Secondly, to suppress...
2024
Abstracts: The Conventional and Non-conventional Seismic Differencing; #90173 (2015)
Vanja Vracar and Robert J. Ferguson
Search and Discovery.com
..., t, and distance, d, domain are converted to frequency, f , and wavenumber, , domain invoking Fast Fourier Transform (FFT) and Inverse Fast Fourier Transform...
2015
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...
1984
Direction-dependent strain transfer function of DAS considering gauge length and pulse shape with its implications on high spatial resolution acquisitions
Peter Hubbard
International Meeting for Applied Geoscience and Energy (IMAGE)
... transfer function can be described as the Fourier transform of a scaled rectangular window as: ๐พ๐พ(๐๐ ๐๐ ) = โฑ ๏ฟฝ ฮ ( )๏ฟฝ = 1 ๐ฅ๐ฅ ๐๐ ๐๐ (2) sin...
2022
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...
2003
Optimized characterization workflow for naturally fractured reservoirs using seismic anisotropy attributes in the Middle Magdalena Valley basin, Colombia
Oscar Moreno, Enrique Casaรฑa, Luis Figuera, Ivรกn Higuera, Diego Garcรญa, Jorge Acosta, Benjamin Roure
International Meeting for Applied Geoscience and Energy (IMAGE)
..., Fourier Coefficient and Fourier Coefficient residuals, all of them, assume fractured formations are an HTI medium (Figure 1). Figure 1: Methods...
2023
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...
2022
Application of Wave Equation Tomography in Frontier Areas
Tien-when Lo, Guy W. Purnell
Indonesian Petroleum Association
... and Toksoz, 1987): where (ks, kg) is the 2-D Fourier transform of the scattered wavefield, r is the position vector, ks and ks are the wavenumbers...
1990
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...
2023
Abstract: Applying New Technologies to Old Areas: Relative Geologic Time, Wheeler Diagrams and Near Field Exploration in Faulted Plays
Steve Tobias
Houston Geological Society Bulletin
... of a cartoon-like representation. This transform should be every bit as important to a seismic interpreter as a Fourier or Wavelet Transform...
2018
Abstract: Applying New Technologies to Old Areas: Relative Geologic Time, Wheeler Diagrams and Near Field Exploration in Faulted Plays
Steve Tobias
Houston Geological Society Bulletin
... of a cartoon-like representation. This transform should be every bit as important to a seismic interpreter as a Fourier or Wavelet Transform...
2019
Abstract: 3D, Anisotropic Phase Shift Operators; #90171 (2013)
Robert J. Ferguson and Gary F. Margrave
Search and Discovery.com
... can be turned on and off if desired without changing the model. Access to this domain is achieved simply through the Fast Fourier transform (Foster...
2013
Abstract: 3D, Anisotropic Phase Shift Operators; #90171 (2013)
Robert J. Ferguson and Gary F. Margrave
Search and Discovery.com
... can be turned on and off if desired without changing the model. Access to this domain is achieved simply through the Fast Fourier transform (Foster...
2013
5D Interpolation Using Orthogonal Matching Pursuit (OMP) Algorithm to Recover and Reconstruct Damaged Seismic Data, a Case Study in Jb Field, North West Java Basin
Andreas Wasi Kuncoro Kaissagara, Aji Rahmat Ginanjar, Arrie Kurniawan, Dimas Pramudito
Indonesian Petroleum Association
... the data in a Fourier expansion and using data expansion coefficient, the algorithm reconstructed the data at particular spatial locations. Kirchhoff...
2017
Antialiasing 5D Interpolation; #41497 (2014)
Stephen K. Chiu
Search and Discovery.com
... transpose of x, F is a multi-dimensional forward Fourier transform, F-1 is a multi-dimensional inverse Fourier transform, and xโ is a least-squares solution...
2014
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...
2025