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The AAPG/Datapages Combined Publications Database
Showing 1,479 Results. Searched 200,619 documents.
Abstract: Estimation of Q: a Comparison of Different Computational Methods; #90187 (2014)
Peng Cheng and Gary F. Margrave
Search and Discovery.com
... functions H12 (f) and H21 (f) can be computed from h12 (t) and h21 (t) by taking Fourier transform. Following that, the power spectral ratios over...
2014
Application of Seismic Data to Lithology and Hydrocarbon Identification in East China
Qian Shao-Xin, Liu Wen-Lin
Circum Pacific Council Publications
... oil from 14 wells and covers an area of about 3 km . Frequency spectra are commonly estimated by Fourier Transform. The application of Fourier Transform...
1989
Theory and Applications of Time Series Analysis to Wireline Logs: Chapter 5
John H. Doveton
AAPG Special Volumes
... gamma-ray log from a Lower Permian Chase Group section. End_Page 106------------------------ then be generated by the Fast Fourier Transform (FFT...
1994
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...
2024
Fourier Transform Infrared Spectroscopy (FTIR) at Wellsite: Case Studies from the Barnett-Woodford, Permian Basin
Meri McCulley, Gilles Mertens, Rieko Adriaens, Bram Paredis
Unconventional Resources Technology Conference (URTEC)
...Fourier Transform Infrared Spectroscopy (FTIR) at Wellsite: Case Studies from the Barnett-Woodford, Permian Basin Meri McCulley, Gilles Mertens...
2025
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
... these previous acquisitions, automated micro-XRF spectrometer and Automated Fourier Transform Infra-Red spectroscopy (FTIR) were tested on portions...
2018
Abstract: Kirchhoff Imaging with Adaptive Greens 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...
2014
Optimized downward continuation for the one-way wave equation in TTI media
Cosmin Macesanu, Faqi Liu
International Meeting for Applied Geoscience and Energy (IMAGE)
... the (complex) exponential of the phase shift by a fraction: 1 + i∆φ /2 ei∆φ ≃ . (5) 1 − i∆φ /2 3. Inverse Fourier transform the k j terms, which become...
2022
Computer Modeling of Minnelusa (Pennsylvanian-Permian) Paleotopography in Eastern Powder River Basin, Wyoming, with a Case History: ABSTRACT
R. Mark Maslyn, F. Jay Phillips
AAPG Bulletin
... with a wavelength of approximately 3 mi (5 km). Double Fourier transforms are appropriate in modeling this kind of cyclic data. For a test township...
1984
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...
2022
Subsidence and Heat Flow in Intracontinental Basins and Passive Margins
Jean-Claude Mareschal
CSPG Special Publications
... where similar relationships can be derived between the spectra. The Fourier transform f(k) of any function f(x) is defined by the pair of equations...
1987
ABSTRACT: FTIR PARAMETERS AS MATURITY PROXIES IN KEROGEN TYPE II
Grzegorz Lis, Maria Mastalerz, Arndt Schimmelmann, Artur B. Stankiewicz
The Society for Organic Petrology (TSOP)
... for assessing thermal maturity. We propose that Fourier Transform Infra Red (FTIR) spectroscopy of kerogen can substitute for Ro, because FTIR...
2004
COMPUTER TECHNOLOGY
Brian Shaw
Journal of Sedimentary Research (SEPM)
... direct presentation of analytical results. The techniques employed ranged from sophisticated multivaria e analyses and Fourier analysis to the calculation...
1981
Fourier Grain-Shape Analysis of Antarctic Marine Core: The Relative Influence of Provenance and Glacial Activity On Grain Shape
Daniel N. Livsey, Alexander R. Simms, Warren G. Clary, Julia S. Wellner, John B. Anderson, John P. Chandler
Journal of Sedimentary Research (SEPM)
...Fourier Grain-Shape Analysis of Antarctic Marine Core: The Relative Influence of Provenance and Glacial Activity On Grain Shape Daniel N. Livsey...
2013
Structural Analysis Using Spatial Filtering in Interior Plains of South-Central Alberta
J. E. Robinson , H. A. K. Charlesworth , M. J. Ellis
AAPG Bulletin
... domain and its equivalent to the Fourier transform of its amplitude and phase frequency responses. In the case of the unit impulse response all frequencies...
1969
Quantification of Fracture Systems Using Fourier Analysis
Search and Discovery.com
N/A
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...
1975
ABSTRACT: The Deadline Of Gas Generation For Humic Coal
J. Mi, S. Zhang, J. Chen, K. He
The Society for Organic Petrology (TSOP)
... from 0.56 to 5.32% vitrinite reflectance (Ro) were investigated by Fourier Transform Infrared Spectroscopy (FTIR) and solid-state 13C Nuclear Magnetic...
2014
Joint velocity and event location inversion workflow in microseismic reservoir monitoring
Takashi Mizuno, Joel Le Calvez, Manish Lal Khaitan, Giulia Barisione, Irina-Tulia Stoia, Prakash Ranjan, Stefano Clerico, Xinyuan Li, Zheyuan Huang
International Meeting for Applied Geoscience and Energy (IMAGE)
.... The velocity model correction is decomposed into several length-scale components (short to long) using a Fourier transform. The algorithm starts to solve...
2022
ABSTRACT: Influence of maceral reactivity on hydrocarbon generation of coal and shale from Makum coal basin, India
Atul K. Varma, Sanki Biswas, Balram Tiwari
The Society for Organic Petrology (TSOP)
... + 24.33; Fig. 1c). Fourier Transform Infrared Spectrometry (FTIR) spectrum of coal samples shows the presence of long aliphatic chains (alicyclic CH3...
2018
Investigation of DMO Algorithms during Test-Line Processing: Some Recommendations
Ng Tong San, Mohd. Hashim Abas, Leong Lap Sau
Geological Society of Malaysia (GSM)
... in, and perhaps more "correct" velocity pick. DMO algorithms available sometime back in this region are essentially Fourier transform methods, usually...
1996
Abstract: Use of petrographic investigations in prediction of combustion behaviour of inertinite rich coal and char and flyash formation
A. Kumar Varma, M. Kumar, V. Kumar Saxena, A. Sarkar
The Society for Organic Petrology (TSOP)
... of highly porous, rounded and partially reacted fly ash particles. The FTIR (Fourier transform infra red) studies of unburnt coal indicate presence...
2008
ABSTRACT: Peculiar chemical properties of some Late Permian Chinese coals
Shaoqing Wang, Yuegang Tang
The Society for Organic Petrology (TSOP)
... structural characterization of barkinite, comparing to vitrinite, was studied by Fourier transform infrared spectroscopy (FT-IR) and carbon-13 nuclear magnetic...
2012
EXTENDED ABSTRACT: Raman Spectroscopy of Reflectance Suppression in Artificial Source Rock
Margaret Sanders, Aaron Jubb, Paul Hackley, Ken Peters, Andrew Pomerantz
The Society for Organic Petrology (TSOP)
... aromatization as proposed by Peters et al. (2018). Micro-Fourier transform infrared spectroscopy (micro-FTIR) analysis is currently in progress. We predict...
2021
Abstract: ATR-FTIR Characterization of Shales from Kubang Pasu Formation, Malaysia
Zaky Ahmad Riyadi, Eswaran Padmanabhan, Ibad Mahmoodi, Yang Wang Chuan, Teivardashni Gunasergaran
Geological Society of Malaysia (GSM)
... were collected from the basal unit of Kubang Pasu formation. The Fourier transform infrared spectroscopy (FTIR) and Ultraviolet-Visible Spectroscopy (UV...
2017