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The AAPG/Datapages Combined Publications Database
Showing 1,338 Results. Searched 195,387 documents.
Abstract: Investigation of DMO Algorithms during Test-Line Processing: Some Recommendations (Paper 23)
Ng Tong San, Mohd. Hashim Abas, Leong Lap Sau
Geological Society of Malaysia (GSM)
... "correct" velocity pick. DMO algorithms available sometime back in this region are essentially Fourier transform methods, usually with some logarithmic...
1995
Optical Methods and Equipment for Processing Geophysical Data: ABSTRACT
Arthur L. Ingalls
AAPG Bulletin
... is a 2-dimensional filtering equipment in which 2 Fourier transforms are performed sequentially on the in-put transparency. The first transform produces...
1965
Investigation of the Mineral Composition of Shales by Far Infrared Spectroscopy
Search and Discovery.com
N/A
Integrated Basinal-Scale Study on Potential Shale Plays in Abakaliki Fold Belt and Calabar Flank, Nigeria
Search and Discovery.com
N/A
Abstract: Azimuthal Fourier Coefficients: A Simple Method to Estimate Fracture Parameters; #90174 (2014)
Jon Downton and Benjamin Roure
Search and Discovery.com
... in azimuth, the properties of the Fourier transform allow these problems to be treated separately. If we calculate a Fourier transform of the AVAz PP...
2014
ABSTRACT: APPLICATION OF ATTENUATED TOTAL REFLECTANCE MICROFOURIER TRANSFORM INFRARED (ATR-FTIR) ANALYSIS TO THE STUDY OF COAL MACERALS AND COAL MATURATION PROCESSES
Zhongsheng Li, Peter M. Fredericks, Llew Rintoul, Colin R. Ward
The Society for Organic Petrology (TSOP)
... 4001, Australia INTRODUCTION Fourier transform infrared (FTIR) spectroscopy has been used in the laboratory for some decades to investigate substances...
2004
Abstracts: A New f-p Domain Weighting Function in Minimum Weighted Norm Interpolation of Seismic Data; #90173 (2015)
Zhengsheng Yao, Mike Galbraith, and Randy Kolesar
Search and Discovery.com
... to the other by some transform – e.g. a double Fourier Transform). In this paper, we will describe the f-p domain approach and show its advantages over...
2015
Abstract: Time-Frequency Representation of Microseismic Signals using the Synchrosqueezing Transform; #90187 (2014)
Roberto H. Herrera, Jean-Baptiste Tary, and Mirko van der Baan
Search and Discovery.com
... experiments. The popular methods of Short-Time Fourier Transform (STFT) and wavelet analysis have limitations in representing close frequencies...
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
Spectral Decomposition's Analytical Value, by Satinder Chopra and Kurt J. Marfurt; #41260 (2013).
Search and Discovery.com
2013
Spectral Decomposition Methods: Applicability and Limitations, by Satinder Chopra and Kurt J. Marfurt; #41323 (2014).
Search and Discovery.com
2014
Abstract: Making FX Interpolation More Robust by Spectrum-guided Reconstruction; #90171 (2013)
Mostafa Naghizadeh and Mauricio Sacchi
Search and Discovery.com
... interpolation in the F-X domain: Geophysics, 56, 785–796. Xu, S. and D. Pham, 2004, Seismic Data Regularization with Anti-Leakage Fourier Transform...
2013
Abstract: The Phase Shift Time Stepping Equation and the Marmousi Data Set; #90171 (2013)
Ben D. Wards, Gary F. Margrave, and Michael P. Lamoureux
Search and Discovery.com
... Fourier transform which is exact for constant velocity medium. Introduction Reverse-time migration (Baysal et. al., 1983, McMechan, 1983; Whitmore...
2013
Abstract: Land Seismic Noise Suppression: Tough Challenge, Intelligent Implementation, by Khalid Al-Rufaii and Weihong Zhu; #90077 (2008)
Search and Discovery.com
2008
Migration Amplitude Recovery using Curvelets
Peyman P. Moghaddam
Search and Discovery.com
... the action of Fourier integral operators. They stated that under some condition a curvelet maps to another curvelet under the action of Fourier Integral...
Unknown
ABSTRACT: Examples of Enhanced Spectral Processing in Direct Hydrocarbon Detection; #90007 (2002)
Sun, Shengjie, John P. Castagna, Robert W. Siegfried
Search and Discovery.com
... transform may even provide misleading frequency features. Although the short window Fourier transform has been employed to provide the localization...
Unknown
Migration Amplitude Recovery using Curvelets
Peyman P. Moghaddam
Search and Discovery.com
... the action of Fourier integral operators. They stated that under some condition a curvelet maps to another curvelet under the action of Fourier Integral...
Unknown
REFLECTANCE RETARDATION (SUPPRESSION) AND SOURCE ROCK PROPERTIES RELATED TO HYDROGEN-ENRICHED VITRINITE IN MIDDLE JURASSIC COALS, DANISH NORTH SEA
H. I. Petersen and P. Rosenberg
Journal of Petroleum Geology
.... Vitrain (assumed to be pure vitrinite) was hand-picked from eight samples and characterised by means of element analysis, Fourier Transform infrared...
1998
ABSTRACT: Study on FTIR of high-organic-sulfur coal and the structure of sulfur-containing compounds of its extracts
Cong Chen, Yuegang Tang, Xiaolong Li, Yewei Sun
The Society for Organic Petrology (TSOP)
... and their extracts were studied using Fourier Transform Infrared Spectroscopy (FTIR) and Gas Chromatography-mass Spectrometer (GC-MS) to explore the evolution...
2018
ABSTRACT: The chemical structure evolution during coal pyrolysis studied by FTIR and Py-GC
Wu Li, Yan-ming Zhu, Yang Wang
The Society for Organic Petrology (TSOP)
... The molecular composition of organic matter formed during pyrolysis is complex. The chemical structure evolution can be simulated using Fourier transform...
2019
ABSTRACT: THE APPLICATION OF FREQUENCY SPECTRAL ANALYSIS OF LOGGING CURVES ON SEDIMENTARY CYCLE STUDIES IN COAL-BEARING STRATA
Fengjie Li, Duoyun Wang
The Society for Organic Petrology (TSOP)
... cycles caused by climate changes. Key words: Logging curves; Milankovitch cycles; Fast fourier transform; Ordos basin; Yan’an Formation 114...
2006
Abstract: Infrared spectrum of an individual fossil pollen grain measured as an organic maturation index
T. Aizawa, T. Ohbuchi, Y. Ujiié
The Society for Organic Petrology (TSOP)
... Infrared spectra for individual fossil pollen grains were measured by means of Fourier transform infrared spectroscopy with infrared microscope (micro...
2008
ABSTRACT: Structural characteristics and molecular representations of bark liptobiolite of Permian from China
Ya’nan Guo, Yuegang Tang
The Society for Organic Petrology (TSOP)
... spectroscopy (NMR), high-resolution transmission electron microscopy (HRTEM) and Fourier transform infrared (FT-IR) spectroscopy were employed to analyze...
2012
ABSTRACT: Infrared Microspectroscopy: An Efficient Tool for Micro-Scale Characterization of Organic Matter
P. Landais and A. Rochdi
The Society for Organic Petrology (TSOP)
... analysis. Fourier transform infrared (FTIR) spectroscopy is a widely used technique in organic geochemistry which facilitates the functional analysis...
1990
Abstract: DMO and NMO as Applied in Seismic Data Processing
Jiunnyih Chen
Geological Society of Malaysia (GSM)
... by Fourier transform. offset continuation, single channel DMO ... etc. and the improvements of these techniques are widely recognized. But every technique...
1988