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The AAPG/Datapages Combined Publications Database

Showing 1,245 Results. Searched 190,729 documents.

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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

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

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

Examples of Optical Analysis and Filtering of Seismic Record Sections: ABSTRACT

J. A. Long

AAPG Bulletin

... to produce a diffraction pattern which is the two-dimensional Fourier transform of the section itself. By using suitable lenses, the diffraction...

1965

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