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The AAPG/Datapages Combined Publications Database

Showing 1,340 Results. Searched 195,502 documents.

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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

Seismic frequency control on carbonate seismic stratigraphy: A case study of the Kingdom Abo sequence, west Texas

Hongliu Zeng, Charles Kerans

AAPG Bulletin

... occur if the dominant frequency of the seismic data is not matched to the unit thicknesses that need to be resolved. Bracewell, R. N., 1999, The Fourier...

2003

Abstract: On Sampling Optimization Based on Mutual Coherency Criterion; #90224 (2015)

Mafijul Islam Bhuiyan

Search and Discovery.com

...). Our main goal is to reduce the mutual coherency between sampling scheme and sparsifying transform. However, the design of optimal receiver pattern...

2015

Early Miocene Cyclostratigraphy and Sea-Level Changes from the Pearl River Mouth Basin, South China Sea; #50463 (2011)

Shi-Feng Tian

Search and Discovery.com

... in a mixed carbonate and siliciclastic setting. A spectral analysis will be carried out in these wells using the Fourier transform algorithm approach...

2011

Deterministic and Statistical Wavelet Processing

Lee Lu

Southeast Asia Petroleum Exploration Society (SEAPEX)

... do is to find the effective wavelet, either by dividing the Fourier transform of x by the Fourier transform of r in frequency domain or by equivalent...

1980

The Effect of Hydrofluoric Acid on Quartz Shape--Fourier Grain Shape Analysis: METHOD PAPER

Douglas J. Schultz

Journal of Sedimentary Research (SEPM)

...The Effect of Hydrofluoric Acid on Quartz Shape--Fourier Grain Shape Analysis: METHOD PAPER Douglas J. Schultz 1980 Vol. 50 No. 2. (June), Fourier...

1980

Molecular structure characterization of kerogen in contact metamorphic shales: Insights into the effect of graphitization on organic matter pores

Yuguang Hou, Rui Yu, Junjie Li, Zhenhong Chen, Cheng Wang, Xianglin Chen, Rui Yang, and Sheng He

AAPG Bulletin

... Raman microprobe, transmission electron microscopy, and Fourier transform infrared spectroscopy techniques. The OM pore structures of shale samples...

2024

Seismic Wave Attenuation in Gas Hydrate-Bearing Sediments from Vertical Seismic Profiling Data, Mallik, Northwest Territories, Canada

Gilles Bellefleur

Search and Discovery.com

... at a specific receiver using P ( z o , Z )* ( z o ) exp iZ'W ( z ,Z ) *( z o )  '*( z ) ˆ P( z, Z ) ˆ Where P ( z , Z ) is the Fourier transform of the VSP...

Unknown

Seismic Wave Attenuation in Gas Hydrate-Bearing Sediments from Vertical Seismic Profiling Data, Mallik, Northwest Territories, Canada

Gilles Bellefleur

Search and Discovery.com

... at a specific receiver using P ( z o , Z )* ( z o ) exp iZ'W ( z ,Z ) *( z o )  '*( z ) ˆ P( z, Z ) ˆ Where P ( z , Z ) is the Fourier transform of the VSP...

Unknown

AVO Modeling of Monochromatic Spherical Waves: Comparison to Band-Limited Waves; #41567 (2015)

Charles Ursenbach, Arnim Haase

Search and Discovery.com

... the reflection coefficient for a band-limited wavelet via an inverse Fourier transform, as has been carried out by Haase (2004). We have previously...

2015

The deblending processing of multi-well 3D DAS-VSP data in the Middle East

Fei Li, Gang Yu, Haibo Liu, Jiawen Song, Yanbin Zhang, Yuanzhong Chen, Tiankui Yin, Jianxin Han, Qingfeng Li

International Meeting for Applied Geoscience and Energy (IMAGE)

... sources data; Abba et al. (2008) obtained highquality separation results using POCS algorithm in Fourier transform domain; Lin et al. (2009) proposed...

2023

Detection of Sedimentary Cyclicity and Stratigraphic Completeness by Wavelet Analysis: An Application to Late Albian Cyclostratigraphy of the Western Canada Sedimentary Basin

Andreas Prokoph , Frederik P. Agterberg

Journal of Sedimentary Research (SEPM)

... at high frequencies and wide windows at low frequencies (Fig. 2). In contrast, the Fourier transform uses a single analysis window for all frequencies...

1999

Abstract: Investigating the Low Frequency Content of Seismic Data with Impedance Inversion; #90187 (2014)

Heather J. E. Lloyd and Gary F. Margrave

Search and Discovery.com

... the low-frequency cut-off, , and is selected by the user.  Inverse Fourier Transform the result in (7).  Add the linear trend that was removed in (1...

2014

A Comparison of Fourier and Fractal Techniques in the Analysis of Closed Forms

Stephen K. Kennedy, Wei-Hsiung Lin

Journal of Sedimentary Research (SEPM)

...A Comparison of Fourier and Fractal Techniques in the Analysis of Closed Forms Stephen K. Kennedy, Wei-Hsiung Lin 1992 Vol. 62 No. 5. (September...

1992

Compositional Fractionation of Petroleum Fluids During Migration and Production: A Bakken Case Study with Fourier Transform Ion Cyclotron Resonance (FT-ICR) Mass Spectrometry

Yishu Song, Eric Michael, Kristie McLin, Nicolaj Mahlstedt, Brian Horsfield, Stefanie Potz, Kai Mangelsdorf

Unconventional Resources Technology Conference (URTEC)

...Compositional Fractionation of Petroleum Fluids During Migration and Production: A Bakken Case Study with Fourier Transform Ion Cyclotron Resonance...

2022

Spectral Decomposition: Extending the Limits of Seismic Resolution for Reservoir Delineation

Sunu H. Praptono, Bambang Murti, Dylan Mair

Indonesian Petroleum Association

... in the data. Methodology The spectral decomposition transforms the seismic data into the frequency domain via a DFT (Discrete Fourier Transform) or via a MEM...

2003

Abstract: Full-Waveform Inversion of Field Data in the Foothills: Results and Challenges with Long-Offset Seismic; #90172 (2014)

Andrew J. Brenders, R. Gerhard Pratt, Sylvestre Charles

Search and Discovery.com

..., where  is the angular frequency and  is a decay constant. The Fourier transform may then be replaced by         (1) 2  AAPG...

2014

Abstract: A Faster, More Accurate Gaussian Simulation; #90172 (2014)

Colin Daly, Sandra Quental, Darcy Novak

Search and Discovery.com

... to about 36 minutes for the old GSLIB based algorithm for identical results. The unconditional simulation term uses a Fast Fourier Transform based...

2014

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