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The AAPG/Datapages Combined Publications Database

Showing 1,342 Results. Searched 195,596 documents.

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Estimation of Seismic Attenuation (Q): More Insight from Zero-Offset VSP

Mohammad Risyad

Indonesian Petroleum Association

... stations and extract time series data of their respective depths, time-to-frequency conversion is performed using Fast Fourier Transform (FFT...

2018

Multi-Resolution Grid Connectivity-Based Transform for Efficient History Matching of Unconventional Reservoirs

Hyunmin Kim, Feyi Olalotiti-Lawal, Akhil Datta-Gupta

Unconventional Resources Technology Conference (URTEC)

... and Yip 2014). They used the discrete cosine transform (DCT) which is a type of Fourier transform that reconstructs a discrete signal as the sum of cosine...

2019

Automated detection of ferromagnetic pipelines from magnetic total-field anomaly data using convolutional neural networks

Brett Bernstein, Yaoguo Li, Richard Hammack

International Meeting for Applied Geoscience and Energy (IMAGE)

... properties of the Hilbert transform (Nabighian, 1984), q FFT 2 2 ˜ Tz $ wx + wy DT , (2) ˜ where wx and wy are the x and y wavenumbers and DT is the Fourier...

2023

Hybrid streamer/sparse OBN imaging offshore Norway

Chris Walker, Zhengzheng Zhou, Xi Li

International Meeting for Applied Geoscience and Energy (IMAGE)

... compressive sensing-based wavefield reconstruction (CSR.) Node gathers before and after 1D (time) wavelet and 2D (XY) curvelet transform domain L1...

2023

Interferometry Application to Interpolate Missing 2D Seismic Data in Shot Gathers

Lily Suherlina, M.Yusup Nur Khakim, Hilman Mardiyan, Roy Baroes

Indonesian Petroleum Association

... and extrapolation of OBS data. In the past, some authors have developed some methods for doing interpolation, for example, the Fourier method (Liu...

2016

Abstract: On Choosing Differential Operators; #90171 (2013)

John C. Bancroft

Search and Discovery.com

... 15 20 25 N Figure 2 Inverse Fourier transform of the derivative using the tapered frequency, Nfft = 1024, taper starting at 80% of the Nyquist...

2013

AAPG Eastern Section 43rd Annual Meeting

Search and Discovery.com

N/A

Abstract: On Choosing Differential Operators; #90171 (2013)

John C. Bancroft

Search and Discovery.com

... 15 20 25 N Figure 2 Inverse Fourier transform of the derivative using the tapered frequency, Nfft = 1024, taper starting at 80% of the Nyquist...

2013

Adaptive Eigenstructure Classification and Stochastic Decorrelation Filters for Coherent Interference Suppression in the Acoustic Zoom Method, #41503 (2014).

J. Guigne, S. Azad, C. Clements, A. Gogacz, W. Hunt, A. Pant, J. Stacey

Search and Discovery.com

... eigen-structure methods. The resulting algorithm is analogous to the Hough transform (in image processing) extended to patterns for geophysical re...

2014

Spherical-Wave Computational AVO Modelling in Elastic and Anelastic Isotropic Two-Layer Media; #41564 (2015)

Arnim B. Haase, Charles P. Ursenbach

Search and Discovery.com

.... They are repeated for all frequency points desired in the output bandwidth, and then the time domain response is found by inverse Fourier transform...

2015

Enhancing Spectral Decomposition to Delineates Subtle Channels … A Case Study from Offshore Nile Delta; #42180 (2018)

Islam A. Mohamed, Ahmed S. Abdel-Rahman, Amr E. Khalafalah, Abdul-Rahman Ali Mohamed

Search and Discovery.com

..., and/or hydrocarbons. • Two methods were tested: Fast Fourier Transform (FFT) and Continuous Wavelet Transform (CWT). • The frequency analysis over Sequoia field...

2018

ABSTRACT: Composition and structure of sulfur compounds in extracts of Chinese high organic sulfur coals

Yuegang Tang, Yewei Sun, Xiaoshuai Wang, Quan Shi, Hongxing Ni, Lulu Yan, Xiaolong Li, Xueping Pang

The Society for Organic Petrology (TSOP)

... of Chinese high organic sulfur coals at different ranks were analyzed through positive-ion electrospray ionization Fourier transform ion cyclotron...

2018

ABSTRACT: Importance of the Reacting Medium in Artificial Maturation of a Coal by Confined Pyrolysis

L. Mansuy and P. Landais

The Society for Organic Petrology (TSOP)

...-gas chromatography-mass spectrometry and Fourier transform infrared microspectroscopy. Results and discussion The results showed that the modification...

1996

Clay Mineralogy of Shale Gas Reservoirs through Integrating Infrared Spectroscopy and X-Ray Diffraction

Hanieh Jafary Dargahi, Reza Rezaee, Bobby Pejcic

Unconventional Resources Technology Conference (URTEC)

... of Permo-Triassic shale reservoir samples from the Perth Basin using Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD...

2013

A Journey to the Centre of the Earth

Sven Philit, Sebastien Lacaze, Benjamin Durot, Jake Marson

GEO ExPro Magazine

... decomposition in Short Time Fourier Transform and three target-representative frequencies; the RGB blending of the three frequencies mapped on a dense...

2020

ABSTRACT: SPECTROSCOPIC AND MICROSCOPIC CHARACTERIZATION OF CARBONACEOUS MATERIAL IN ARCHAEAN CHERTS, PILBARA CRATON, WESTERN AUSTRALIA

Craig P. Marshall, Abigail C. Allwood, Malcolm R. Walter, Martin J. Van Kranendonk, Roger E. Summons

The Society for Organic Petrology (TSOP)

.... Characterization of the carbonaceous material was undertaken using laser Raman spectroscopy, Fourier transform infrared (FTIR) spectroscopy, solid-state 13C...

2004

ABSTRACT: Preliminary results from a new approach to test the role of water in petroleum generation

Paul Hackley, Patrick Smith, Palma Jarboe, Aaron Jubb, Justin Birdwell, Javin Hatcherian, Brett Valentine

The Society for Organic Petrology (TSOP)

... and reflectance), spectroscopic (micro-Raman, micro-Fourier transform and electron energy loss) and transmission electron microscopy to quantify differences...

2017

EXTENDED ABSTRACT: Ombrotrophic peatlands as atmospheric microplastic archives

O. Hagelskjær, G. Le Roux, J. Sonke

The Society for Organic Petrology (TSOP)

... particles. Fourier-transform infrared (FTIR) and Raman spectroscopy are recognized as two of the best non-destructive methods of polymer identification...

2021

Abstract: Automated Scanning of Fine-scale Geological, Petrophysical and Geomechanical Rock Properties and Its Application in Reservoir Characterization

Ramil S. Ahmadov, Greg N. Boitnott

Houston Geological Society Bulletin

... information, a geomechanical probe named the Impulse Hammer, and an FTIR (Fourier Transform Infrared Spectroscopy) probe to provide mineralogical...

2019

Textural and Diagenetic Controlson Sandstone Permeability

Christopher M. Prince

GCAGS Transactions

... a better relationship with permeability. End_Page 43------------------------ 2-D Fourier Analysis A 2-D Fourier transform is used to decompose images...

1999

Textural and morphological properties of aplitic kaolin from Kinta Valley

Khong Ling Han, Hareyani Zabidi, Kamar Shah Ariffin

Geological Society of Malaysia (GSM)

... Minerals, 34(3), 239-249. Ekosse, G., 2005. Fourier transform infrared spectrophotometry and X-ray powder diffractometry as complementary Warta Geologi...

2018

Variation in textural properties of aplitic kaolin from Kinta Valley

Khong Ling Han, Hareyani Zabidi, Kamar Shah Ariffin

Geological Society of Malaysia (GSM)

... by various techniques which X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and field emission scanning electron microscope (FESEM...

2020

Abstract: Stabilizing Seismic Absorption Compensation; #90171 (2013)

Changjun Zhang

Search and Discovery.com

... resolution discrete Fourier transform: IEEE Transactions on Signal Processing, 46, 31–38. Tarantola, A., 1987, Inverse problem theory. Methods for data...

2013

Abstracts: Footprint Removal with Co-ordinate Rotation; #90173 (2015)

Mark Ng and Ye Zheng

Search and Discovery.com

... of the fact that when a 2D spatial Fourier transform is applied to a time slice section with a footprint pattern that is aligned parallel to any binning co...

2015

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