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The AAPG/Datapages Combined Publications Database

Showing 1,245 Results. Searched 190,731 documents.

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Color Blending on Spectral Decomposition Method for Delineating Geological Features

Garda Erlangga, Kahvi Afafa, Sudarmaji

Indonesian Petroleum Association

... = √ ……………………………………….(2) FFT (Fast Fourier Transform) Fast Fourier Transform is an implemenation to obtain DFT (Discrete Fourier Transform) more precisely...

2013

Abstract: Comparison of 3D Interpolation Methods and Validation through Post Stack Inversion: A Case Study from 3D North Amer Oil Field, Gulf of Suez, Egypt; #90254 (2016)

Mohamed Afia, Michel Schonewille, Krishna Ramani, Abdallah Ibrahim, Tarek El Melegy, Tarek Nafie, Christoph Koeninger, Gamal Khedr, Tarek Dahrog, Mostafa El Meihy

Search and Discovery.com

... Fourier transform are widely used beyond aliasing interpolators. 3DTDRI is not widely used, possibly because of its computational cost. We illustrate...

2016

Time-Domain High-Resolution Radon Transform (Geophysics Paper 4)

Michel Schonewille, Peter Aaron, Carl Notfors

Geological Society of Malaysia (GSM)

... of the method, to the left is the data in the time-offset domain, the 2nd frame shows the Fourier transform with the vertical axis being frequency...

2008

Abstract: Five Dimensional Seismic Data Interpolation; #90171 (2013)

Daniel Trad

Search and Discovery.com

... this constraint requires a multidimensional Fourier Transform Fnd. To solve for the unknown data, a cost function is defined and minimized using standard...

2013

Seismic Time-Frequency Analysis by Empirical Mode Decomposition; #41513 (2015)

Jiajun Han, Mirko van der Baan

Search and Discovery.com

... Fourier transform. Application on field data thus offers the potential of highlighting subtle geologic structures that might otherwise escape...

2015

Abstracts: Fourier Transform Ion Cyclotron Resonance Mass Spectrometry … The Analytical Tool for Heavy Oil and Bitumen Characterization; #90173 (2015)

Thomas B. P. Oldenburg, Melisa Brown, Ben Hsieh, and Steve Larter

Search and Discovery.com

...Abstracts: Fourier Transform Ion Cyclotron Resonance Mass Spectrometry … The Analytical Tool for Heavy Oil and Bitumen Characterization; #90173 (2015...

2015

Finite Difference Modeling: Part II: How to clean numeric time dispersion

Lasse Amundsen, Ørjan Pedersen, Martin Landrø

GEO ExPro Magazine

... dispersion implies that the higher frequency components of the signal propagate at the wrong speed. Here we show how the Fourier transform can be used...

2018

ABSTRACT: Anisotropic Wavefield Extrapolators by Fourier Technique

G. F. Margrave

CSPG Special Publications

...ABSTRACT: Anisotropic Wavefield Extrapolators by Fourier Technique G. F. Margrave 1998 106 106...

1998

Abstract: Detecting Stratigraphic Discontinuities using Wavelet and S-Transform Analysis of Well Log Data; #90174 (2014)

Akhilesh K. Verma, Burns A. Cheadle, William K. Mohanty, Aurobinda Routray, and Lalu Mansinha

Search and Discovery.com

...) is a hybrid form of short-time Fourier transform and wavelet transform that provides a measure of the local Fourier frequency spectrum of the time...

2014

Computer Modeling of Minnelusa Formation (Pennsylvanian-Permian) Paleotopography in Eastern Powder River Basin, Wyoming: ABSTRACT

R. Mark Maslyn

AAPG Bulletin

... mi (5 km). Double Fourier transforms are most appropriately used in modeling where such a cyclicity exists. The resulting double Fourier transform...

1982

Abstract: Gas Field Characterization Through the Use of Multi-Resolution Seismic Attributes; #90211 (2015)

Robert McGrory, Robert Pinnegar, and Robert Stewart

Search and Discovery.com

...-time Fourier transform, but with the advantage of a scalable, wavelet-like Gaussian window that provides multi-resolution analysis. The S transform's...

2015

Lateral Variability in Coals in Western North Slope, Alaska: ABSTRACT

J. S. Youtcheff, P. D. Rao, J. E. Smith

AAPG Bulletin

... and to a lesser extent by rank characterization. Changes in the coal structure and its low temperature ash were also studied by means of Fourier transform...

1985

ABSTRACT: Development of fold hinges in a quartz arenite at subgreenschist facies conditions; #90018 (2003)

Jennie Cook

Search and Discovery.com

... to differences in fold geometry. Fluid inclusions, solution geometry, and potentially the Fourier transform infrared spectroscopy (FTIR) will be used...

2003

ABSTRACT: THE VARIATION OF ORGANIC MATTER IN THE WEATHERING OF COAL GANGUE AND PROCESS SOIL FORMING

Juan-juan Li, Yuegang Tang, Jintao Ma, Xiaole Shi

The Society for Organic Petrology (TSOP)

... analysis, Fourier transform infrared spectroscopy and cross-polarization with magic angle spinning 13 C nuclear magnetic resonance (CP-MAS 13C NMR...

2006

Abstract: Time-Frequency Polarization Analysis and Filtering; #90211 (2015)

Robert Pinnegar

Search and Discovery.com

... in the time domain, or the frequency domain, by combining information from both domains to produce a TFR. The windowed Fourier transform is not the only TFR...

2015

Utilizing Variably Integrated Spectral Frequency to Extract Entire Fluvial Systems

Pongthep Thongsang, Mirza Naseer Ahmad

Indonesian Petroleum Association

.... Although it is not an absolute values as Fourier transform but it measures similarity between a mother wavelet and a seismic signal (relative frequency...

2013

Multi-Step Auto-Regressive Reconstruction of Nonuniformly Sampled, Aliased Seismic Records; #41563 (2015)

M. Naghizadeh, M. D. Sacchi

Search and Discovery.com

... composed of linear events and missing traces. First by applying the Discrete Fourier Transform (DFT) in the time direction, the data are transformed...

2015

Spatial Analysis of Basement and Cover Linears by Optical Diffraction - Methods, Results, and Interpretation

Howard J. Pincus, Thomas W. Doe

Utah Geological Association

... Fourier amplitude transform of the input image. This transform is a graph of the distribution of orientations and spatial frequencies of the elements...

1974

Abstracts: Evaluation of a New 5D Seismic Volume Reconstruction Method: Tensor Completion versus Fourier Reconstruction; #90173 (2015)

Nadia Kreimer and Mauricio D. Sacchi

Search and Discovery.com

.... The operator indicates the 4D inverse Fourier transform. The cost function (3) is minimized using Iterative Reweighted Least-squares (IRLS) following...

2015

Abstracts: Evaluation of a Fast Algorithm for the Eigen-Decomposition of Large Block Toeplitz Matrices with Application to 5D Seismic Data Interpolation; #90173 (2015)

Jianjun Gao, Vicente Oropeza, and Mauricio D. Sacchi

Search and Discovery.com

... that heavily rely on Fast Fourier Transforms and/or a fast implementation of the non-uniform Discrete Fourier Transform (Sacchi and Liu, 2004; Abma...

2015

Gabor Depth Migration using a New Adaptive Partitioning Algorithm

Yongwang Ma

Search and Discovery.com

... migration, the temporal Fourier transform is applied to the input seismic data to transform to the frequency domain. Then the spatial Fourier...

Unknown

Gabor Depth Migration using a New Adaptive Partitioning Algorithm

Yongwang Ma

Search and Discovery.com

... migration, the temporal Fourier transform is applied to the input seismic data to transform to the frequency domain. Then the spatial Fourier...

Unknown

Application of Robust Noise Reduction on a Land 3D Seismic Data

Agus Abdullah, Jesse Shaw

Indonesian Petroleum Association

... of a spatial Fourier transform: (1) − Lxc ks r ∞ ~ GBj ( s, f ) = eikr ros ∫ ω + (ros − rd )... j −∞  λ λ  r  ... exp i 2π  n − n  d...

2012

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