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The AAPG/Datapages Combined Publications Database

Showing 1,537 Results. Searched 200,293 documents.

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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

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

Fracture Analysis at St

Search and Discovery.com

N/A

Abstract: Advanced Noise Attenuation Techniques in Seismic Data Processing; #90319 (2018)

Ferhan Ahmed, Constantinos Tsingas, Mohammed AlMubarak

Search and Discovery.com

... and noise decomposition from seismic data is properly represented in a transform domain where the signal appears sparse. Classic transforms...

2018

Abstracts: Revisiting Homomorphic Wavelet Estimation and Phase Unwrapping; #90173 (2015)

Roberto H. Herrera and Mirko van der Baan

Search and Discovery.com

... ( f ) , S( f ) (2) where S ( f ) , W ( f ) and Ν ( f ) are the Fourier transforms of s (t ) , w(t ) and η (n) respectively. A signal can...

2015

Abstract: Properties of Gabor Operators for Seismic Imaging; #90171 (2013)

Michael P. Lamoureux and Gary F. Margrave

Search and Discovery.com

... multipliers used in seismic imaging. Theory of Gabor transforms and multipliers The Gabor transform of a signal is given as a localized Fourier transform...

2013

Fast viscoacoustic forward modeling method based on U-net Fourier neural operator

Wenbin Tian, Yang Liu

International Meeting for Applied Geoscience and Energy (IMAGE)

...; Kjartansson, 1979). Nevertheless, the solution of this fractional visco-acoustic equation requires multiple Fourier transforms due to the involvement...

2023

Theory and Applications of Time Series Analysis to Wireline Logs: Chapter 5

John H. Doveton

AAPG Special Volumes

... signal and high-frequency tool effects. In a comparison of the Fourier transforms of main and repeat logging runs, they showed that they could...

1994

Abstract: Efficency and Accuracy Enhancement for One-way Wave Equation Migration Through Improved Mapping Function in the Time-shift Imaging Condition; #90171 (2013)

Mark Ng

Search and Discovery.com

... such coarse wavefield extrapolation depth steps are employed. Specifically, I incorporate a simple split-step Fourier statics correction term...

2013

Optical Data Processing of Multispectral Photographs of Sedimentary Structures

Howard J. Pincus , Syed A. Ali

Journal of Sedimentary Research (SEPM)

...-dimensional Fourier transforms (diffraction patterns) of photographs of the same specimen illuminated in five different ways provide a means for comparing...

1968

Abstracts: Interpolation of Nonstationary Seismic Records using a Fast Generalized Fourier Transform; #90173 (2015)

Mostafa Naghizadeh and Kristopher A. Innanen

Search and Discovery.com

.... In the frequency domain, the signal is dyadically segmented (dashed boxes), and within each segment inverse Fourier transforms are applied to the data...

2015

Abstracts: Padé Approximation for Analyzing Multiple Reflections; #90173 (2015)

Dali Zhang, Michael P. Lamoureux, and Gary F. Margrave

Search and Discovery.com

... a derivation of reflection and transmission coefficients in layered media which are related to infinite impulse response (IIR) filters as a rational...

2015

Diagnostic Applications of Borehole Hydraulic Signal Processing

Connor J. Clark, Jennifer L. Miskimins, Dana L. Gallegos

Unconventional Resources Technology Conference (URTEC)

..., accurately, and cost-effectively measured. Hydraulic impulse signals are interpreted in this work by applying the Fourier transform method to pressure...

2018

Abstract: A Tour of High Resolution Transforms; #90171 (2013)

Mauricio D. Sacchi

Search and Discovery.com

...Abstract: A Tour of High Resolution Transforms; #90171 (2013) Mauricio D. Sacchi A Tour of High Resolution Transforms Mauricio D. Sacchi* Signal...

2013

Antialiasing 5D Interpolation; #41497 (2014)

Stephen K. Chiu

Search and Discovery.com

... 1 ConocoPhillips, Houston, TX, USA ([email protected]) Abstract Fourier-based minimum weighted norm interpolation (MWNI) has been...

2014

A ground roll attenuation method based on CAResU-net with adaptively frequency-induced loss

Siyu Sun, Guosong Tang, Wei Bao, Guofa Li

International Meeting for Applied Geoscience and Energy (IMAGE)

... propose a hybrid loss function by integrating the MSE with an adaptively frequency-induced loss. By leveraging Fourier transform principles...

2024

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

... bidiagonalization with fast block Toeplitz matrix-times-vector multiplications via 4D Fast Fourier Transforms. The presented algorithm leads to significant...

2015

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

Enso and Sunspot Cycles in Varved Eocene Oil Shales from Image Analysis

Maurizio Ripepe , Lillian T. Roberts , Alfred G. Fischer

Journal of Sedimentary Research (SEPM)

..., but in the search for 4-100 year periodicities this is of no account. Like Crowley et al. (1986), we produced Fourier analyses (by fast Fourier transforms...

1991

The Sample Support Problem  for Permeability Assessment  in Sandstone Reservoirs

Y. Anguy, R. Erlich, C. M. Prince, V. L. Riggert, and D. Bernard

AAPG Special Volumes

... sample size can be determined by measuring the scales of structural complexity using Fourier transforms of the image of the porous microstructure...

1994

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