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The AAPG/Datapages Combined Publications Database
Showing 1,537 Results. Searched 200,293 documents.
Abstract: A Field Experiment Recording Low Seismic Frequencies; #90174 (2014)
G. F. Margrave, M. B. Bertram, K. L. Bertram, K. W. Hall, K. A. H. Innanen, D. C. Lawton, L. E. Mewhort, and T. M. Phillips
Search and Discovery.com
.... Such a correction filter can be designed as the inverse of the geophone's impulse response. Bertram and Margrave (2011) showed that the instrument response...
2014
Abstract: Inversion Approach to Calculate Instantaneous Frequency; #90174 (2014)
Jiajun Han and Mirko van der Baan
Search and Discovery.com
... the relationship between instantaneous frequency and Fourier frequency, and pointed out instantaneous frequency is identical to Fourier mean...
2014
Automatic well-log baseline correction via deep learning for rapid screening of potential CO2 storage sites
Misael M. Morales, Carlos Torres-VerdΓn, Michael Pyrcz, Murray Christie, Vladimir Rabinovich
International Meeting for Applied Geoscience and Energy (IMAGE)
... and π is the unit step function. The symmetric infinite impulse response (IIR) filter is written as π (6) ππΏ= , (1 β π§β π₯)(1 β π§π₯) where...
2024
Abstract: Azimuthal Fourier Coefficients: A Simple Method to Estimate Fracture Parameters; #90174 (2014)
Jon Downton and Benjamin Roure
Search and Discovery.com
..., Fourier transforms and some of their properties are reviewed. The Shaw and Sen (2006) linearized Zoeppritz azimuthal reflectivity, parameterized in terms...
2014
Abstract: 5D Interpolation of Seismic Data with Combination of MWNI and POCs Algorithm; #90187 (2014)
Jianhua Pan, Gerry Schlosser, Elvis Floreani, and Robert Tilson
Search and Discovery.com
... only after the last iteration. Each iteration in a 5D problem thus consists of 4D Fourier transforms in space for each frequency slice. The original...
2014
Abstracts: Gabor Multipliers for Seismic Modeling and Wavefield Propagators; #90173 (2015)
Michael P. Lamoureux, Gary F. Margrave, and Peter C. Gibson
Search and Discovery.com
... on localized Fourier transforms and generalized frames, allow the development of effective numerical methods for modeling nonstationary processes...
2015
Finite-difference wavefield propagation using superstepping
T. Nemeth, K. Nihei, A. Loddoch, A. Sekar, K. Bube, J. Washbourne, L. Decker, S Kaplan, Ch. Wu, A. Shabelansky, O. Cristea, Z. Yin
International Meeting for Applied Geoscience and Energy (IMAGE)
.... These precomputed Greenβs functions become impulse response filters at these locations. Then we apply these filters with the actual wavefields to advance...
2024
Seismic applications of the Radon transform and a new second-order traveltime local transform
Ehsan Soleymani, Mauricio Sacchi
International Meeting for Applied Geoscience and Energy (IMAGE)
... Discrete Fourier Transforms executed in the implicit form via Fast Fourier Transforms. The problem now is reduced to estimating m by minimizing the cost...
2024
Identifying Spikes in Sonic Slowness and in Resistivity in the Tuscaloosa Marine Shale Using Continuous Wavelet Transform
Carol Wicks, Samiha Naseem
GCAGS Journal
... highlights the usefulness of wavelet transforms as a means to discern changes in geophysical well logs over short depth intervals. In addition...
2017
Abstract: Rank-Reduction-Based Trace Interpolation; #90172 (2014)
Stewart Trickett, Lynn Burroughs, Andrew Milton, Larry Walton, Rob Dack
Search and Discovery.com
... midpoint Offset Azimuth Otherwise one gets poor cancelation of overlapping migration impulse responses, resulting in migration artifacts (Gardner...
2014
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
ABSTRACT: Examples of Enhanced Spectral Processing in Direct Hydrocarbon Detection; #90007 (2002)
Sun, Shengjie, John P. Castagna, Robert W. Siegfried
Search and Discovery.com
... representation after the Fourier transforms is an average representation of the frequency content change through all times. It can't reflect...
Unknown
Simultaneous source acquisition, accuracy, and deblending
Ray Abma
International Meeting for Applied Geoscience and Energy (IMAGE)
... is the deblended data. An important requirement for deblending is that the data is sparse in some transformation. Generally, 2D and 3D Fourier transforms...
2024
Seismic Estimation of Point-Bar Sands Using Simple Modeling Procedures
Robert Dennison
Indonesian Petroleum Association
.... The wavelet was estimated from the seismic trace and well logs using Fourier Transforms of the time domain acoustic impedance, and the seismic trace...
1984
Geologically Driven Joint Inversion of Gravity, Seismic and Well Data: A Step Forward in Understanding of Geological Structure and Reducing E&P Risks
Search and Discovery.com
N/A
Geologically Driven Joint Inversion of Gravity, Seismic and Well Data: A Step Forward in Understanding of Geological Structure and Reducing E&P Risks; #70282 (2017)
Oleksandr Petrovskyy, Tetyana Fedchenko
Search and Discovery.com
... techniques. Thus filtration, regional-residual separation, analytical upward-downward continuation, Fourier and wavelet transforms are still used...
2017
New technologies for seismic resolution enhancement and bandwidth expansion: Applications in SE Asian Basin
Yasir Bashir, Abdul Halim Abdul Latiff, Muhammad Sajid
Geological Society of Malaysia (GSM)
... that lacks knowledge of the direction of the recorded impulse. Conversely, geophones are employed to measure velocities that can detect both up and down...
2024
Automated velocity model building using Fourier neural operators
Guanghui Huang, Sean Crawley, Ramzi Djebbi, Jaime Ramos-Martinez, Nizar Chemingui
International Meeting for Applied Geoscience and Energy (IMAGE)
...Automated velocity model building using Fourier neural operators Guanghui Huang, Sean Crawley, Ramzi Djebbi, Jaime Ramos-Martinez, Nizar Chemingui...
2023
Abstract: Least Squares Pre-Stack Time Migration for Imaging and Reconstruction of Converted Waves; #90224 (2015)
Aaron Stanton
Search and Discovery.com
... a synthetic data example in which the input data have been regularly decimated. We ο¬nd several advantages to our approach when compared with Fourier...
2015
Enhancing the Quality of Seismic Impedance Data; #41961 (2016)
Satinder Chopra, Ritesh Kumar Sharma, Rebecca Daniels, Brian Schulte, Jim Pllishy, Tammy Chow
Search and Discovery.com
... is commonly transformed is the frequencywavenumber or the f-k domain by using Fourier transforms. The seismic signal and the coherent noise that appear...
2016
Fold Geometry Within Part of Michigan Basin, Michigan
E. H. Timothy Whitten , Walter A. Beckman, Jr.
AAPG Bulletin
...). A. Location of 360 wells penetrating unit. B. Complete third harmonic double Fourier series trend surface (fundamental wave lengths = 45 mi) computed...
1969
Inference of Induced Fracture Geometries Using Fiber-Optic Distributed Strain Sensing in Hydraulic Fracture Test Site 2
Stephen Bourne, Kees Hindriks, Alexei A. Savitski, Gustavo A. Ugueto, Magdalena Wojtaszek
Unconventional Resources Technology Conference (URTEC)
...l is stationary, such that β(π± π , π±) = β(π± π β π±), which permits obtaining solutions as a convolution using Fast Fourier Transforms, Ξ΅i...
2021
Empirical Mode Decomposition (EMD) of Turner Valley Airborne Gravity Data in the Foothills of Alberta, Canada; #41581 (2015)
Hassan Hassan
Search and Discovery.com
... (Huang et al., 1998). The EMD method is different from the Fourier and wavelet transforms because it handles nonlinear and non-stationary signals...
2015
ABSTRACT: OBJECT BASED SIMULATIONS IN FLUVIAL ENVIRONMENT AT THE RESERVOIR SCALE AND AT A LOCAL SCALE; #90013 (2003)
MARTA BENITO GARCIA-MORALES, HELENE BEUCHER, FRANCOIS GEOFFROY, BRIGITTE DOLIGEZ
Search and Discovery.com
... Fourier transforms and a classical method of signal processing, the Wiener filter. The deconvolution process is extensively treated in ([1] Benito...
2003
Abstracts: The Conventional and Non-conventional Seismic Differencing; #90173 (2015)
Vanja Vracar and Robert J. Ferguson
Search and Discovery.com
... in the frequency domain, hence, equation (1) is Fourier transformed to: (2) AAPG Search and Discovery Article #90173 CSPG/CSEG/CWLS GeoConvention 2011...
2015