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The AAPG/Datapages Combined Publications Database
Showing 2,652 Results. Searched 195,354 documents.
Abstract: Trace Interpolation and Elevation Statics by Conjugate Gradients; #90172 (2014)
Marcus Wilson, Robert J. Ferguson
Search and Discovery.com
... to speed inversion. Conjugate Gradients The conjugate gradient method is an iterative algorithm used to approximate a solution x to a linear system Ax = b...
2014
Abstracts: Implicit Preconditioning for Least-squares Nonstationary Phase Shift; #90173 (2015)
Marcus R. Wilson and Robert J. Ferguson
Search and Discovery.com
... of the conjugate gradient method. AAPG Search and Discovery Article #90173 CSPG/CSEG/CWLS GeoConvention 2011, Calgary, Alberta, Canada, May 9-11, 2011 Non...
2015
Abstract: Upscaling of Reservoir Properties; #90224 (2015)
Evgeny Skripkin, Apostolos Kantzas, and Sergey Kryuchkov
Search and Discovery.com
... are constructed and a system of linear equations is obtained. Due to the sparce nature of the matrix of system conjugate gradient method is used as one...
2015
Abstracts: A Non-Linear Conjugate Gradient (CG) Method to Solve for Vp, Vs and Density from Seismic Elastic Impedance; #90173 (2015)
Yexin Liu and Zhuoheng Chen
Search and Discovery.com
...Abstracts: A Non-Linear Conjugate Gradient (CG) Method to Solve for Vp, Vs and Density from Seismic Elastic Impedance; #90173 (2015) Yexin Liu...
2015
Abstract: Reverse Time Adjoint and Reverse Time Inverse Migration, by H. Liu andY. Luo, #90188 (2014)
Search and Discovery.com
2014
Abstract: Full Waveform Inversion of Crosswell Seismic Data Using Automatic Differentiation; #90187 (2014)
Danping Cao and Wenyuan Liao
Search and Discovery.com
... method, which are widely used in solving the gradient-based optimization problem. The mostly used optimization methods include the conjugate-gradient...
2014
Abstract: Near-surface Velocity Modeling through a Computationally Efficient Implementation of 1.5D Laplace-Fourier Full Waveform Inversion; #91204 (2023)
Apostolos Kontakis, Diego Rovetta, Daniele Colombo, Ernesto Sandoval-Curiel
Search and Discovery.com
... by a strong velocity inversion at the top and two embedded velocity anomalies. The method starts from a velocity gradient as an initial model...
2023
ABSTRACT Crust Evolution During South Atlantic Rifting - Insights from Conjugate Structural Restoration Models, #90104 (2010)
Love Frank R.; Fraser Scot I.; Casey Katya E.; Reimann Kristan K.
Search and Discovery.com
...ABSTRACT Crust Evolution During South Atlantic Rifting - Insights from Conjugate Structural Restoration Models, #90104 (2010) Love Frank R.; Fraser...
2010
ABSTRACT: Seismic Data Inversion Using Geologic Constraints, by Robert Vest; #91034 (2010)
Search and Discovery.com
2010
Abstract: Seismic Data Inversion Using Geologic Constraints, by R. T. Vest; #91018 (1992).
Search and Discovery.com
1992
Abstract: Estimating Macroscopic Mechanical Properties Via Grain-Scale Simulations; #90063 (2007)
Search and Discovery.com
2007
A deep learning-based inverse Hessian for full-waveform inversion
Mustafa Alfarhan, Matteo Ravasi, Tariq Alkhalifah
International Meeting for Applied Geoscience and Energy (IMAGE)
... is given by a scaled version of the negative of the gradient and the nonlinear conjugate-gradient method where the update is a combination...
2023
Modeling of Electromagnetic Response on Rugged Seafloor by Using Finite-Difference Method
Search and Discovery.com
N/A
Abstract: A New Approach to Automated Well-Log Correlation in Three Dimensions: Examples from the Permian Basin, Texas;
Zoltan Sylvester
Search and Discovery.com
... of pairwise DTW correlations into a least-squares optimization problem that is solved through the conjugate gradient method. The resulting...
Unknown
Abstract: Stabilizing Seismic Absorption Compensation; #90171 (2013)
Changjun Zhang
Search and Discovery.com
... the problem using conjugate gradient method. Method Inverse problems can be approached from the point of view of probability theory (Tarantola, 1987...
2013
Abstract: Inexact Full Newton Method for Full Waveform Inversion Using Simultaneous Encoded Sources; #90187 (2014)
Amsalu Y. Anagaw and Mauricio D. Sacchi
Search and Discovery.com
... and full Newton can be implemented. The Newtonian methods generally converge faster than the gradient based nonlinear conjugate gradient method...
2014
Abstract: Improving the efficiency of the Forward Problem Solver for 3D resistivity modeling
Gregory Nash
Atlantic Geology
... right-hand sides. Because of the sparsity of A, current algorithms solve this problem efficiently using a conjugate gradient algorithm, which provides...
2007
Abstract: Parallel Implementation of Pre-stack Least-squares Migration for Distributed Systems; #90171 (2013)
Sam T. Kaplan
Search and Discovery.com
... for evaluating the forward, adjoint and least-squares inverse (using the conjugate gradient method). All run-times are given in minutes. Discussion We...
2013
Abstract: Modeling Crossing Conjugate Faults in Structural Frameworks, by Karen S. Hoffman, John W. Neave, and Erik H. Nilsen; #90078 (2008)
Search and Discovery.com
2008
Abstract: Conjugate Margin : An Exploration Strategy; #90174 (2014)
R.Borsato, J.Greenhalgh, M. Martin, Tom Ziegler, Paul Markwick, and Andy Quallington
Search and Discovery.com
...Abstract: Conjugate Margin : An Exploration Strategy; #90174 (2014) R.Borsato, J.Greenhalgh, M. Martin, Tom Ziegler, Paul Markwick, and Andy...
2014
Abstract: Geoelectric Response of the Crust and Upper Mantle, Lake Nipigon Area, Ontario; #90172 (2014)
Cassandra Tycholiz, Ian Ferguson
Search and Discovery.com
... in the Superior Province using a non-linear conjugate gradient inversion method. The resulting resistivity models show a number of significant resistivity...
2014
Diving wave tomography: Velocity modelling using first arrival traveltime
Amatul Syafi Abdul Basit, Abdul Rahim Md Arshad, Arulini Permalu
Geological Society of Malaysia (GSM)
... d(k) – the steepest-descent and the conjugate gradient method. The former being the simplest, oldest known numerical method for unconstrained...
2022
Abstract: Re-establishment of Gradient in Frequency-domain Elastic Waveform Inversion; #90174 (2014)
Ju-Won Oh, Dong-Joo Min, and Felix J. Herrmann
Search and Discovery.com
... that the weighting method enhances gradient images and inversion results compared to the conventional inversion algorithms. Introduction In the waveform...
2014
Frequency Gradient of Spectral Decomposition for Identifying Hydrocarbon Reservoir Example from Indonesian Field
Abdul Haris, Ahsanul Khair
Indonesian Petroleum Association
...Frequency Gradient of Spectral Decomposition for Identifying Hydrocarbon Reservoir Example from Indonesian Field Abdul Haris, Ahsanul Khair...
2012
Fault Detection From 3-D Seismic Data and Distribution of Conjugate Faults in the Bakken Formation
Ismot Jahan, John Castagna, Michael Murphy
Unconventional Resources Technology Conference (URTEC)
...Fault Detection From 3-D Seismic Data and Distribution of Conjugate Faults in the Bakken Formation Ismot Jahan, John Castagna, Michael Murphy...
2017