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The AAPG/Datapages Combined Publications Database
Showing 1,680 Results. Searched 200,293 documents.
Abstracts: Padé Approximation for Analyzing Multiple Reflections; #90173 (2015)
Dali Zhang, Michael P. Lamoureux, and Gary F. Margrave
Search and Discovery.com
... function of a special form. The [ p, q] -Padé approximation of the z-transform function is formulated as a constrained least squares minimization problem...
2015
Multiparameter FWI imaging in the Gulf of Mexico
Tom Rayment, Karen Dancer, James McLeman, James Penwarden, Tim Ooi, Monica Hartmann
International Meeting for Applied Geoscience and Energy (IMAGE)
... issues that employs an L-BFGS optimiser combined with an adaptive-gradient-like approach. MP-FWI imaging is a multi-scattering, least-squares imaging...
2023
Prestack true-amplitude angle-domain viscoelastic least squares reverse time migration
Yue Wang, Yang Luo, Peng Shen, Jingru Chen, Guangchi Xing, Ao Cai, Mark Fan, Guojian Shan, Lin Zhang, Xiaoting Lou, Zhengyun Zhou
International Meeting for Applied Geoscience and Energy (IMAGE)
...Prestack true-amplitude angle-domain viscoelastic least squares reverse time migration Yue Wang, Yang Luo, Peng Shen, Jingru Chen, Guangchi Xing, Ao...
2024
Abstract: Comparison of Low-Frequency Data from Co-Located Receivers Using Frequency Dependent Least-Squares-Subtraction Scalars; #90172 (2014)
Kevin W. Hall, Gary F. Margrave, Malcolm B. Bertram
Search and Discovery.com
...Abstract: Comparison of Low-Frequency Data from Co-Located Receivers Using Frequency Dependent Least-Squares-Subtraction Scalars; #90172 (2014) Kevin...
2014
Methane Re-Saturation in Barnett Shale Core Plugs and Determination of Post-Coring Gas Loss
Search and Discovery.com
N/A
Role of Compaction in Listric Shape of Growth Normal Faults
Hong-Bin Xiao, John Suppe
AAPG Bulletin
.... Therefore, we abandon direct observations of initial conditions for a least-squares inversion. First, let us choose an initial sand porosity...
1989
A strategy for acoustic impedance direct inversion in depth domain
Ruiqian Cai, Chengyu Sun, Shizhong Li
International Meeting for Applied Geoscience and Energy (IMAGE)
.... To demonstrate the improvement of direct inversion results, the results of the damped least squares inversion method are used for comparison. It is worth...
2022
Nonlinear LS-RTM based on the seismic scale separation and full-wavefield multiparameter FWI
ystein Korsmo, Yang Yang, Nizar Chemingui, Andrey Pankov, Antonio Castiello
International Meeting for Applied Geoscience and Energy (IMAGE)
... Chemingui, Andrey Pankov and Antonio Castiello, PGS Summary Least-squares migration (LSM) images the subsurface through an inversion process and seeks...
2022
Precise Sediment Density Determination by Gamma-ray Attenuation Alone: NOTES
Robert B. Whitmarsh
Journal of Sedimentary Research (SEPM)
... volume of core and plastic liner. The least squares line fitted to 208 such comparisons never deviates by more than 0.03 gm/cc from the expected line...
1971
A graph-space optimal transport FWI approach based on κ-generalized Gaussian distribution
Sérgio Luiz E. F. da Silva, Giorgio Kaniadakis
International Meeting for Applied Geoscience and Energy (IMAGE)
... are compared using an objective function, usually based on the least-squares method (Virieux and Operto, 2009). FWI is a robust methodology that significantly...
2023
Use of Ridge Regression Analysis in Geology: ABSTRACT
Thomas A. Jones
AAPG Bulletin
... distributed variables. The least-squares estimates of the regression coefficients commonly differ from the true coefficients if the independent variables...
1971
Structure-Oriented Texture Model Regression for Seismic Structure Visualization and Interpretation
Dengliang Gao
GCAGS Transactions
... of trigonometric sine function with a specific amplitude, frequency, and phase. Then it performs least-squares linear regression analysis between the model...
2006
Elastic Multi-parameter FWI Imaging – a North West Shelf undeveloped gas field case study
Fabio Mancini
Southeast Asia Petroleum Exploration Society (SEAPEX)
... raw field data as input and invert for a highresolution least-squares image that is free of the source signature, source and receiver ghosts...
2025
3D DC survey design for electrodes at the surface
Diego Domenzain
International Meeting for Applied Geoscience and Energy (IMAGE)
... of Geoscientists & Engineers, 1–5. Loke, M., 2003, Rapid 2D resistivity & IP inversion using the least-squares method: Geotomo Software, Manual. Loke, M...
2024
The processing method of ERI data based on irregular topography
Wang Hao, Huang Jianping, Li Zhenchun
International Meeting for Applied Geoscience and Energy (IMAGE)
... on inversion method of ERI data, least-squares inversion (Loke et al., 1996), the finiteelement method (Sasaki, 1994) have been proposed and applied...
2022
Least-squares reverse time migration for attenuating TTI media
Xinru Mu, Tariq Alkhalifah
International Meeting for Applied Geoscience and Energy (IMAGE)
...Least-squares reverse time migration for attenuating TTI media Xinru Mu, Tariq Alkhalifah Least-squares reverse time migration for attenuating TTI...
2024
Quantitative Mineralogical Analysis of Carbonate Sediments: Comparison of X-ray Diffraction and Electron Probe Microanalyzer Methods: NOTES
Jon N. Weber
Journal of Sedimentary Research (SEPM)
... the appropriate measurements into the equation for the corresponding "working curve" (determined by a least squares fit to a large number of area measurements...
1968
Seismic Trace Interpolation using Adaptive Prediction Filters
Search and Discovery.com
... interpolation strategy based on overlapping adjacent windows, we have adopted the Recursive Least Squares method to update the prediction error filters...
2013
Abstract: Velocity Model Building with Weighted Linearized Inversion A VSP Data Case Study; #90187 (2014)
Mingyu Zhang, Richard Kuzmiski, and Zhengsheng Yao
Search and Discovery.com
... first arrival data is contaminated by colored noise, conventional inversion that is based on least squares may not give the correct solution...
2014
Field Method for Determining Rapidly the Dry Weight of Wet Sand Samples: RESEARCH METHOD PAPER
Nicholas C. Kraus, Lindsay Nakashima
Journal of Sedimentary Research (SEPM)
... weights (g) and results of linear least squares fit End_Page 550------------------------ the 1.2-mm sand were available. The samples were wetted...
1986
Fast Gauss-Newton full-wavefield migration
Siamak Abolhassani, Eric Verschuur
International Meeting for Applied Geoscience and Energy (IMAGE)
..., of the data-error functional employed in the least-squares formulation. In this study, we will address this issue, namely the cheap computation...
2022
Abstract: Robust Rank-Reduction Filters for Erratic Noise; #90174 (2014)
Stewart Trickett, Lynn Burroughs, and Andrew Milton
Search and Discovery.com
...). This is optimal in that, given an n-by-n matrix A and a rank k, it generates the rank-k matrix R that minimizes Thus the truncated SVD is a least-squares solution...
2014
Acoustic waveform inversion with the Lippmann-Schwinger equation constraint
Rahul Sarkar, Biondo Biondi
International Meeting for Applied Geoscience and Energy (IMAGE)
... the penalty method objective function (Eq. 5). There one first updates the wavefields by solving a linear least squares problem (Eq. 6), which...
2022
Practical Application of Adaptive Least-Squares RTM to Advance Field Development and Uncover New Reserves in the Sub Salt Provinces
Search and Discovery.com
N/A
Improved subsalt imaging in Brazil Campos basin Cascaded application of hybrid interbed demultiple, P- and S-salt velocity joint migration, and subsalt converted wave suppression
Riaz Alai, Faqi Liu, Darrell Armentrout, David Brookes, Terry Johnson, Milos Cvetkovic, Gundogan Coskun, Shah Sulaiman, Kien Kok Lee, Afiq Mokhtar, Christopher Lee Slind, Hafizan Wahab, Wan Ching Low, Ali Andrea B. Hashim
International Meeting for Applied Geoscience and Energy (IMAGE)
... Top of Salt • Marchenko method - between Top and Base of Salt and through a simultaneous Least-Squares matching with the data, the estimated interbed...
2022