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The AAPG/Datapages Combined Publications Database
Showing 1,680 Results. Searched 200,293 documents.
Abstract: Trace Interpolation and Elevation Statics by Conjugate Gradients; #90172 (2014)
Marcus Wilson, Robert J. Ferguson
Search and Discovery.com
... is computed using an assumed velocity model and the wavefield at depth is derived using weighted damped least squares. This method is used to correct common...
2014
Q-LSRTM using viscoacoustic VTI wave equation based on the nearly constant Q model
Zhang Shan-Shan, Gu Bing-Luo, Li Zhen-Chun
International Meeting for Applied Geoscience and Energy (IMAGE)
.... In this paper, we present a Q-compensated least-squares reverse time migration method in viscoacoustic VTI media (Q-VTI-LSRTM) using the pure qP-wave...
2022
Abstract: Acceleration on Sparse Promoting Seismic Applications; #90187 (2014)
Lina Miao and Felix Herrmann
Search and Discovery.com
...||1 subject to ||Ax – b||2 ), seeking a minimum one-norm solution of an undetermined least-squares problem. Trying to probe the optimum trade-off...
2014
Application of Trend Analysis to Pre-Morrow Surface, Southeastern Hugoton Embayment Area
M. W. Schramm Jr.
Oklahoma City Geological Society
... by the method of least squares (figure 3). The objective of the least squares method is to make the sum of the squared residual values the least possible...
1970
Application of Trend Analysis to Pre-Morrow Surface, Southeastern Hugoton Embayment Area, Texas, Oklahoma, and Kansas
Martin W. Schramm, Jr.
AAPG Bulletin
... surfaces are fitted by the method of least squares (Fig. 3). The objective of the least-squares method is to make the sum of the squared residual values...
1968
Level of Heat Flow in the Western Part of the Tersko-Kuma Depression
G. M. Sukharev, S. P. Vlasova
Petroleum Geology: A Digest of Russian Literature
... of geothermal gradient calculated by the least squares method for wells 18, 11, and 13 for the 1800–3700 m interval are similar. For example, in well 18...
1966
Abstract: Kirchhoff Imaging in a Matrix Form. Part I: Modelling; #90174 (2014)
Abdolnaser Yousefzadeh and John C. Bancroft
Search and Discovery.com
..., . The modelling matrix may be saved in the computer memory and multiplied with the model several times when solving least squares Kirchhoff migration...
2014
Abstract: Attenuation Compensation in Least-Squares Reverse Time Migration Using the Visco-Acoustic Wave Equation, by Gaurav Dutta; #90182 (2013)
Search and Discovery.com
2013
Abstract: 3-D Acquisition Realities and Processing Strategies in Mountainous Thrust Areas, by S. Mackay, S. Wright, J. Gaiser, A. Jackson, C. Beasley, and R. D. Wisecup; #90958 (1995).
Search and Discovery.com
1995
Abstract: The Deforming Philippines Orogen: Detail of Long Term Strain-Rate and Seismicity Calculations from Neotectonic Kinematic Analysis, by W. K. Rucker and P. Bird; #90087 (2009).
Search and Discovery.com
2009
ABSTRACT: Integrating Gigapixel Panoramas and LiDAR: Increasing Geological Interpreters Power in 3D Color Space, by Joseph el-Azzi, Reuben Reyes, and Charles Kerans; #90158 (2012)
Search and Discovery.com
2012
Fault Motion and the Characteristics of Fracture Intensification Domains: A Quantitative Analysis
Search and Discovery.com
N/A
Shale Gas and Shale Oil Identification Through Geophysical Inversion of Well Logs
Search and Discovery.com
N/A
The Use of Multivariate Analysis and Raman Spectroscopy for the Assessment of Thermal Maturity
Search and Discovery.com
N/A
ABSTRACT: Gravity Signatures of the Deep-Water Reservoirs of Offshore Nigeria, West Africa; #90115 (2010)
A. A. Adepelumi and O. O. Folarin
Search and Discovery.com
... was achieved.Furthermore spectral analyses method was applied to the Bouguer anomaly. The anomaly depth was obtained by computing least-squares fit to the lowest...
2010
Abstract: Surface-consistent Matching Filter for Time-lapse Processing; #90174 (2014)
Mahdi H. Almutlaq and Gary F. Margrave
Search and Discovery.com
.... We compute the spectral ratio in the time domain by first designing trace-sequential, least-squares match filters and then Fourier transforming them...
Unknown
A Gravity Analysis of West-Central Calcasieu Parish, Louisiana
Forrest Wilson , James A. Noel
GCAGS Transactions
... values, these points served as the input to least squares and model analysis systems. The least squares, trend surfaces, were calculated and mapped using...
1983
End-Member Feldspar Concentrations Determined by FTIR Spectral Analysis
Abigail Matteson, Michael M. Herron
Journal of Sedimentary Research (SEPM)
... FTIR spectra were constructed from sample spectra and their associated K-, Na- and Ca- feldspar concentrations using a least-squares full spectrum...
1993
Operator chains and seismic data decomposition
Sergey Fomel
International Meeting for Applied Geoscience and Energy (IMAGE)
..., 2003, Separable nonlinear least squares: The variable projection method and its applications: Inverse Problems, 19, R1, doi: https://doi.org...
2022
Angle-constrained VSP least-squares reverse-time migration based on a high-efficiency stabilized Poynting vector
Xuan Ke, Mauricio Sacchi, Ying Shi
International Meeting for Applied Geoscience and Energy (IMAGE)
...Angle-constrained VSP least-squares reverse-time migration based on a high-efficiency stabilized Poynting vector Xuan Ke, Mauricio Sacchi, Ying Shi...
2023
Abstracts: Prewhitening with Matrices; #90173 (2015)
C. Robert Pinnegar
Search and Discovery.com
... amplitude followed by zeroes. ( is the length of , and is the length of .) To obtain a least-squares estimate of from (3), we must solve the familiar...
2015
Horizon detection with CNN-based multiscale volumetric flattening
Jesse Lomask
International Meeting for Applied Geoscience and Energy (IMAGE)
... surfaces are subsequently fitted to these dips using least squares inversion. This method is demonstrated on 3D seismic using both 2D and 3D CNNs...
2023
Antialiasing 5D Interpolation; #41497 (2014)
Stephen K. Chiu
Search and Discovery.com
... initial model are typically not aliased and can be used to constrain the least-squares inversion in MWNI, frequency by frequency, to overcome the aliasing...
2014
Abstracts: Interpolation of Nonstationary Seismic Records using a Fast Generalized Fourier Transform; #90173 (2015)
Mostafa Naghizadeh and Kristopher A. Innanen
Search and Discovery.com
.... The nonredundant nature of FGFT renders a big computational advantage to this interpolation method. A least-squares fitting scheme is used next to retrieve...
2015
High resolution imaging using multiples A North Sea case study
Chandan Kumar, Rodney Johnston, Petr Jilek, Xiaolei Song, Mikhail Davydenko
International Meeting for Applied Geoscience and Energy (IMAGE)
... In this paper, we propose a workflow based on least-squares full wavefield migration (LS-FWM). It can make use of raw hydrophone and geophone data...
2024