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The AAPG/Datapages Combined Publications Database
Showing 20,858 Results. Searched 200,619 documents.
Acoustic Properties of "Young" Carbonate Rocks, Odp Leg 166 and Boreholes Clino and Unda, Western Great Bahama Bank
J.A.M. Kenter, F.S. Anselmetti, P.H. Kramer, H. Westphal,, M.G.M. Vandamme
Journal of Sedimentary Research (SEPM)
... cemented to uncemented and compacted background sediments have velocities that, at a given porosity, fall below the time-average equation for calcite...
2002
Influence of node position uncertainty on FWI and Mirror-RTM
Felipe Capuzzo, Marco Cetale, Sergio Luiz da Silva, Roger Moreira, Felipe T. Costa, Ammir A. Karsou, Jorge Lopez
International Meeting for Applied Geoscience and Energy (IMAGE)
... of modeling the seismic wavefield by solving a wave equation. In this work, we consider the acoustic wave equation which, for our problem, is defined as: m...
2023
Sensitivity analysis of acoustic waveform inversion to velocity anomalies in the near-surface using the Frchet derivative
Ao Cai, Colin A. Zelt
International Meeting for Applied Geoscience and Energy (IMAGE)
... wave equation is (Claerbout, 1985) 1 ๐ฃ๐ฃ 2 (๐๐) ๐๐ 2 ๐๐(๐๐,๐ก๐ก;๐๐ ๐ ๐ ) ๐๐๐ก๐ก 2...
2022
Experiments on Longshore Transport and Sorting of Pebbles: Chesil Beach, England
A. P. Carr
Journal of Sedimentary Research (SEPM)
...) (fig. 1), some 14.5 km apart gave a correlation coefficient for significant wave height of 0.925 using 981 pairs of data. They gave the equation y= 1.06...
1971
Least-squares reverse time migration of seismic source coding based on Shearlet transform
Yingkaer Nabi, Xiangbo Gong, Zhuo Xu
International Meeting for Applied Geoscience and Energy (IMAGE)
... of the subsurface medium. Migration methods commonly used in industrial processes include Kirchhoff ray migration, one-way wave fluctuation equation...
2022
Echo phone for direct attenuation indication
Lu Liu, Tong Fei, Fuhao Qin, Yi Luo
International Meeting for Applied Geoscience and Energy (IMAGE)
... features. This method first focuses the surface seismic data back on the seal of the target via the wave-equation redatuming approach. This simulates...
2022
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)
.... Theory A typical first-order system of equations with 2 state variables for wave propagation can be written in a matrix equation form as ๐ฎฬ ...
2024
Pore Pressure Prediction in Organic Shales of the Permian Basin: Rock Physics Basis
Prajnajyoti Mazumdar, Lev Vernik, Alex Dale
Unconventional Resources Technology Conference (URTEC)
... alongside basin modeling and petrophysical data for calibration, can predict pore pressure in offset wells drilled in the Permian Basin. The P-wave...
2025
Multiscale Seismic Models of Complex Fracture Networks
Richard L. Gibson Jr., Yalchin Efendiev, Judith Chester, Yongchae Cho, Edith Sotelo
Unconventional Resources Technology Conference (URTEC)
... the equation โโ โ ๐ ๐ ! = ๐๐๐ ! . (3) The boundary condition applied in this problem is ๐ ! = 0. Each solution is a standing wave mode for the cell K...
2017
Estimation of Seismic Attenuation in the Delaware Basin Using Peak Frequencies
Maลgorzata Drwiลa, Leo Eisner, Zuzana Jechumtalovรก, Denis Anikiev, Randy Keller
Unconventional Resources Technology Conference (URTEC)
... using measured peak frequency of the direct wave of shear source. Eisner et al. (2013) proposed the following equation: (1...
2018
Longshore Drift: Trapped in an Expected Universe
J.A.G. Cooper, O.H. Pilkey
Journal of Sedimentary Research (SEPM)
..., S.B., 2002, Process-response modeling of wave-dominated coastal systems: simulating evolution and stratigraphy on geological timescales: Journal...
2004
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)
... acoustic wavefield to update the velocity and reflectivity models, our solution utilizes an alternative formulation of the wave-equation, based...
2022
Determination of Cementation Exponent (M): Chapter II
George B. Asquith
AAPG Special Volumes
...: Nugent (1984): [EQUATION] The author has found that the Nugent (1984) formula works well in carbonates with vuggy and fossilmoldic porosity...
1985
Abstract: A Comparison of Standard Migration with EOM for Hussar Data; #90174 (2014)
Thais A. Guirigay, John C. Bancroft, and J. Helen Isaac
Search and Discovery.com
... or two-way, travel time can be computed from: , (2) The equation (2) is known as the double square root (DSR) equation and defines the traveltime...
2014
Abstract: Seismic Source Wavelet Estimation and Sparse-spike Deconvolution; #90174 (2014)
Zhengsheng Yao and Mike Galbraith
Search and Discovery.com
... of great interest in current research (e.g. Dondurur, 2010). Solving equation (1) without knowing both r and h is categorized as blind deconvolution...
2014
Poisson binomial-based random undersampling scheme for near-surface compressive sensing
Sayan Mukherjee, Yunyue Elita
International Meeting for Applied Geoscience and Energy (IMAGE)
.... We present a segmented Poisson Binomial undersampling scheme. Our approach is motivated by the fundamentals of surface wave propagation in the near...
2022
Optimized transparent boundary conditions for wave propagation
G. Roncoroni, B. Arntsen, E. Forte, M. Pipan
International Meeting for Applied Geoscience and Energy (IMAGE)
... insight into ongoing physical processes. Computing the wave equation in gradients, extend our capabilities to accommodate mutual parameter variations...
2024
Plotting Equation for Gaussian Percentiles and a Spreadsheet Program for Generating Probability Plots: REPLY
James H. Balsillie, Joseph F. Donoghue, Kenji M. Butler, Jennifer L. Koch
Journal of Sedimentary Research (SEPM)
...Plotting Equation for Gaussian Percentiles and a Spreadsheet Program for Generating Probability Plots: REPLY James H. Balsillie, Joseph F. Donoghue...
2003
Abstract: On Choosing Differential Operators; #90171 (2013)
John C. Bancroft
Search and Discovery.com
... filters to reduce aliasing, finite difference solutions to the wave equation, or wavelet correction when modelling with diffractions or migrating...
2013
Abstract: On Choosing Differential Operators; #90171 (2013)
John C. Bancroft
Search and Discovery.com
... filters to reduce aliasing, finite difference solutions to the wave equation, or wavelet correction when modelling with diffractions or migrating...
2013
Unconventional Carbonate Reservoir Characterization Using Sonic Velocity and Characterization of Pore Architecture: An Example From the Mid-Continent Mississippian Limestone; #50979 (2014)
Beth Vanden Berg, G. Michael Grammer, Gregor Eberli, Ralf Weger
Search and Discovery.com
...-, and fifth-order scale. Acoustic response (compressional and shear wave) for a sub-set of samples from the Mississippian Limestone varies from 6500...
2014
Anisotropic PP and PSv Prestack Depth Migration of 4C (OBC) Seismic Data, Offshore Trinidad
Tony Johns
Search and Discovery.com
... growth fault. Details of the P- and PSv-wave processing of this dataset through anisotropic prestack time migration were previously described (Johns et...
Unknown
Anisotropic PP and PSv Prestack Depth Migration of 4C (OBC) Seismic Data, Offshore Trinidad
Tony Johns
Search and Discovery.com
... growth fault. Details of the P- and PSv-wave processing of this dataset through anisotropic prestack time migration were previously described (Johns et...
Unknown
Abstracts: CO2 Rock Physics: A Laboratory Study; #90173 (2015)
Helen Yam and Douglas R. Schmitt
Search and Discovery.com
... kilometer of most sedimentary basin. P- and S-wave velocities and differential attenuation coefficients were determined from the laboratory data...
2015
A 3D immersed boundary method for acoustic wavefield simulation with irregular surface topography
Xiang Li, Ziduo Hu, Yancan Tian, Wei Liu, Zhonghua Xu, Gang Yao
International Meeting for Applied Geoscience and Energy (IMAGE)
... function for injecting the point source ๐ ๐ก at the source location ๐ฑ . The second-order wave equation could be solved using the finite difference method...
2023