Welcome to the new Datapages Archives
Datapages has redesigned the Archives with new features. You can search from the home page or browse content from over 40 publishers and societies. Non-subscribers may now view abstracts on all items before purchasing full text. Please continue to send us your feedback at emailaddress.
AAPG Members: Your membership includes full access to the online archive of the AAPG Bulletin. Please login at Members Only. Access to full text from other collections requires a subscription or pay-per-view document purchase.
Welcome to the new Datapages Archives
Search Results > New Search > Revise Search
The AAPG/Datapages Combined Publications Database
Showing 19,681 Results. Searched 195,354 documents.
Abstracts: Determining Elastic Constants of an Orthorhombic Material by Physical Seismic Modeling; #90173 (2015)
Faranak Mahmoudian, Gary F. Margrave, P. F. Daley, and Joe Wong
Search and Discovery.com
... a reasonably accurate approximation for P-wave group velocity from the eikonal equation. They obtained an expression for P-wave group velocity...
2015
A Coupled Pore-Scale Modelling Approach to Capture Macro-Scale Stress-Dependent Permeability of Rocks
Keivan Khaleghi, Stephen Talman, Alireza Rangriz Shokri, Bauyrzhan K. Primkulov, Abel S. Juncal, Rick J. Chalaturnyk
Unconventional Resources Technology Conference (URTEC)
.... Initially, a list of radii and coordinates of the center of each spherical grain within a given sample volume and its associated porosity were exported...
2019
Marine Seismic Sources: Part XII: Sound in the Sea
Martin Landrø, Lasse Amundsen
GEO ExPro Magazine
... the energy spreads to fill it. Therefore, the energy per unit length of the wave must get smaller. Spherical and cylindrical spreading are two simple...
2012
Abstract: Regular Grids Travel Time Calculation Fast Marching with an Adaptive Stencils Approach; #90187 (2014)
Zhengsheng Yao, Mike Galbraith, and Randy Kolesar
Search and Discovery.com
... (a) a plane wavefront and (b) circular wave from a point source propagating through a grid model. Numerically solving this equation produces first arrival...
2014
AVO Modeling of Monochromatic Spherical Waves: Comparison to Band-Limited Waves; #41567 (2015)
Charles Ursenbach, Arnim Haase
Search and Discovery.com
... reflection coefficients, the Rayleigh wavelet approach of equation 1 also provides useful insight into the relationship between plane-wave and spherical-wave...
2015
Spherical-Wave Computational AVO Modelling in Elastic and Anelastic Isotropic Two-Layer Media; #41564 (2015)
Arnim B. Haase, Charles P. Ursenbach
Search and Discovery.com
...Spherical-Wave Computational AVO Modelling in Elastic and Anelastic Isotropic Two-Layer Media; #41564 (2015) Arnim B. Haase, Charles P. Ursenbach...
2015
Abstract: Orientation Analysis of Borehole Geophones in Vertical and Deviated Wells: Calibration Consistency; #90174 (2014)
Peter G. Gagliardi and Don C. Lawton
Search and Discovery.com
... coordinates of the source location, according to: xs ys s arctan . (2) Additionally, since Equation 1 will only produce angles between...
2014
Abstract: P- and S-Wave Velocity Measurements and Pressure Sensitivity Analysis of AVA Response; #90211 (2015)
Tiewei He and Douglas Schmitt
Search and Discovery.com
... and S wave transducers on each end of the cylindrical sample. This arrangement is then hermitically sealed. The prepared sample is then put in a pressure...
2015
Multifocusing Stack Technique for Subsurface Imaging, #40749 (2011)
Sunjay Sunjay,
Search and Discovery.com
...- involved in equation (1) are curvature radii of the fictitious wave fronts ΣS and ΣG. It is clear from Figure 3 that, for a given central ray, the radii R...
2011
Forward modeling for arbitrary irregular free-surface based on body-fitted grid
Erxiang Wei, Jianping Huang, Zhenchun Li
International Meeting for Applied Geoscience and Energy (IMAGE)
.... Shen, and L. Zhao, 2012, Three-dimensional anisotropic seismic wave modelling in spherical coordinates by a collocated-grid finitedifference method...
2023
Abstract: Tau-P Seismic Data Processing: Fast Slant Stack Using the Hartley Transform
Leong Lap Sau, Ng Tong San
Geological Society of Malaysia (GSM)
... be reconstructed by an inverse transform after windowing in the T-P plane. Cylindrical slant stack procedures permit a plane-wave decomposition...
1991
Finite Difference Modelling: Part IV
Lasse Amundsen, Ørjan Pedersen, Martin Landrø
GEO ExPro Magazine
... the discussion that was started in GEO ExPro Vol. 15, No. 2. The finite difference method applied to the acoustic wave equation gives beautiful wave...
2019
Some "Quick-Look" and Wellsite Applications of Wireline Formation Testing Tools with Emphasis on Permeability Indicators as an Aid to Choosing Net Pay Discriminators
P. Cooke-Yarborough
Indonesian Petroleum Association
... until an impermeable barrier is reached, when the pressure wave propagation will become essentially cylindrical. The reservoir section in the area...
1984
-- no title --
user
Search and Discovery.com
... to a spherical-wave reflection coefficient. Direct comparison shows that monochromatic waves have oscillatory, non-decaying weighting functions...
Unknown
-- no title --
user
Search and Discovery.com
... to a spherical-wave reflection coefficient. Direct comparison shows that monochromatic waves have oscillatory, non-decaying weighting functions...
Unknown
A Semi-analytical Solution of the Induced Stress Change in a Layered Reservoir Based on the Stress Formulation
Shihao Wang, Yanbin Zhang, Ouassim Khebzegga, Bin Wang, Zhe Liu, Xian-Huan Wen
Unconventional Resources Technology Conference (URTEC)
... rocks. We apply Fourier’s transform to the governing hydromechanical equation and enforce continuity conditions on the interfaces between neighboring...
2022
EXTENDED ABSTRACT: Lateral numerical dispersion with wave equation migration II
Wen-Jing Wu
CSPG Special Publications
...EXTENDED ABSTRACT: Lateral numerical dispersion with wave equation migration II Wen-Jing Wu 1998 248 251...
1998
Quartz Grain Orientations--1 (The Photometric Method)
R. F. Sippel
Journal of Sedimentary Research (SEPM)
... of the extraordinary wave can be readily calculated directly from the indicatrix in a direction normal to incidence. The equation of the indicatrix is [X2]/[2] + [Z2...
1971
Optimization of Wave Parameters in the "a-b-c- ..." Model
R. Craig Starns , Robert C. Glassen
GCAGS Transactions
... ratio exceeds 0.78, the longshore component of wave power is computed at the breaker point using the equation from Komar 1971: PL =2ECSin2 where E =H 2/8...
1975
Abstract: Regular Grids Travel Time Calculation A Practical Huygens Wavefront Expansion Approach; #90187 (2014)
Zhengsheng Yao, Mike Galbraith, and Randy Kolesar
Search and Discovery.com
... on a wave propagation wavefront and that they satisfy Assuming that points ( (1) where x and z are spatial coordinates, is the traveltime (eikonal...
2014
The Attenuation Effects of Surface-Wave Propagations on Rockmass Using SASW Method
Suharsono, Abdul Rahim Samsudin
Geological Society of Malaysia (GSM)
..., the methods utilize only Rayleigh waves. The Rayleigh waves will propagate radially outwards along a cylindrical wave front. The vertical ground displacement...
2003
Abstract: Regime Rays: Visualizing the Fermat/Snell Loci in Homogeneous Anisotropic Media; #90171 (2013)
William J. Vetter
Search and Discovery.com
...) in spherical coordinates (θ, φ )], together with the pathtime minimizing derivatives re (θ, φ ). The below equation 2 is its columnvectored form, after re...
2013
Application of finite difference eikonal solver for traveltime computation in forward modeling and migration
Amir Mustaqim Majdi, Seyed Yaser Moussavi Alashloo, Nik Nur Anis Amalina Nik Mohd Hassan, Abdul Rahim Md Arshad, Abdul Halim Abdul Latiff
Geological Society of Malaysia (GSM)
... be computed by solving wave equation of the ray path or the eikonal wave equation. Accurate method of computing traveltimes will give a significant impact...
2021
Optical Methods and Equipment for Processing Geophysical Data: ABSTRACT
Arthur L. Ingalls
AAPG Bulletin
.... The equations involved may be in either X, Y coordinates or R, ^Thgr coordinates, whichever lends itself to the best mathematical analysis. LaserScan...
1965
Unusual fossiliferous concretions from lacustrine deposits in the lower Jurassic Moenave Formation in St. George, Utah, USA: implications for ancient fish mass mortalities
Allison R. Vitkus, Karen Chin, James I. Kirkland, Andrew R.C. Milner, Edward L. Simpson, Eric T. Ellison
PALAIOS
.... The shapes of the cylindrical concretions were likely influenced by wave action/oscillatory flow, while the patchy shapes of the flat concretions likely reflect...
2020