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The AAPG/Datapages Combined Publications Database
Showing 20,827 Results. Searched 200,293 documents.
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
Estimating elastic wave velocities, attenuation factors, and their frequency dependency by inverting ultrasonic waveforms
Michel M. Nzikou, Alexey Yurikov, Maxim Lebedev, Boris Gurevich
International Meeting for Applied Geoscience and Energy (IMAGE)
... of the source waveform. Equation (1) defines a power law, which is a straight line on bi-logarithmic scale (in Q−1 vs ω coordinates) and thus represents...
2022
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
Organoporosity versus Mineral Matrix Porosity in the Calculation of Reserves in Shale Reservoirs
G. B. Asquith
West Texas Geological Society
... is correct? The Maxwell-Garnett Equation which was designed model large spherical pores in bedded in finer spherical matrix pores (i.e. a vuggy...
2013
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
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
Abstract: Spherical-Wave AVO Modelling in VTI Media; #90211 (2015)
Arnim Haase and Charles Ursenbach
Search and Discovery.com
...Abstract: Spherical-Wave AVO Modelling in VTI Media; #90211 (2015) Arnim Haase and Charles Ursenbach Datapages/Search and Discovery Article #90211...
2015
Travel-time tomography for joint velocity and transducer location estimation
Edan Gofer, Raanan Dafni, Albert Shalumov, Ramon Axelrod, Moshe Oziel, Pinny Chaviv
International Meeting for Applied Geoscience and Energy (IMAGE)
... the skin (Carovac et al. 2011; Zander, 2020). Ray theory expresses the total travel-time, T, of a body wave propagating from a given source, i...
2024
-- no title --
user
Search and Discovery.com
...user Spherical-Wave Computational AVO Modelling in Elastic and Anelastic Isotropic Two-Layer Media Arnim B. Haase and Charles P. Ursenbach University...
Unknown
-- no title --
user
Search and Discovery.com
...user Spherical-Wave Computational AVO Modelling in Elastic and Anelastic Isotropic Two-Layer Media Arnim B. Haase and Charles P. Ursenbach University...
Unknown
Abstract: The Phase Shift Time Stepping Equation and the Marmousi Data Set; #90171 (2013)
Ben D. Wards, Gary F. Margrave, and Michael P. Lamoureux
Search and Discovery.com
... that does not use finite differences. An analytical solution to the acoustic wave equation (Etgen, 1989; Tal-Ezer, 1986) is computed exactly...
2013
Abstract: SS-wave Reflections from P-wave Sources in Azimuthally Anisotropic Media; #90187 (2014)
James Gaiser and Richard Verm
Search and Discovery.com
...Abstract: SS-wave Reflections from P-wave Sources in Azimuthally Anisotropic Media; #90187 (2014) James Gaiser and Richard Verm AAPG Search...
2014
Phase-Ray Maslov Summation: A Complete Finite-Frequency Ray Method
Tianfei Zhu
Search and Discovery.com
... Consider the wave equation in the frequency domain: 2 < Z2 V 2 (x ) < 0. (1) ART seeks an approximate solution to the wave equation in the form...
Unknown
Phase-Ray Maslov Summation: A Complete Finite-Frequency Ray Method
Tianfei Zhu
Search and Discovery.com
... Consider the wave equation in the frequency domain: 2 < Z2 V 2 (x ) < 0. (1) ART seeks an approximate solution to the wave equation in the form...
Unknown
Abstract: Physical Modeling for Azimuthal AVO Over a Simulated Fractured Medium; #90174 (2014)
Faranak Mahmoudian, Gary F. Margrave, and Joe Wong
Search and Discovery.com
... plane (azimuth 90⁰), corrected amplitudes agreed with theoretical amplitudes predicted by the spherical-wave Zoeppritz equation. Acknowledgements We...
2014
Abstracts: An Investigation of Systematic Location Errors of Microseismic Events; #90173 (2015)
Martin E. Nicola, Bernd Milkereit, and Emmanuel Bongajum
Search and Discovery.com
... from wave fields in heterogeneous and homogeneous media. Borehole logs from Sudbury, have been used in a ray algorithm to produce travel time values...
2015
Another Look at the Separation of P- and S-Waves
Jun-Wei Huang
Search and Discovery.com
... be separated completely (figure 1). In practice however, seismograms are only part of the full wave field and thus lack some information for equation (1.4...
Unknown
Another Look at the Separation of P- and S-Waves
Jun-Wei Huang
Search and Discovery.com
... be separated completely (figure 1). In practice however, seismograms are only part of the full wave field and thus lack some information for equation (1.4...
Unknown
Petrophysical Relationship to Predict Synthetic Porosity Log; #41124 (2013)
Thariq Guntoro, Intan Putri, and Ayi Syaeful Bahri
Search and Discovery.com
... of hydrocarbon either gas or oil. By petrophysical relationship, the synthetic log can be estimated. Faust's equation was used to obtain P-wave velocity...
2013
Pore structure and fractal characteristics of Ordovician Majiagou carbonate reservoirs in Ordos Basin, China
Jin Lai, Song Wang, Guiwen Wang, Yujiang Shi, Taiping Zhao, Xiaojiao Pang, Xuechun Fan, Ziqiang Qin, and Xuqiang Fan
AAPG Bulletin
..., or three for planar (fracture), cylindrical, and spherical pores, respectively (Pape and Clauser, 2009; Doveton and Watney, 2014; Saidian et al...
2019
Abstract: Shear Wave Splitting Parameter Estimation Using a Regular Distribution of Azimuths; #90187 (2014)
A. Stanton and M. D. Sacchi
Search and Discovery.com
... in Alberta, Canada that displays the effects of shear wave splitting. Source and receiver coordinates are shown for a single ACP gather in Figure (1...
2014
Q-compensation imaging of anisotropic viscous quasi-acoustic media along wavefield propagation path
Bohan Zhang, Huazhong Wang
International Meeting for Applied Geoscience and Energy (IMAGE)
... spherical wave to obtain the attenuation compensation of the two-way paths (as shown in figure 1). Stability control involves the use of equation (13...
2022