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The AAPG/Datapages Combined Publications Database
Showing 20,863 Results. Searched 200,639 documents.
Revealing the discontinuities by 3D prestack diffraction separation and imaging
Chuangjian Li, Suping Peng, Xiaoqin Cui, Peng Lin
International Meeting for Applied Geoscience and Energy (IMAGE)
.... With the NMO velocity, the 3D NMO equation can be written as follows (Levin, 1971): 2 t(S,R 0 ) t 0 2 2 hx + hy v 2 NMO (m0 , t 0 , 0 ) , (1...
2022
Detection and suppression of strong energy interference waves within the black triangle using a data-driving self-adaptive frequency-decomposition approach
Haifeng Chen, Xiangyang Li, Zhongping Qian, Pengyuan Sun, Xiaoying Qin, Dingyu Xiong
International Meeting for Applied Geoscience and Energy (IMAGE)
..., acoustic interference, and surging wave noise, but are not very effective for the continuously distributed strong noise within the "black triangle...
2024
Abstract: Dielectric Permittivity of Clay Adsorbed Water: Effect of Salinity; #90172 (2014)
Sanaa Aqil, Douglas R. Schmitt
Search and Discovery.com
... study focuses on radar wave behavior through clays in close proximity with salt. This is examined by laboratory measurements of the ‘dielectric...
2014
Imaging in Complex Environments Common Reflection Angle Migration
Graham A. Winbow
Indonesian Petroleum Association
... from the form of a typical velocity model. Thus more computationally intensive approaches such as Wave Equation Migration are not necessarily required...
2007
Seismic Foldout: Revealing a Promising New Play Concept in the Salar Basin, Offshore Canada
Yermek Balabekov, Susana Tierrablanca, Sriram Arasanipalai, Nizar Chemingui, PGS
GEO ExPro Magazine
... RELIABLE EARTH PROPERTIES Using a wave equation parameterised in terms of velocity and reflectivity removes the need for a density assumption...
2023
Detecting Fracture Zones in the Austin Chalk Using Seismic P- Wave Data
Ilyas Najmuddin
Houston Geological Society Bulletin
...Detecting Fracture Zones in the Austin Chalk Using Seismic P- Wave Data Ilyas Najmuddin 2001 22 27 Frequency data derived from the seismic P-wave...
2001
1.2 Seismic Stratigraphy: 1.2.2 Unconformities: High Relief Topography on the Jurassic Unconformity (Alabama)
J. R. English and J. S. Oslund
AAPG Special Volumes
... and amplitude changes in the unconformity event. Conversely, frequency balancing and wave equation migration are necessary to ensure the best possible...
1983
Abstract: Structurally-Consistent Interval Velocity Variation with Azimuth; #90187 (2014)
Darren Schmidt, Alicia Veronesi, Chris Davison, and Jeff Durand
Search and Discovery.com
... be observed on P-wave seismic data. When the data are sorted into Common-Offset, Common-Azimuth (COCA) gathers, a characteristic sinusoidal reflection time...
2014
Modeling Floodplain Deposits; #50628 (2012)
Irina Overeem, James Syvitski, and Albert Kettner
Search and Discovery.com
...-based principles. Sediment flux is described with a modified Exner equation by separate erosion and sedimentation components. Erosion flux along...
2012
4D batch FWI Sampling the null-space and random matrix theory
Madhav Vyas, Simon Luo, Esteban Díaz
International Meeting for Applied Geoscience and Energy (IMAGE)
... theoretical background and heuristic explanation for why the proposed solution works. Null Space & Random Matrix Theory Let F be the wave equation modeling...
2024
Modelling Exchange of Natural Trace Sediments Between an Estuary and Adjacent Continental Shelf
Shu Gao, Michael Collins
Journal of Sedimentary Research (SEPM)
... dispersion by particle size and wave state: Journal of Geology, v. 75, p. 612-634. OTVOS, E.G., 1965, Sedimentation-erosion cycles of single tidal period...
1992
Enhancing full-waveform inversion with a deep-learning approximated inverse Hessian: A field data application
Mustafa Alfarhan, Matteo Ravasi, Fuqiang Chen, Tariq Alkhalifah
International Meeting for Applied Geoscience and Energy (IMAGE)
... on linearizing the wave equation, which allows us to view the FWI gradient g as the migration of the data residual ∆d (the difference between...
2024
A prior regularized 3D full-waveform inversion using 2D generative diffusion models
Fu Wang, Tariq Alkhalifah, Xinquan Huang
International Meeting for Applied Geoscience and Energy (IMAGE)
..., F is the wave equation operator (like that for the acoustic wave equation with constant density), and R denotes an implicit or explicit regularization...
2024
Abstract: Near-Seabed Velocity Modeling Techniques of Pre-Stack Depth Migration for Shallow Water Marine Data; #91209 (2025)
Wang Binggang, Ding Chengzhen, Yu Ming, Chen Xin, Song Jiawen, Chen Yingpeng, Hu Xin, Gao Jiangtao, Dong Qingyu, Zhang Dan, Cheng Hu, Zhang Ran, Wang Xi, Kang Xupeng
Search and Discovery.com
... the topography: wave-equation datuming of land data with rugged acquisition topography. Geophysics, 1997, 62(5):1558-1569. [9] Fang Yong, Yu Liang, Li Xue...
2025
Multicomponent Seismic Technology Assessment of Fluid-gas Expulsion Geology and Gas-hydrate Systems: Gulf of Mexico
B. A. Hardage, P. E. Murray, R. Remington, M. De Angelo, D. Sava, H. H. Roberts, W. Shedd, J. Hunt Jr.
AAPG Special Volumes
... strata. Our ongoing work uses a different data-processing strategy based on common-receiver trace gathers that eliminate the need to do wave-equation...
2009
Pengiraan nilai Penanda Mutu Batuan (RQD) menggunakan kaedah analisis spektral gelombang permukaan (IN MALAY), Rock Quality Designation (RQD) computation using the Spectral Analysis of Surface Waves method
Suharsono, Abdul Rahim Samsudin, Abdul Ghani Rafeek
Geological Society of Malaysia (GSM)
... to compute the RQD values using the following equation, RQD (%) = 100(1-δ), where δ= and Vsβ and Vsμ are the shear wave velocities derived from the SASW...
2006
Direct Hydrocarbon Indications Using Seismic Amplitude Variations with Offset
William J. Ostrander
AAPG Special Volumes
... substantially reduces P-wave seismic velocity (Vp). This is accompanied by a minor increase in the S-wave seismic velocity (Vs). Because Poisson's ratio...
1987
Abstract: Estimation of Q-factor and Phase Velocity Using the Recovered Stress-strain Relaxation Spectrum; #90172 (2014)
Dali Zhang, Michael P. Lamoureux, Gary F. Margrave
Search and Discovery.com
... wave propagating in a homogeneous isotropic viscoelastic medium with constant material properties. The equation of motion and the relation between...
2014
Chalk porosity and sonic velocity versus burial depth: Influence of fluid pressure, hydrocarbons, and mineralogy
Ida L. Fabricius, Lars Gommesen, Anette Krogsboll, Dan Olsen
AAPG Bulletin
... effect differs between P-wave and shear velocity so that smectite-bearing chalk has a high Poisson's ratio in the water-saturated case, but a low...
2008
Physical Processes in the Ocean: Part 2: Relation of Oceanography to Sedimentation: PART 1
R. H. Fleming, Roger Revelle
AAPG Special Volumes
... of isolation of the water and the effects of the local external agencies. Movements in the ocean can be considered as turbulent motion or wave...
1939
A strategy for acoustic impedance direct inversion in depth domain
Ruiqian Cai, Chengyu Sun, Shizhong Li
International Meeting for Applied Geoscience and Energy (IMAGE)
...-domain synthetic seismogram, respectively. Assuming that W is the equivalent kernel matrix of wavelet, equation (1) can be expressed as (2) W rh...
2022
Application of thermal maturity driven elastic rock-physics model for marine Ordovician Goldwyer formation, Canning Basin
Partha Pratim Mandal, Rob Ross, Santosh Kuppens, Ask Jakobsen, Joel Sarout
International Meeting for Applied Geoscience and Energy (IMAGE)
... moduli using a differential effective medium model. The Gassmann equation is used for fluid substitution and Backus averaging is used to upscale seismic...
2022
Cost Study for Offshore Exploratory Drilling Operation
Saifullah, Septoratno Siregar, Pudjihanto Suwarno
Indonesian Petroleum Association
... exploratory drilling operations depend on many variables, e.g. location remoteness level, water depth, total depth, formation geologic properties, sea wave...
1996
Application of S-Wave Seismic Data to Biogas Reservoir Evaluation in Sanhu Area
Qiao Shi, Wei Tan, Junyong Zhang, Jiru Guo, Yuzhen Wang, Chang Tang, Weiguang Liu
International Meeting for Applied Geoscience and Energy (IMAGE)
...Application of S-Wave Seismic Data to Biogas Reservoir Evaluation in Sanhu Area Qiao Shi, Wei Tan, Junyong Zhang, Jiru Guo, Yuzhen Wang, Chang Tang...
2021
A New Phase Diagram for Combined-Flow Bedforms
Mauricio M. Perillo, James L. Best, Marcelo H. Garcia
Journal of Sedimentary Research (SEPM)
...) Combined-flows, which involve a combination of unidirectional and wave-induced oscillatory flow, are omnipresent in coastal and lacustrine environments...
2014