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The AAPG/Datapages Combined Publications Database
Showing 1,097 Results. Searched 200,293 documents.
Efficient and accurate velocity building from Gramian-constrained multiphysics reflection and transmission data
Jide Nosakare Ogunbo
International Meeting for Applied Geoscience and Energy (IMAGE)
... of two different data sets. The Gramian constraint maintains a linear correlation between velocity models from the two different data set, bolstering...
2022
ABSTRACT: Seismic Velocity Models for Heat Zones in Athabasca Tar Sands, by L. R. Lines, J. D. Covey; #91003 (1990).
Search and Discovery.com
1990
Abstracts: Application of CSP Gather Modeling for Determination of Velocity Smoothing Operator for Prestack Kirchhoff Depth Migration; #90173 (2015)
Hassan Khaniani and John C. Bancroft
Search and Discovery.com
... preserving Kirchhoff migration: a traveltime based strategy: Stud. geophys. geod., 46, 193−211 Gray, S., 2000, Velocity smoothing for depth migration...
2015
Abstract: Wavefront Picking for 3D Tomography and Full-Waveform Inversion; #90319 (2018)
Abdullah A. Theyab
Search and Discovery.com
... controling (QC) seismic firstbreak traveltime picks is critical for a successful tomographic inversion and maturation of a reliable near surface solutions...
2018
High-Resolution Anisotropic Earth Model Building on Conventional Seismic Data Using Full-Waveform Inversion: an Offshore Australia Case Study
Bee Jik Lim, Denes Vigh, Stephen Alwon, Saeeda Hydal, Martin Bayly, Chris Manuel, Dimitri Chagalov, Gary Hampson, Dimitri Bevc
Indonesian Petroleum Association
..., the initial starting model was derived from a smooth version of a reflection traveltime tomography velocity field derived from a depth migration workflow...
2014
Accelerated Kirchhoff depth migration on CPU-GPU heterogeneous computing systems
Yujin Liu, Hongwei Liu, Yi He, Fuhao Qin, Yue Du
International Meeting for Applied Geoscience and Energy (IMAGE)
... be regarded as two traveltime tables or traveltime volumes. There are many different implementations of Kirchhoff depth migration, but they usually have...
2022
Abstract: To TTI or not to TTI? Semi-Automated 3D Tomographic Velocity Analysis in the Canadian Foothills: A Case History; #90211 (2015)
Sylvestre Charles, David Mitchell, Rob Holt, Jiwu Lin, and John Mathewson
Search and Discovery.com
... study, we evaluate how velocity model building strategy affects imaging in the Canadian Foothills Thrust Belt. Two depth imaging processing techniques...
2015
Velocity and Velocity
M. Al-Chalabi
Petroleum Exploration Society of Australia (PESA)
.... Nonuniqueness of velocity-depth combinations that satisfy the traveltime data. 5. Subjectivity in flatness of events in CMP/CRP gathers and in other...
2000
Abstract: Near Surface Imaging by Joint Traveltime and Q-Factor Inversion; #90319 (2018)
Aldo Vesnaver, Pier Paolo Bruno, Rongzhi Lin, Jinyeob Na
Search and Discovery.com
...Abstract: Near Surface Imaging by Joint Traveltime and Q-Factor Inversion; #90319 (2018) Aldo Vesnaver, Pier Paolo Bruno, Rongzhi Lin, Jinyeob Na...
2018
Wave equation traveltime Kirchhoff with real data applications
Hu Jin, Vladimir Bashkardin, Petr Jilek, Chandan Kumar, Han Liu, John Etgen, Madhav Vyas, Ganyuan Xia
International Meeting for Applied Geoscience and Energy (IMAGE)
... for the traveltime calculation are comparable in quality. We see slight depth shifts in the WETK images that used 4Hz waves for calculating the traveltimes...
2023
Abstracts: Converted Wave Processing in the EOM Domain; #90173 (2015)
Thais A. Guirigay and John B. Bancroft
Search and Discovery.com
... be redefined as: . (8) From the equation (8), he varies with the trace geometry hs, and hr, but also varies with depth velocity Vc(zo), as Vp can also...
2015
Enhancing the accuracy of DBSCANs first arrival traveltime picking using super-virtual refraction interferometry
Muhammad Awais, Sherif M. Hanafy, King Fahd
International Meeting for Applied Geoscience and Energy (IMAGE)
...), velocity analysis (Alkhalifah and Tsvankin, 1995), and deconvolution (Bell and Sejnowski, 1995). Mainly, first arrival traveltime picking techniques...
2022
Tomographic Velocity Images by Artificial Neural Networks
Search and Discovery.com
N/A
ABSTRACT: Multiple suppression by the CRS technique; #90051 (2006)
Juergen Pruessmann, Martin Tygel, Fernando Gamboa, Radu Coman
Search and Discovery.com
... from a subsurface model, or from seismic data attributes. Such information is required in the case of land data, where high -velocity rocks may...
Unknown
Analog Model and Synthetic Seismogram Studies of Long Range Refraction Method: ABSTRACT
Stanley J. Laster, Richard Schell, Milo M. Backus
AAPG Bulletin
... 1772 47 9. (September) Refraction mapping of a simple anticline in a high velocity halfspace overlain by low velocity overburden in an analogue model...
1963
A fast sweeping method based on coordinate transformation for eikonal equation on unstructured triangular meshes
Xin Chen, Danping Cao, Xin Fu
International Meeting for Applied Geoscience and Energy (IMAGE)
... of velocity, and we set 𝐺 = (0,0.3) in the example. The analytical solution of traveltime is 𝑇= 𝑎𝑟𝑐𝑐𝑜𝑠ℎ 1...
2024
Wave scattering by the formation velocity perturbation surrounding a fluid-filled borehole
Zhou-Tuo Wei
International Meeting for Applied Geoscience and Energy (IMAGE)
.... At this time, the scattered field by the velocity variations no longer satisfy the first-order linear approximation condition. From Figure 5...
2022
Volume-constrain first arrival tomography based near surface modeling and its application
Naijian Wang, Zhihui Yan, Qingpo Ma, Wei Wu, Yunfei Zu, Yonggui Hu
International Meeting for Applied Geoscience and Energy (IMAGE)
... processing in time domain, the static corrections calculated with depth-velocity curve or refraction method could usually achieve good results. By converting...
2022
Abstract: Simultaneous P-P and P-S Waveform Inversion Algorithm Using Pre-Stack Time Imaging Method ; #90187 (2014)
Hassan Khaniani, John C. Bancroft, and Eric von Lunen
Search and Discovery.com
... in Figures (3a & 3b). The initial velocity for inversion is obtained using a linear increment (green dotted line) of the well log (solid blue curve...
2014
New perturbation-based traveltime approximation for elastic VTI media
Shibo Xu, Alexey Stovas, Xingguo Huang
International Meeting for Applied Geoscience and Energy (IMAGE)
... traveltime, the change in the velocity ratio does not affect the error trend. However, for the approximations of the S-wave traveltime, the decrease...
2022
Abstract: High-Resolution Seismic Velocity Structure of the Shallow Porcupine Basin From Traveltime Tomography and Waveform Inversion of Long-Streamer Data; #90310 (2017)
Manel Prada, François Lavoué, Brian O'Reilly, Sergei Lebedev, Yanhua Yuan, Clàudia Gras
Search and Discovery.com
...Abstract: High-Resolution Seismic Velocity Structure of the Shallow Porcupine Basin From Traveltime Tomography and Waveform Inversion of Long...
2017
CMP domain near-surface velocity model building based on deep learning
Yihao Wang
International Meeting for Applied Geoscience and Energy (IMAGE)
... is an essential step. Accurate near-surface velocity model helps to improve static correction and deeper structure imaging. First arrival traveltime...
2022
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
... of Calgary. Theory The linear expression for P phase velocity in geophysics discipline comes from the work of Backus (1965) as: v 2 n cijkl ni...
2015
Abstract: Kirchhoff Imaging with Adaptive Greens Functions for Compensation for Dispersion, Attenuation, and Velocity Imprecision; #90187 (2014)
Andrew V. Barrett
Search and Discovery.com
...Abstract: Kirchhoff Imaging with Adaptive Greens Functions for Compensation for Dispersion, Attenuation, and Velocity Imprecision; #90187 (2014...
2014
The calculation of first-arrival P-wave traveltime for attenuating TTI media
Mengxiu Wang, Jingyi Chen, Zhengcong Zhao, Kaiyuan Ji, Shaoying Chang
International Meeting for Applied Geoscience and Energy (IMAGE)
... independent of the quasi S-wave attenuation coefficient As 0 and the impact of the S-wave velocity vso on the traveltime is weak and negligible. Thus, Hao...
2022