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The AAPG/Datapages Combined Publications Database
Showing 1,097 Results. Searched 200,357 documents.
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
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
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
Abstract: Migrating Reflections from the Moho Using a Refraction Velocity Model An Example from the Slave Craton, NWT; #90211 (2015)
Joaquin Aristimuno and Claire Samson
Search and Discovery.com
... a detailed velocity model of the lower crust and upper mantle. A new 2D velocity model under the SNORCLE profile has been deri ved from traveltime...
2015
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
Abstracts: Locating Microseismicity in Three-Dimensionally Heterogeneous Reservoirs; #90173 (2015)
Adam M. Baig, Ted Urbancic, Margaret Seibel, Vladimir Shumila
Search and Discovery.com
... by lithological tops interpreted from seismic cross-sections. Figure 2: A depth view of wavefronts (blue curves) and traveltime field (blue-yellow contours...
2015
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: Interpretation of Natural Fractures from the Traveltime Variation with Source-receiver Azimuth in the Alberta Foothills; #90172 (2014)
Draga A. Talinga, Don C. Lawton
Search and Discovery.com
... determined from dip and strike event traveltime differences are in general similar to the models determined from the velocity ellipse. In addition, the cross...
2014
Abstract: Reflection-based Traveltime Inversion Using Segment Dynamic Image Warping; #91204 (2023)
Lu Liu
Search and Discovery.com
... reconstructs long-wavelength components of the velocity model and achieves a satisfactory depth-domain image for interpreting the geological structures...
2023
ABSTRACT: Multi Focusing Stack Technique for Subsurface Imaging; #90118 (2011)
Sunjay Sunjay
Search and Discovery.com
... that facilitates the estimation of a velocity model for depth imaging. For these reasons, improving the quality of time imaging is a focus of intensive...
2011
Abstract: Combining Geology and Prestack Seismic for Structural Model Building in the Gaspé Belt (Québec, Canada); #90211 (2015)
Anne Jardin, Martin Bêche, Karine Broto, Dave Saucier, and Donna Kirkwood
Search and Discovery.com
..., and of advanced pre-stack seismic techniques like pre-stack seismic interpretation, traveltime inversion and depth migration, can improve...
2015
Influence of Lithology and Neogene Uplift on Seismic Velocities in Denmark: Implications for Depth Conversion of Maps
Peter Japsen
AAPG Bulletin
... from seismic maps, when velocity information is available from several wells. Velocity is the key in the conversion from seismic traveltime to depth...
1993
Abstracts: Improved Near-surface Velocity Models from 2D Waveform Tomography of Vibroseis First-arrival Data; #90173 (2015)
Brendan R. Smithyman and Ronald M. Clowes
Search and Discovery.com
... volcanic rocks of the study area. Introduction Interpreted near-surface velocity models are presented from inversion of first-arrival traveltime...
2015
Abstract: Velocity Model Building with Weighted Linearized Inversion A VSP Data Case Study; #90187 (2014)
Mingyu Zhang, Richard Kuzmiski, and Zhengsheng Yao
Search and Discovery.com
... there are errors in first arrival picking, linear least squares inversion is used as the tool to determine the velocity model assuming that errors have...
2014
Abstract: Monitoring Active Steam Injection through Time-lapse Seismic Refraction Surveys; #90174 (2014)
Byron M. Kelly and Don C. Lawton
Search and Discovery.com
... to that of 4D reflection profiles. Through reciprocal traveltime analysis, refraction profiles can delineate significant time-shifts within a monitor survey due...
2014
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
Abstract: Reflection Full Traveltime Inversion in the Image Domain; #90319 (2018)
Yue Ma, Tong W. Fei, Yan Wu, Yi Luo
Search and Discovery.com
... accurate velocity model from traveltime information. Many previously published wave equation-based methods, which attempt to automatically invert traveltime...
2018
Resolving DAS versus geophone discrepancies using the DAS transform: A comparative study from the CaMI CCS field research station, Alberta
Ali Sayed, Robert R. Stewart, Marie Macquet, Don Lawton
International Meeting for Applied Geoscience and Energy (IMAGE)
...roved internal consistency and more accurate traveltime picking. We show that the depth and time registration of DAS recording from the CaMI site is consi...
2024
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
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
Anisotropic full-azimuth velocity model building using joint reflection-refraction tomography
Matan Shustak, Itai Sharabi, Orly Kletenik-Edelman, Elive Menyoli, Ike Imala, Ronit Levy, Zvi Koren
International Meeting for Applied Geoscience and Energy (IMAGE)
... that this tomography can provide high-resolution anisotropic velocity models and subsequent accurate depth migration images. The method has been successfully applied...
2022
Determination of Velocity Model by Using NIP-Wave Tomographic Inversion: Application to Synthetic and Real Data
A. Hendriyana, R. Sule, Y. Akbar, L.A. Poerwaka, T.A. Sanny, Sardjito, Waluyo, Adriansyah
Indonesian Petroleum Association
... heterogeneous and appropriate for ray tracing. The velocity is used as first approximation of velocity field for pre-stack depth migration and updates...
2009
Abstract: P-wave and S-wave Near-surface Characterization in Northeast British Columbia (NEBC); #90174 (2014)
Liliana M. Zuleta and Don C. Lawton
Search and Discovery.com
..., 1959; Dufour, 1996) is useful for both depth and velocity determination. The basis of the plus-minus time analysis method lies in the traveltime...
2014
Abstract: Full Waveform Inversion Algorithm using Time Imaging Methods; #90174 (2014)
Hassan Khaniani, John C. Bancroft, Gary F. Margrave, and Eric von Lunen
Search and Discovery.com
... of the PSTM data. The result of the method will be an updated velocity in time that can be used in time to depth conversion. The accuracy...
2014