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The AAPG/Datapages Combined Publications Database
Showing 1,097 Results. Searched 200,357 documents.
A shallow velocity model building using full-waveform inversion on 3D onshore dataset
Young Seo Kim, Jewoo Yoo, Tong Fei, Ali Almomin
International Meeting for Applied Geoscience and Energy (IMAGE)
... velocity model to minimize time difference of the first arrivals between field and synthetic data. At the second stage, we perform traveltime-oriented FWI...
2022
Abstract: Automatic High-Density Constrained Velocity Picking; #90211 (2015)
Emil Blias
Search and Discovery.com
.... A velocity model, beyond its initial purpose to obtain a seismic stack, is used for time and depth imaging, AVO analysis and inversion, pore pressure...
2015
Refraction tomography at the Nova Ni-Cu mine
Ian James, Graeme Hird, Andrew Fitzpatrick
Petroleum Exploration Society of Australia (PESA)
... are applied to account for the near-surface variations in refractor velocity and depth. This was performed using several methodologies, from layer-based...
2019
An Interpreter's Guide to Improvements in Depth Imaging through Model-Based Velocity Estimation and Refinement
Andy Furniss
Petroleum Exploration Society of Australia (PESA)
...An Interpreter's Guide to Improvements in Depth Imaging through Model-Based Velocity Estimation and Refinement Andy Furniss PESA Journal No. 27 (1999...
1999
Sensitivity analysis of acoustic waveform inversion to velocity anomalies in the near-surface using the Frchet derivative
Ao Cai, Colin A. Zelt
International Meeting for Applied Geoscience and Energy (IMAGE)
... anomalies, whereas nonlinear traveltime tomography (TT) is known to be more sensitive to high velocity anomalies than low velocity anomalies because...
2022
Analysis of the impact of demigration on traveltime-based reflection full-waveform inversion
Hong Liang, Houzhu (James) Zhang, Hongwei Liu
International Meeting for Applied Geoscience and Energy (IMAGE)
... provided by conventional FWI is usually limited to the penetration depth of diving waves and refractions. To resolve velocity update for deeper target...
2022
Angle Gathers for Gaussian Beam Depth Migration, #41593 (2015).
Samuel Gray
Search and Discovery.com
... ([email protected]) Abstract Migrated common-image-gathers (CIG’s) are of central importance to prestack depth migration. They allow seismic velocity estimation...
2015
High-End Model Building Techniques for Revealing a Pre-Carbonate Reservoir Offshore East Natuna Basin, Indonesia
Jun Wang, Yonghe Guo, Yitao Chen, Muhammad Nauvall Juliansyah, Nick Crabtree
Indonesian Petroleum Association
... difficulties for conventional raybased reflection travel-time tomography. Figure 3 - Initial velocity and refraction energy penetration analysis (Depth...
2023
Abstract: Kirchhoff Prestack Time Migration with Angle Domain Common Image Gathers; #90174 (2014)
Jianhua Pan, Robert Tilson, Gerry Schlosser, and Elvis Floreani
Search and Discovery.com
... the traveltime relations with a constant background velocity. With a constant background velocity, source-rays and receiver-rays are straight...
2014
Seismic Refraction Data from Sunda Shelf
Robert E. Houtz , Dennis E. Hayes
AAPG Bulletin
... to develop velocity functions with least-squares linear regressions between layer velocity and the vertical one-way traveltime to the midpoint of the layer...
1984
Abstract: Near Surface and Anisotropy Modeling Strategies for Fast-Track Land Depth Imaging; #90319 (2018)
Ernesto Sandoval-Curiel, Daniele Colombo
Search and Discovery.com
... near-surface modelling by generating velocities in depth, together with long-, medium- and short-wavelength static corrections, reflection velocity...
2018
Application of Full Waveform Inversion to Resolve an Eroded Shallow Carbonate Platform, North Madura, East Java, Indonesia
David Cavalin, Nurrul Ismail, Tom Paten, Kola Agbebi, Dave Lim
Indonesian Petroleum Association
... frequencies of the recorded data to drive a more complex velocity model update technique: Full Waveform Inversion (FWI). Standard traveltime...
2019
Abstract: Target-Oriented Imaging for Continous Seismic Reservoir Monitoring; #90319 (2018)
Hongwei Liu, Mustafa Al-Ali
Search and Discovery.com
... use the NMO velocity defined at the target horizon to derive the initial operators. The principle of equal-traveltime affirms that the traveltimes...
2018
Abstract: Tomographic Reflected-Wave FWI Using Time Lag; #90254 (2016)
Geoff Clark, Yilong Qin
Search and Discovery.com
...-velocity anomaly. So velocity model from ray-based traveltime tomography might not be reliable to be used for RTM or serve as a starting model for FWI...
2016
An Interpreter's Guide to Improvements in Depth Imaging Through Model-Based Velocity Estimation and Refinement
Andy Furniss
Indonesian Petroleum Association
... the error in traveltime within each layer. For example, in Figure 12, the residual time delay observed at point A is an accumulation of velocity and depth...
2000
Imaging Complex Structures in Colombia Full Wave Equation Migration Approach
Hector A. Alfonso, Luis E. Rojas, Weizhong Wang, Jie Zhang, Oz Yilmaz
Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)
... is consistent with the rms velocity field, the interval velocity field from the velocity volume in depth also exhibits the structural behavior...
2008
Improve Kirchhoff depth imaging using full-wave-equation traveltimes
Yongzhong Wang, Yang He, Alex Yeh, Faqi Liu, Bin Wang, Carlos Caldern
International Meeting for Applied Geoscience and Energy (IMAGE)
...-based traveltime Kirchhoff depth migration is superior to the conventional ray-based Kirchhoff depth migration in complex areas with large velocity...
2023
VSP – The Link Between Geology and Geophysics, by Ronald C. Hinds and Richard Kuzmiski, #40552 (2002).
Search and Discovery.com
2002
Time-Lapse Refraction Seismic I: A Complementary Monitoring Method?
Martin Landrø, Lasse Amundsen
GEO ExPro Magazine
... diving waves in a medium where the velocity increases linearly with depth. energy is sent back to the surface at the critical V0 = 2,000 m/s and two...
2017
ABSTRACT: Depth Conversion for Stacked Reservoirs in Tertiary Clastics; #90017 (2003)
Christian Höcker
Search and Discovery.com
... in Tertiary clastics is usually addressed in a rather simplistic fashion. Functions relating 2-way traveltime to depth are used and deviation from...
2003
Premigration attenuation analysis and mapping to image domain by weighted migrations
Yonghe Sun, Chunling Wu, Mark Fan, Zhemin Tan
International Meeting for Applied Geoscience and Energy (IMAGE)
... for spatially varying Q. The drawbacks of the approach include workflow complexity and spectral distortions by depth migrations. We propose picking...
2022
Unlocking subsurface complexity: Sparse ocean-bottom node and full-waveform inversion for northern Green Canyon, Gulf of Mexico
Kate Glaccum, Denes Vigh, Yao Yu, Eray Kocel, Bing Bai, Di Chen, Hongyan Li, Kevin Lyons
International Meeting for Applied Geoscience and Energy (IMAGE)
... in the starting velocity model. The effective depth penetration of this model update needed to reach the full depth record for which imaging and earth model...
2022
Abstract: Turning-Ray Tomography and Tomostatics; #90224 (2015)
Babatunde Arenrin, Gary Margrave, and John Bancroft
Search and Discovery.com
... tomography is a good tool for estimating near surface velocity structure, especially in areas where conventional refraction statics fail...
2015
P-wave velocity inversion with average velocity analysis method
Yan Yuefeng, Jing Shaodong, Wang Yingwei, Zhong Chuhan
International Meeting for Applied Geoscience and Energy (IMAGE)
..., the application of P-wave velocity is more significant. It is shown that Poisson’s ratio is sensitive to the wavelength (W)/depth (D) relationship...
2024
Abstract: Salt Shape Tomography; #90254 (2016)
Patrice Guillaume, Olivier Hermant, Stanislaw Warzocha
Search and Discovery.com
... contrasts on depth-migrated common image point gathers. In the multi-layer approach, the sharp velocity contrasts are introduced as layer boundaries. Using...
2016