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The AAPG/Datapages Combined Publications Database
Showing 19,411 Results. Searched 200,616 documents.
Anisotropic PP and PSv Prestack Depth Migration of 4C (OBC) Seismic Data, Offshore Trinidad
Tony Johns
Search and Discovery.com
.... That is, a model that produces flat common image point (CIP) gathers across positive and negative offsets, for optimized stack response...
Unknown
Anisotropic PP and PSv Prestack Depth Migration of 4C (OBC) Seismic Data, Offshore Trinidad
Tony Johns
Search and Discovery.com
.... That is, a model that produces flat common image point (CIP) gathers across positive and negative offsets, for optimized stack response...
Unknown
Know Before You Go!
Lars Zühlsdorff, Trond Haugland
GEO ExPro Magazine
... of this study is whether careful reprocessing of existing data can save the cost of acquiring new data. Will a New Survey Improve the Image? The first part...
2021
Interpretative PSDM Workflow for Solving Complex Imagery Below Faults and Carbonates Reefs in South Mahakam, Kutai Basin: An Interpreters Point of View
Cepi Muhamad Adam, Nadir Abdoun, Bertrand Duquet, Florent Bertini, Yves Le Stunff
Indonesian Petroleum Association
.... The time demigration allows the expression of the horizons in the invariant time domain. Then, the tomography process extracted the image RMO gathers...
2009
Application of full-waveform inversion to ultra-high-density OBN data at Clair field
Simon Luo, Xukai Shen, Philip Tillotson, Lindsey Smith, Dan Davies
International Meeting for Applied Geoscience and Energy (IMAGE)
.... In addition, although not shown here, stacking the gathers in Figure 6(b) yields a better focused Kirchhoff image as well. Figure 5: Time-converted (a) FWI...
2022
Seismic Modelling in 3D for Migration Testing
Search and Discovery.com
... testing. Such an exhaustive dataset, defined as having no spatial aliasing in either source or receiver gathers, can be extremely large and the efficiency...
2013
Specialized processing of a massive distributed acoustic sensing (DAS) 3D VSP in a producing well
Ali Sayed, Francesca Twynam, Ran Bachrach, Philippe Caprioli, Marcus Holloway, Qingsong Li, Reetam Biswas, Daniel Tebo, Sam Buist
International Meeting for Applied Geoscience and Energy (IMAGE)
... to the surface seismic image. Post-stack least-squares migration in the image domain was used to compensate for illumination effects and further improve...
2023
The Role of Statics Application in the Imaging of Sub-Surface in Fold Belt Areas, #40746 (2011)
Arun Kumar Arya, Bharat Chandra Joshi, Narinder Pal Singh,
Search and Discovery.com
... in this workflow. The data are sorted into common image point (CIP) gathers in the post-migrated domain. The flattening of events in the CIP gathers...
2011
Abstract: Five Dimensional Seismic Data Interpolation; #90171 (2013)
Daniel Trad
Search and Discovery.com
... compares the final image stack and the respective common image gathers without and with interpolation. Figure 3 shows time migration results without...
2013
High frequency refraction/reflection full-waveform inversion case study from North West Shelf offshore Australia
David Dickinson, Fabio Mancini, Xiang Li, Kai Zhao
Petroleum Exploration Society of Australia (PESA)
...-field distortions in both (Kirchhoff) migrated stacks and gathers (Figures 4(a) and 4(b)). Small wobbles in the common image gathers (CIGs) further...
2018
Abstract: Adaptive f-xy Hankel Matrix Rank Reduction Filter to Attenuate Coherent Noise; #90174 (2014)
Nirupama (Pam) Nagarajappa
Search and Discovery.com
.... To overcome this, the input data to the rank reduction filter is re-ordered in a novel scheme, where set of shot gathers with similar propagation...
2014
Enhancing Reservoir Imaging and Monitoring Using Crosswell Seismic
Sanjeev Dogra, Ajay Nalonnil, Bruce Marion
Indonesian Petroleum Association
... (lower Q values in the middle section). AVA inversion of crosswell seismic amplitude vs. angle gathers in the image domain is used to produce images...
2010
Anisotropic depth migration in the Colombian Llanos Foothills as a key to understanding the structure in depth
emamedov
Search and Discovery.com
... model. The program raytraced the velocity model and applied velocity changes to the image gathers. The model interpreter selected the velocity...
Unknown
What Causes those Annoying Stair-Step Artifacts on Coherence Volumes?; #42036 (2017)
Tengfei Lin, Kurt J. Marfurt
Search and Discovery.com
... in a broad incoherent zone rather than in a single sharp image of the fault. Attempted Remedies We evaluated two remedies to this problem, neither...
2017
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
... of the converted-shear-wave (P-SV) mode extracted from 4-C OBC data. In deep water, the P-SV mode creates an image of near-sea-floor strata that has...
2009
Optimized stacking of migrated offset vector tiles for Tengiz PSDM image enhancement
Tianjiang Li, King Sim Lee, Bin Gong, Kai Yang, Kai Zhang, Assem Bibolova, Zhanibek Katrenov
International Meeting for Applied Geoscience and Energy (IMAGE)
... output image gathers were used for the analysis of the azimuthal influences on the migration stack. The azimuthal image optimization workflow...
2022
ABSTRACT: Sensitivity Considerations in Building Velocity Models for the Nile Delta’s Messinian, by El-Bassiony, Ahmed; Eid, Mamdouh; Walker, Chris; Caselitz, Bertrand; ElAmir, Ashraf; Hemdan, Mahmoud; #90141 (2012)
Search and Discovery.com
2012
ABSTRACT: Azimuthal PSDM Residual Moveout Volume Scanning for Fracture Detection in a Structurally Complex Environment, by Sliz, Krzysztof K.; Jiao, Jianwu; #90141 (2012)
Search and Discovery.com
2012
Seismic data interpolation via frequency-constrained 3D inception Unet
Yen Sun, Paul Williamson
International Meeting for Applied Geoscience and Energy (IMAGE)
...) but the inter-cable spacing is typically between 50 and 100m. This may create aliasing artifacts in migrated images and potentially degrade image...
2022
4D Finite Difference Forward Modeling within a Redefined Closed-Loop Seismic Reservoir Monitoring Workflow, #41922 (2016).
David Hill, Dominic Lowden, Sonika, Chris Koeninger
Search and Discovery.com
... to illustrate, in detail, the full-field 4D image-modeling workflow. The results of a Sim-to-Seis workflow are presented first, followed by the results from...
2016
Application of Anisotropic Depth Imaging Onshore
Scott Sutherland, Marianne Rauch-Davies
Unconventional Resources Technology Conference (URTEC)
... image gathers can be successfully flattened across all offsets and azimuth sectors. Sand/shale layers targeted in unconventional settings often...
2017
Thinking in Depth
Jim Durrant
Petroleum Exploration Society of Australia (PESA)
... processing, structures are im aged in the time domain. The p rocessed image may contain distortions from true depth structure w henever lateral velocity vari...
1995
Three-Dimensional Seismic Method: Part 7. Geophysical Methods
Oz Yilmaz
AAPG Special Volumes
... midpoint (CMP) gathers, while in 3-D processing, traces are collected as common-cell gathers (bins). These gathers are used in velocity analysis...
1992
Depth correction using velocity for structure calibration at Leviathan Field, offshore Israel
Yijie Zhou, Brad Christensen, Lin Christianson
International Meeting for Applied Geoscience and Energy (IMAGE)
... and Gross Rock Volume (GRV) estimation. The latest proprietary seismic processing techniques improved the gathers flatness and produced clearer seismic images...
2023
Abstract: The Value of Re-Processing Legacy Onshore Seismic Data with Advanced Workflows; #91209 (2025)
Ahmed S. Barakat, David M. McCarthy, Shady Hassan, Mostafa Khalil, Oleg Khakimov, Khyzer Munir, Andrew Sutherland, Mokhles Ahmed
Search and Discovery.com
... in addition to radon de- multiple, wide azimuth residual move out correction using common image gathers (CIG) and a comprehensive post stack sequence...
2025