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The AAPG/Datapages Combined Publications Database
Showing 1,097 Results. Searched 200,293 documents.
Value of conventional PS-wave velocity analyses for PSDM of deep-water OBS data
James Gaiser, James Simmons, Moacyr de Souza Bezerra
International Meeting for Applied Geoscience and Energy (IMAGE)
... provides a valuable initial S-wave model of the shallow overburden for PS-wave PSDM. used to establish a depth velocity model to perform normal moveout...
2022
Seismic Stratigraphy of Veracruz Tongue, Deep Southwestern Gulf of Mexico
Allen J. Bertagne
AAPG Bulletin
..., Deep Western Gulf of Mexico Cores can be correlated with seismic reflections if the velocity of sediments vs. two-way traveltime (or depth) at the core...
1984
Abstract: Imaging Scattered Seismic Energy in Alberta Oil Sands; #90187 (2014)
Andrew V. Barrett
Search and Discovery.com
... of the anisotropy and the curved raypaths of the depth-dependent velocity. Examples A prestack Kirchhoff time migration module which outputs a set...
2014
Abstract: First-Arrival TomoStatics and Residual Statics for Near-Surface Corrections; #90211 (2015)
Jie Zhang, Oz Yilmaz, and Nanxun Dai
Search and Discovery.com
... roles. For processing land data from mountainous areas, using the first-arrival traveltime tomography approach to resolve the near-surface structures...
2015
Long-Offset Approximations to NMO Function for a Layered Subsurface
E. Blias
Search and Discovery.com
.../depth ratio. Conventional velocity analysis uses hyperbolic approximation for the reflection traveltimes: t( x) 2 T02 x 2 VRMS (1) Here T0...
Unknown
Long-Offset Approximations to NMO Function for a Layered Subsurface
E. Blias
Search and Discovery.com
.../depth ratio. Conventional velocity analysis uses hyperbolic approximation for the reflection traveltimes: t( x) 2 T02 x 2 VRMS (1) Here T0...
Unknown
Traveltime Computations for Locating the Source of Micro Seismic Events and for Forming Gridded Traveltime Maps
John C. Bancroft
Search and Discovery.com
... a spherical wavefront. The raypath and gridded traveltime estimations assume that the local velocity in the area defined by the defined times is constant...
Unknown
Traveltime Computations for Locating the Source of Micro Seismic Events and for Forming Gridded Traveltime Maps
John C. Bancroft
Search and Discovery.com
... a spherical wavefront. The raypath and gridded traveltime estimations assume that the local velocity in the area defined by the defined times is constant...
Unknown
Cross-Well Seismology: A New Production Tool
B. N. P. Paulsson, R. T. Langan
Indonesian Petroleum Association
... traveltimes. The traveltime inversion is nonlinear because the raypaths, as well as the traveltimes, are functions of the velocity field. A common approach...
1988
Abstract: AVAZ Inversion for Anisotropy Parameters of a Fractured Medium; #90174 (2014)
Faranak Mahmoudian, Gary F. Margrave, and Joe Wong
Search and Discovery.com
... both for the velocity analysis and depth migration. Table 1: HTI anisotropy parameters for the reference system in Figure 1, A13 is density...
2014
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: Full-Waveform Inversion of Field Data in the Foothills: Results and Challenges with Long-Offset Seismic; #90172 (2014)
Andrew J. Brenders, R. Gerhard Pratt, Sylvestre Charles
Search and Discovery.com
...-frequency sensors, could potentially yield accurate, high-resolution velocity models when processed by Waveform Tomography (traveltime tomography followed...
2014
Joint inversion of first-arrivals with full waveform inversion: improving the near-surface model for depth imaging the Marcellus shale of Bradford County, PA
Search and Discovery.com
N/A
Low-frequency data reconstruction for full-waveform inversion
Ramzi Djebbi, Maiza Bekara, Jaime Ramos-Martinez, Nizar Chemingui
International Meeting for Applied Geoscience and Energy (IMAGE)
... Inline (km) 0 Depth (km) 0 background obtained at the early stages of the inversion strategy. (a) Velocity (km/s) 5 4.8 (b) 1.5 (c) Figure...
2022
ABSTRACT: Interpretation of Continuous-Offset Seismic Data in Central California Margin, by Nathaniel E. Putzig and Alan R. Levander; #91035 (2010)
Search and Discovery.com
2010
Acquisition and Ananlysis of Wide-Angle Reflection and Refraction Seismic Data
Paul L. Stoffa
Circum Pacific Council Publications
... seismic coverage with expanded partial apertures is obtained along the seismic line. These seismic data will result in improved velocity-depth...
1989
Deep Dix: Enhancing interval velocity model estimation through adversarial regularization
Joseph Stitt, Robert Clapp, Biondo Biondi
International Meeting for Applied Geoscience and Energy (IMAGE)
... needed for seismic depth conversion. The relationship between RMS velocity (V ) and interval velocity (v) for a stratified v(z) earth can be expressed...
2023
Abstract: TTI Anisotropic Depth Migration: Which Tilt Estimate Should We Use?; #90211 (2015)
Francois Audebert and Volker Dirks
Search and Discovery.com
...-way traveltime along the normal ray, the apparent slowness (traveltime gradient) at the emergence point, and the apparent NMO velocity, Vnmo (related...
2015
Estimate near-surface velocity with reversals using deep learning and full-waveform inversion
Yong Ma, Xu Ji, Weiguang He, Tong Fei
International Meeting for Applied Geoscience and Energy (IMAGE)
... domain for both training and prediction. In this way, we avoid domain conversions between time and depth in DNN. This timedomain velocity profile can...
2022
The impact of seismic nodes on enhancing subsurface imaging for mining A case study over the Tamarack Nickel field
Eamonn Murray, Andrew Stone, Celina Giersz, Amine Ourabah, Brian Bengert
International Meeting for Applied Geoscience and Energy (IMAGE)
... that the difference between the input and synthetic first break picks are minimized. A P-wave velocity model of the nearsurface is output, to a depth limited...
2024
Subsurface Characterizaton Using Microseismic Velocity, Attenuation, and Ansiotrophy Tomography in a Geothermal Field
Ahmad Syahputra, Andri Dian Nugraha, Rachmat Sule, Sri Widiyantoro
Indonesian Petroleum Association
... function. Figure 3 - Horizontal slice of 3-D tomogram at depth 1 km near top reservoir. There are six tomograms; pertubation velocity of P-wave...
2014
Application of VTI PSDM for imaging carbonate structures
Seyed Yaser Moussavi Alashloo, Deva Ghosh, Yasir Bashir, Amir Babasafari
Geological Society of Malaysia (GSM)
... into prestack depth imaging. The general workflow for Kirchhoff PSDM is illustrated in Fig. 1 which in this study, a new algorithm for traveltime computing...
2018
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
Estimation of Seismic Attenuation in the Delaware Basin Using Peak Frequencies
Małgorzata Drwiła, Leo Eisner, Zuzana Jechumtalová, Denis Anikiev, Randy Keller
Unconventional Resources Technology Conference (URTEC)
... (Keller et al., 1980). The sediments above the basement mainly consist of Paleozoic clastic rocks that include carbonates and evaporates. While velocity...
2018
Key Technologies for Processing of Seismic Data in Gas Cloud Area
Search and Discovery.com
N/A