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The AAPG/Datapages Combined Publications Database
Showing 164 Results. Searched 195,364 documents.
Chart Migrations
Frank A. Roberts
Oklahoma City Geological Society
... parameters of space. We are immediately concerned with the velocity function. Should we use an average overall velocity, a linear or an expotential...
1958
Abstract: Regular Grids Travel Time Calculation A Practical Huygens Wavefront Expansion Approach; #90187 (2014)
Zhengsheng Yao, Mike Galbraith, and Randy Kolesar
Search and Discovery.com
...ound 90. Our second example is a velocity linearly increasing with depth where v0 is 100 and the velocity gradient is 2. The grid size is also one unit...
2014
Abstract: Regular Grids Travel Time Calculation Fast Marching with an Adaptive Stencils Approach; #90187 (2014)
Zhengsheng Yao, Mike Galbraith, and Randy Kolesar
Search and Discovery.com
... itself is a linear approximation and the wavefront is, in general, not a plane wave, especially near the source, a high order scheme in such a case...
2014
Refraction Solutions by Wavefront Targeting: ABSTRACT
Frederick L. Schenck
AAPG Bulletin
...Refraction Solutions by Wavefront Targeting: ABSTRACT Frederick L. Schenck 1963 1775 1776 47 9. (September) Emergent wavefronts can be developed from...
1963
Abstract: Generalized Frames for Gabor Operators in Seismic Imaging; #90172 (2014)
Michael P. Lamoureux, Gary F. Margrave, Peter C. Gibson
Search and Discovery.com
..., a complex geological region is broken up into small regions of nearly constant velocity, and the wavefield is propagated through each region separately...
2014
Abstract: Wavefront Picking for 3D Tomography and Full-Waveform Inversion; #90319 (2018)
Abdullah A. Theyab
Search and Discovery.com
...Abstract: Wavefront Picking for 3D Tomography and Full-Waveform Inversion; #90319 (2018) Abdullah A. Theyab AAPG Datapages/Search and Discovery...
2018
Star: Shallow Time Anomaly Replacement
Michael O. Marcoux, Lee Lu
Southeast Asia Petroleum Exploration Society (SEAPEX)
... by the thickness/ velocity ratio. Thus, the LVT acts as a thin lens would in optics and the effect on a wavefront is to cause a time delay depending...
1982
Application of finite difference eikonal solver for traveltime computation in forward modeling and migration
Amir Mustaqim Majdi, Seyed Yaser Moussavi Alashloo, Nik Nur Anis Amalina Nik Mohd Hassan, Abdul Rahim Md Arshad, Abdul Halim Abdul Latiff
Geological Society of Malaysia (GSM)
.... The migration process can be done for pre-stack or post-stack, 2D or 3D data in time or depth domain. A velocity field is needed as the input for the migration...
2021
Data selection for velocity model estimation using a circular shot OBN survey
Felipe T. Costa, Sergio L. E. F. da Silva, Ammir A. Karsou, Felipe Capuzzo, Roger M. Moreira, Jorge Lopez, Marco Cetale
International Meeting for Applied Geoscience and Energy (IMAGE)
... resulting from the circular shot survey in the depth slice. The application of automatic data selection, combining the eikonal equation and wavefront...
2023
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
... velocity, wavefront velocity, with the source and receiver transducer width comparable to the source-receiver distance. Mah and Schmitt (2001...
2015
Abstract: Seismic Frequency and Stratigraphic Resolution in the Lodgepole Play, by J. A. Andrew; #90952 (1996).
Search and Discovery.com
1996
Abstracts: Attenuating 2D Noise in a 3D World; #90173 (2015)
David C. Henley
Search and Discovery.com
... themselves to various multi-trace processing schemes for estimating and removing linear noises, often based on the apparent velocity of noise events relative...
2015
Outlining Shale Masses By Geophysical Methods
A. W. Musgrave , W. G. Hicks
AAPG Special Volumes
... + at for linear increase in velocity with time. End_Page 130------------------------ Fig. 18. Wavefront chart based on velocity configuration shown...
1968
Abstracts: Near-surface Velocity Model Building and Statics in Permafrost Regions; #90173 (2015)
Tianfei Zhu, Yan Yan, and Jon Downton
Search and Discovery.com
...-velocity zone if the deep velocity is less than the velocity at depth D such as case C in Figure 1. The low-velocity zone in this case can only...
2015
Abstract: Multiple Attenuation Using MultiFocusing Technology; #90224 (2015)
Marianne Rauch–Davies, Alex Berkovitch, Kostya Deev, and Evgeny Landa
Search and Discovery.com
... attribute domain. First, they are predicted according to MF wavefront parameters and then they are subtracted using an adaptive least squares method...
2015
Characterizing the Seismic Response of Naturally Fractured Basement Reservoir in Sumatra Area: Towards an Efficient Seismic Exploration Strategy
Pongga Wardaya, Vida Irine Rossa, Erlangga Septama, Richie Rahmat Pratama, Rusalida Raguwanti
Indonesian Petroleum Association
... wavefront is thinner than the back reflected wavefront. From wave kinematic perspective, since velocity contrast between fracture filling fluid...
2021
DEPTH CONVERSION, Jeremy J. Zimmerman, Search and Discovery Article #40023, 2001
Search and Discovery.com
N/A
Imaging Beneath Complex Structure
K. Larner, B. Gibson, and R. Chambers
AAPG Special Volumes
... an arched and thrust-faulted interface. Wavefront distortion introduced by this feature gives rise to distorted reflections from depth. Even...
1983
Imaging Beneath Complex Structure: Case History: ABSTRACT
Ken Larner, Bruce Gibson, Ron Chambers
AAPG Bulletin
...-faulted interface. Wavefront distortion introduced by this feature gives rise to distorted reflections from depth. Even with interval velocity known...
1981
Finite Difference Modelling: Part IV
Lasse Amundsen, Ørjan Pedersen, Martin Landrø
GEO ExPro Magazine
... interpretation. The exact acoustic velocity at which the wave moves from one point to another depends on the physical properties of the medium. For constant...
2019
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
Getting Something for Nothing: Noise Attenuation in an Aliased World; #41291 (2014)
David C. Henley
Search and Discovery.com
... for improving coherent noise attenuation of a single aliased noise is de-aliasing by application of constant-velocity linear moveout (LMO) prior to estimating...
2014
ABSTRACT: Optimising Seismic Acquisition Through Combined Ray Tracing and Structural Modelling; #90007 (2002)
Stuart C. Bland, Michael C. A. Goodwin
Search and Discovery.com
... are recorded and the optimum survey orientation is chosen. In compressional tectonic settings where wavefront distortion typically occurs at layer...
2002
Prestack Depth Imaging Within the Makassar Straits, Eastern Kalimantan, Indonesia
Chris Willacy, Suryadi Oemar, A. Edy Hermantoro, Paul Gilleran
Indonesian Petroleum Association
.... Thrusting stacks rocks of higher seismic velocity over lower velocity material. Such a velocity contrast results in strong wavefront attenuation...
2000