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The AAPG/Datapages Combined Publications Database
Showing 168 Results. Searched 200,357 documents.
Image - Rays and the Treatment of Inhomogeneity in Migration
L. Hatton
Southeast Asia Petroleum Exploration Society (SEAPEX)
... be attributed to the fact that Snell’s law is absent from the Kirchhoff-summation wave equation time migration method, as commonly implemented. It can...
1980
Forward Modeling of Seismic Data: Part 7. Geophysical Methods
George Mellman, Paul A. Kunzinger
AAPG Special Volumes
... Snell's law, and are partially reflected when velocity or density discontinuities are encountered. Traveltimes of reflected arrivals correspond...
1992
Abstract: Accurate Conversion between Offset Image Gathers and Angle Image Gathers, by Jianming Sheng and Chengbin Peng; #90105 (2010)
Search and Discovery.com
2010
Abstract: Physical Testing of the Effect of Tilting on the Reflection Coefficient in an Anisotropic Material; #90172 (2014)
Miryam Ortiz-Osornio, Douglas R. Schmitt
Search and Discovery.com
... angle, and that the fastest the velocity the smallest the critical angle as stated by the Snell’s Law. Therefore we can conclude that azimuthal...
2014
Depth Imaging Through Surface Carbonates: A 2D Example from the Canadian Rocky Mountains; #41554 (2015)
Yong Hua, Don Lawton
Search and Discovery.com
... the final CIGs and migrated section. This code undertakes raytracing honouring Snell’s Law from surface (topography) that is implicit solution...
2015
Abstract: Raypath-Consistent Shear Wave Statics; #90224 (2015)
Raul Cova, David Henley, and Kris Innanen
Search and Discovery.com
...-wave refraction statics. Hence, we need to correct this extra delay to get an optimum stack. Using Snell’s law it is possible to compute...
2015
The Next 100 Years of Energy
Search and Discovery.com
N/A
The Contribution of Simple Seismic Modeling for Reef Distribution Mapping
Soetomo J.A., Bambang Santoso
Indonesian Petroleum Association
... model using Snell's Law and related principles. This is quite adequate for most purposes. To better predict results for certain unusual problems, wave...
1985
Star: Shallow Time Anomaly Replacement
Michael O. Marcoux, Lee Lu
Southeast Asia Petroleum Exploration Society (SEAPEX)
... normals or rays, according to Snell’s law. In many practical instances, the moveout which varies between reflection, the so-called dynamic component can...
1982
Refraction tomography at the Nova Ni-Cu mine
Ian James, Graeme Hird, Andrew Fitzpatrick
Petroleum Exploration Society of Australia (PESA)
... on the ratio of velocities in the two materials (Snell’s Law). The first arrival times for the wavefront to reach each geophone are picked from the seismograph...
2019
Critical Analysis of Stack Seismic Systems
L. E. Nugent, Jr.
AAPG Bulletin
... of Huygen and Fermat concerning wave advancement and minimum time paths, and Snell's law on refraction and reflection. Figure 2 has the same field...
1967
Abstract: 3D, Anisotropic Phase Shift Operators; #90171 (2013)
Robert J. Ferguson and Gary F. Margrave
Search and Discovery.com
... a nd r in the refracted medium, Snell's Law is invoked to get for P-waves to get q SH = 2 2 2 2 2 q ;r =q p I −p1−p2 , (8) q2 (9...
2013
Abstract: 3D, Anisotropic Phase Shift Operators; #90171 (2013)
Robert J. Ferguson and Gary F. Margrave
Search and Discovery.com
... a nd r in the refracted medium, Snell's Law is invoked to get for P-waves to get q SH = 2 2 2 2 2 q ;r =q p I −p1−p2 , (8) q2 (9...
2013
Modeling Tectonic Structures by Synthetic Seismic Construction: Comparison with Local Fold and Thrust Front Development in the Permian Basin Province
Richard J. Erdlac, Jr., Douglas B. Swift
West Texas Geological Society
... and follows Snell’s Law to the surface, where the accumulated travel time is recorded at the surface emergent point. If a ray exists from one...
2000
Modern Seismic Imaging and Basin Modeling Reveals Sub-Basalt Hydrocarbon Potential of Offshore India, #10473 (2012)
Roberto Fainstein, Somen Mishra, Rajesh Kalra, Jyoti Shah, Munukulta Radhakrishna, Bjorn P. Wygrala
Search and Discovery.com
... the high velocity basalt as predicted by Snell’s law Snell s Wave propagation through basalt lowers wavelet frequency Many sub-basalt...
2012
Crosswell Seismic: Review of Field Operations, Survey Planning and Case History
Jeff Meyer, Randy Evans, Robert Martin, Cynthia L. Welch
West Texas Geological Society
... of acoustic energy traveling along these paths according to governing geophysical laws such as Snell’s Law. Survey planning can become quite complex in highly...
2002
SOUTH ELK BASIN FIELD—A CASE HISTORY
Eric A. Bikis, Tom D. Anderson
Montana Geological Society
... was assumed and Snell's law was used to calculate raypath bending at velocity boundaries. Fault plane boundaries were assumed to be non...
1986
A case study using FWI to image pre-Messinian target in the East Mediterranean Sea
Jyoti Kumar, Marcus Bell, Tamer Darwish, Mai Ahmed, Mahmoud Ahmed, Moataz Ahmed
International Meeting for Applied Geoscience and Energy (IMAGE)
...-lengths of homogeneities, such as those found within the complex Messinian layer, cannot be represented by rays and Snell’s Law, waveform-based back...
2022
Abstract: Interferometric Approach to Complete Refraction Statics Solution; #90187 (2014)
Valentina Khatchatrian and Mike Galbraith
Search and Discovery.com
... model is obtained, using Snell’s law. Initial static corrections to replace weathering velocity with replacement velocity are also computed at this step...
2014
Abstract: Calculation of Amplitude and Velocity in General Anisotropic Media; #90224 (2015)
M. Malehmir and D. R. Schmitt
Search and Discovery.com
... of this approach, consider an incident plane wave arriving from above to a plane boundary between two anisotropic media, figure 1. General Snell’s law for anisotropic...
2015
Synthetic Seismograms for PS Seismic Data; #41793 (2016)
Satinder Chopra, Ritesh Kumar Sharma
Search and Discovery.com
... defining the interface. The angular relationships between the different wave components are governed by Snell‟s Law (which we all studied in high...
2016
Secondary Porosity Revisited: The Chemistry of Feldspar Dissolution by Carboxylic Acids and Anions (1)
RONALD K. STOESSELL and EDWARD D. PITTMAN
AAPG Bulletin
..., Applied inorganic analysis: New York, John Wiley, 1034 p. Kharaka, Y. K., L. M. Law, W. W. Carothers, and D. F. Goerlitz, 1986, Role of organic species...
1990
Chapter Ten-part 2: Depth Conversion
Leslie R. Denham, Dave K. Agarwal
AAPG Special Volumes
... with a vertical ray and bending it according to Snell’s Law at all velocity boundaries. This process is called “image ray migration.” If there is an abrupt...
2011
Derivation of Seismic Depth Sections
H. Buchholtz, W. Houba
Geological Society of Malaysia (GSM)
... and converted them to depth by using wave front charts and Snell's law. This type of horizon migration has become an important tool still nowadays taking...
1987
Combination of Seismic Velocity Gradient and Sonic Gradient Variation as a Hydrocarbon Indicator: A Case Study in Clastic Reservoirs in South Sumatra
Iswani Waryono, Wahyu Triyoso
Indonesian Petroleum Association
... the observation point and the normal incidence point (normal ray), and only primary events are taken into account. The central ray satisfies Snell’s law...
2012