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The AAPG/Datapages Combined Publications Database

Showing 64 Results. Searched 191,954 documents.

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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: Coastal Changes and Engineering Structures

J. K. Raj

Geological Society of Malaysia (GSM)

... Malaya 50603 Kuala Lumpur Breakwaters, jetties and other structures constructed at coastlines where there is an oblique approach of wavefronts have...

2002

Abstract: Wavefront Picking for 3D Tomography and Full-Waveform Inversion; #90319 (2018)

Abdullah A. Theyab

Search and Discovery.com

.... To minimize the picking and QC time, I propose an efficient approach for picking first-break wavefronts on coarsely-sampled time slices of 3D shot...

2018

Abstracts: Attenuating 2D Noise in a 3D World; #90173 (2015)

David C. Henley

Search and Discovery.com

... a schematic of typical 3D acquisition geometry for one source point, with concentric circles representing the wavefronts of source-generated noise...

2015

Abstract: Getting Something for Nothing: Noise Attenuation in an Aliased World; #90174 (2014)

David C. Henley

Search and Discovery.com

... then be effectively estimated and removed by application of various processing techniques. Even when the noise wavefronts are visibly aliased...

2014

-- no title --

user

Search and Discovery.com

... by horizontally summed geophone arrays whose antenna pattern preferentially admits vertically travelling reflection wavefronts, rather than non-vertical...

Unknown

-- no title --

user

Search and Discovery.com

... by horizontally summed geophone arrays whose antenna pattern preferentially admits vertically travelling reflection wavefronts, rather than non-vertical...

Unknown

erformance of Seismic Arrays in the Presence of Weathering Layer Variations, #41841 (2016).

Jubran Akram, Abdullatif A. Al-Shuhail

Search and Discovery.com

... receiver array as well as partially under a few receivers. We use Ricker wavelet and model plane wavefronts with incidence angles (90°, 70°, 45°, 20° and 5...

2016

Abstracts: Locating Microseismicity in Three-Dimensionally Heterogeneous Reservoirs; #90173 (2015)

Adam M. Baig, Ted Urbancic, Margaret Seibel, Vladimir Shumila

Search and Discovery.com

... by lithological tops interpreted from seismic cross-sections. Figure 2: A depth view of wavefronts (blue curves) and traveltime field (blue-yellow contours...

2015

Abstract: Performance of Seismic Arrays in the Presence of Weathering Layer Variations; #90254 (2016)

Jubran Akram, Abdullatif A. Al-Shuhail

Search and Discovery.com

... receivers. We use Ricker wavelet and model plane wavefronts with incidence angles (90o, 70o, 45o, 20o and 5o) on a 12-element equally weighted array...

2016

Abstract: Influence of Error in Estimating Anisotropic Parameters on VTI Depth Imaging; #90255 (2017)

S. Y. Moussavi Alashloo, D. P. Ghosh, W. Y. Wan Ismail

Search and Discovery.com

... the influence of anisotropic errors on the imaging. Comparing the isotropic and VTI traveltimes demonstrates a considerable lateral difference of wavefronts...

2017

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

...-arrival traveltimes and the inability to track wavefronts arriving at later times is a drawback of this method. In complex velocity structures...

2014

Getting Something for Nothing: Noise Attenuation in an Aliased World; #41291 (2014)

David C. Henley

Search and Discovery.com

... energy. The offending noise can then be effectively estimated and removed by application of various processing techniques. Even when the noise wavefronts...

2014

Multifocusing Stack Technique for Subsurface Imaging, #40749 (2011)

Sunjay Sunjay,

Search and Discovery.com

... in the conventional CMP stacking. Analytical expressions (based on the spherical representation of wavefronts) describe the moveout correction...

2011

Abstract: Prestack Signal Enhancement by Non-hyperbolic MultiFocusing; #90187 (2014)

Evgeny Landa, Alex Berkovitch, and Kostya Deev

Search and Discovery.com

... angle of the normal ray β and the radii of curvature Rcre and Rcee of the two fundamental wavefronts, namely, normal incident point and normal waves...

2014

Know Before You Go!

Lars Zühlsdorff, Trond Haugland

GEO ExPro Magazine

... words, wavefronts rather than rays are propagated through the model, which is much closer to what is happening in the field (and much more efficient...

2021

Traveltime Computations for Locating the Source of Micro Seismic Events and for Forming Gridded Traveltime Maps

John C. Bancroft

Search and Discovery.com

... is suitable for locating microseismic events, mapping traveltimes that are computed along raypaths to gridded times, or for propagating first arrival...

Unknown

Traveltime Computations for Locating the Source of Micro Seismic Events and for Forming Gridded Traveltime Maps

John C. Bancroft

Search and Discovery.com

... is suitable for locating microseismic events, mapping traveltimes that are computed along raypaths to gridded times, or for propagating first arrival...

Unknown

Abstract: Spectral-element Simulations of Elastic Wave Propagation in Exploration and Geotechnical Applications; #90187 (2014)

Lin Zheng, Qi Zhao, Qinya Liu, Bernd Milkereit, and Giovanni Grasselli

Search and Discovery.com

... for all simulations are shown on the right panels with wavefronts identified and labeled. The effects of water layer and the salt-dome geometry are clearly...

2014

Abstracts: Application of CSP Gather Modeling for Determination of Velocity Smoothing Operator for Prestack Kirchhoff Depth Migration; #90173 (2015)

Hassan Khaniani and John C. Bancroft

Search and Discovery.com

... wavefronts initiated from the scatter point for times of 0.3s, 0.6s and 0.9s are computed. After applying a band pass filter by frequencies of 0 Hz...

2015

High-EffortŽ Seismic Acquisition: Improving Image Detail; #41568 (2015)

David C. Henley, Kevin Hall, Henry Bland, Eric Gallant, Gary Margrave, Malcolm Bertram

Search and Discovery.com

... provided by horizontally summed geophone arrays whose antenna pattern preferentially admits vertically travelling reflection wavefronts, rather than non...

2015

The Array Sonic .... A New Technique for Acoustic Measurements

A. James

Indonesian Petroleum Association

... part causes wavefronts which develop in the formation. A typical waveform is shown in Fig. 2. Figure 2. Array sonic waveforms Two wavefronts...

1989

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