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Welcome to the new Datapages Archives

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The AAPG/Datapages Combined Publications Database

Showing 64 Results. Searched 191,921 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

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: Raypath-Consistent Shear Wave Statics; #90224 (2015)

Raul Cova, David Henley, and Kris Innanen

Search and Discovery.com

... on the assumption of nearly-vertical raypaths through the LVL responsible for statics. However, the low velocity of S-waves magnifies the delays...

2015

Abstract: 2D Depth Velocity Analysis without Tomography; #90187 (2014)

J. Patrick Butler and Randy Kolesar

Search and Discovery.com

... as epsilon changes A static shift is being used to correct moveout. Reflector 1 Reflector 2 Reflector 3 3 reflectors Bedding direction Raypaths vel...

2014

Finite Difference Modelling: Part IV

Lasse Amundsen, Ørjan Pedersen, Martin Landrø

GEO ExPro Magazine

... velocity, the wave originating at the source expands in a series of spherical wavefronts centred on that source; a consequence of Fermat’s principle...

2019

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

Physical Basis of Reflection Seismology

Bruce S. Hart

Special Publications of SEPM

...) . At the left, an initial acoustic pulse is generated . The energy expands out as circular wavefronts (in an isotropic ediu ) like ripples in a pond, although...

2000

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

II. Migration to Remedy Geometric Distortions

Robert E. Sheriff

AAPG Special Volumes

... of the reflections at the different locations and regarded the common tangent to those arcs as the reflecting interface. The idea of striking wavefronts...

1981

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

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)

... zones have been covered by the wavefronts. Table 1: Parameters applied on the seismic acquisition simulation in Tesseral Pro software. Acquisition scheme...

2021

Outlining Shale Masses By Geophysical Methods

A. W. Musgrave , W. G. Hicks

AAPG Special Volumes

... in the same manner, and the wavefronts were plotted on the distance-versus-depth plot. The difference between the two plots indicates that a large shale...

1968

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

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