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The AAPG/Datapages Combined Publications Database

Showing 18 Results. Searched 188,040 documents.

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Abstract: How to Attenuate Diffracted Noise: (DSCAN) A New Methodology; #90211 (2015)

Ali Karagul, Todd Mojesky, XinXiang Li, and Necati Gulunay

Search and Discovery.com

... for attenuating diffracted energy from shallow water inhomogeneities that are harmful to marine surveys. The method uses the double square root travel time equation...

2015

Abstract: A Comparison of Standard Migration with EOM for Hussar Data; #90174 (2014)

Thais A. Guirigay, John C. Bancroft, and J. Helen Isaac

Search and Discovery.com

... or two-way, travel time can be computed from: , (2) The equation (2) is known as the double square root (DSR) equation and defines the traveltime...

2014

Abstracts: Converted Wave Processing in the EOM Domain; #90173 (2015)

Thais A. Guirigay and John B. Bancroft

Search and Discovery.com

...-way zero-offset time and to is defined from the data. The equation (2) is known as the double square root (DSR) equation and defines the traveltime...

2015

Abstract: Full Waveform Inversion Algorithm using Time Imaging Methods; #90174 (2014)

Hassan Khaniani, John C. Bancroft, Gary F. Margrave, and Eric von Lunen

Search and Discovery.com

... In the general case where the velocity inside the Earth is varying smoothly, the Double Square Root (DSR) equation serves as a starting point for total...

2014

Abstract: Simultaneous P-P and P-S Waveform Inversion Algorithm Using Pre-Stack Time Imaging Method ; #90187 (2014)

Hassan Khaniani, John C. Bancroft, and Eric von Lunen

Search and Discovery.com

... intercept time using Double Square Root (DSR) equation and the result of Zoeppritz solvers (Aki and Richards, 1980) from the scatter point to produce...

2014

Abstract: Converted-wave Time Imaging … Nuts and Bolts; #90187 (2014)

Shaowu Wang, Thomas Hollis, and Wayne Nowry

Search and Discovery.com

... separately. By extending the work of Ver West and Wilkinson (2003) to the double-square root (DSR) equation for converted-wave travel time proposed by Li...

2014

Abstracts: True-Amplitude PS Prestack Time Migration via 5D Interpolation; #90173 (2015)

Peter W. Cary, Albert Zhang

Search and Discovery.com

... CSPG/CSEG/CWLS GeoConvention 2011, Calgary, Alberta, Canada, May 9-11, 2011 square root equation of converted wave travel-time using four parameters...

2015

Pre-Stack Imaging: Time or Depth? (Paper 25)

Carl Notfors, Peter Whiting, Geoff Mansfield

Geological Society of Malaysia (GSM)

... through the velocity field, or solve a recursive equation, to obtain the diffraction surfaces. Algorithms that use the "double-square root" equation...

2000

Delineating Thin-Bed Tight Gas Sand Reservoir with Prestack Joint PP/PS Inversion, #41363 (2014)

Zhiwen Deng, Ming Qiang, Shuanghu Shi, Xiaofeng Liang, Yang Zhu, Yijun Zhou, Qingjia Tong

Search and Discovery.com

... Shear Wave Velocity Analysis For a single isotropic horizontal layer, the following double square root equation can accurately express the converted...

2014

Abstract: Simplified Processing of Converted Wave Data; #90224 (2015)

John C. Bancroft and Thais Guirigay

Search and Discovery.com

... the double square-root equation to give the total traveltime T using T02 P hs2 T02 S hr2    2   2 T 4 4 VP VS , (2) where the T0...

2015

Obtaining Low Frequencies for Full Waveform Inversion by Using Augmented Physics

Eldad Haber, Eran Treister, Elliot Holtham

Petroleum Exploration Society of Australia (PESA)

..., A. and Fomel, S. [2013] First-break traveltime tomography with the double-square- root eikonal equation. Geophysics, 78(6), U89–U101. Nocedal, J...

2016

Imaging Subsurface Structures Under Gas Clounds by Multi-Component Technology

Xiaogui Miao, Loh Fong Cheen, Libo Zi, Jing Du, Magali Beele, Jacques Bonnafe, Natalia Anggriani, Gilles Vallon, Claudio Strobbia

Indonesian Petroleum Association

... amplitude compensation. Figure 12 - Schematic representation for the computation of PS travel time with the double square root equation for a receiver...

2014

Abstract: Least Squares Pre-Stack Time Migration for Imaging and Reconstruction of Converted Waves; #90224 (2015)

Aaron Stanton

Search and Discovery.com

... least squares migration with a Double Square Root (DSR) operator to express reflectivity as a function of subsurface position and ray parameter...

2015

The influence of data selection and type of analysis on interpretations of temporal stability in Oligocene faunas of Mississippi

Christy C. Visaggi, Linda C. Ivany

PALAIOS

... the log or fourth root (i.e., double square root) of raw abundance counts and then comparing these values using the BrayCurtis dissimilarity coefficient...

2010

The stratigraphic distribution of fossils in a tropical carbonate succession: Ordovician Bighorn Dolomite, Wyoming, USA

Steven M. Holland, Mark E. Patzkowsky

PALAIOS

... square-root transformation of original abundance. Cluster analysis was based on Ward’s method with Euclidean distances, implemented by the agnes method...

2009