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Overview of SEP research Paul Sava
The problem Modeling operator Seismic image Seismic data
Migration Migration operator Seismic image Seismic data
Migration operator: wavefield propagation Downward continuation –Common-azimuth migration –Narrow-azimuth migration Reverse time migration Propagation Imaging Amplitudes Velocity
Downward continuation Narrow- azimuth Common- azimuth Biondi, 2003
Reverse-time migration Biondi & Shan, 2002 Downward- continuation Reverse-time migration
Migration operator: angle-gathers Data-space Prucha et al Image-space Sava&Fomel, Tisserant&Biondi (S-G) Rickett&Sava (shot profile) Rosales&Rickett (converted waves) Biondi&Shan (reverse-time) Propagation Imaging Amplitudes Velocity
Prucha et. Al (1999), Sava&Fomel (2002) Angle-domain common image gathers Data-space ADCIG Image space ADCIG
3-D angle gathers Tisserant & Biondi (2003)
Migration operator: amplitudes Amplitude preserving wavefield extrapolation Sava & Biondi Amplitude corrections of extrapolation operators Vlad et. al Hi resolution imaging condition Valenciano & Biondi Propagation Imaging Amplitudes Velocity
Amplitude-preserving migration Sava & Biondi (2002) Amplitude preserving Kinematic migration
Migration operator: velocity Traveltime-based Clapp Wavefield-based Sava & Biondi Propagation Imaging Amplitudes Velocity
Angle-domain traveltime tomography Clapp (2001)
Tomography: geological constraints Clapp (2001)
Wave-equation MVA Slowness perturbation Image perturbation Sava & Biondi (2003) z z xx
Wave-equation MVA Sava & Biondi (2003)
Multiple attenuation –Data space –Image space Multiple imaging Joint imaging
Time (s) Input data Hyperbolic Radon Adaptive filtering Pattern recognition Multiple attenuation: data space Guitton (2003)
PRT image space HRT data space Multiple attenuation: image space Sava & Guitton (2003)
Multiple imaging Multiple attenuation –Data space –Image space Multiple imaging Joint imaging
Multiple imaging: shot-profile migration Guitton (2002) Up-going wavefield Down-going wavefield PrimariesImpulse Up-going wavefield Down-going wavefield MultiplesPrimaries Primaries imagingMultiples imaging
Multiple imaging: S-G migration Shan (2003)
Joint imaging Multiple attenuation –Data space –Image space Multiple imaging Joint imaging
Brown (2003) S G
Migration Migration operator Seismic image Seismic data
Inversion operator Least-squares imaging Seismic image Seismic data
Least-squares imaging Normalized migration Matching filters Least-squares inverse Multiple realizations Illumination compensation Rickett (2001) Prucha (2003)
Normalized migration Rickett (2003)
Least-squares imaging Guitton (2003) Normalized migration Matching filters Least-squares inverse Multiple realizations (L*L) data L* L*L B Find B such that
Imaging with mathching filters Guitton (2003)
Least-squares inverse Normalized migration Matching filters Least-squares inverse Multiple realizations
Regularization z-x preconditioning z x z-p h preconditioning z phph Prucha (2003)
Regularized inversion Prucha (2003) Least-squares inverse Migration
Multiple realizations Normalized migration Matching filters Least-squares inverse Multiple realizations
Multiple realizations: interpolation Clapp (2002)
Multiple realizations: velocity Clapp (2002)
Reports (all online) Seplib Computers: 4 clusters 3D real data
JOINT IMAGING OF THE MEDIA USING DIFFERENT TYPES OF WAVES A.V. Reshetnikov* Yu.A. Stepchenkov* A.A. Tabakov** V.L. Eliseev** * SPbSU, St-Petersburg, **
Relations between reflection and transmission responses of 3-D inhomogeneous media Kees Wapenaar Department of Applied Earth Sciences Centre for Technical.
Traditional practice separates seismic data processing and further interpretation. However the most efficient processing methods utilize a-priori information.
Wave propagation in solid medium in time By J. Virieux and S. Operto Ecole thématique CNRS-CGG-UNSA SEISCOPE septembre 2006 UMR Géosciences Azur.
tool to prioritize other instrument campaigns (eg, Incoherent Scatter Radar). The final reconstruction used a quiet profile a priori.
Refraction Seismology Chapter :: 6. Snells Law & Critical Refraction Because seismic sources radiate waves in all directions Because seismic sources radiate.
The estimation of the SZ effects with unbiased multifilters Diego Herranz, J.L. Sanz, R.B. Barreiro & M. López-Caniego Instituto de Física de Cantabria.
Time-reversal acoustics, virtual source imaging, and seismic interferometry Haijiang Zhang University of Science and Technology of China.
Signal Basics ELEC 309 Prof. Siripong Potisuk. What is a function? A rule of correspondence that maps or assigns to each element (x) of a given set A.
Figures Cluster World Oct OpendTect article For optimal printing quality do not copy Figures 3, 4 and 6a, 6b and 6c from this Powerpoint file. Instead.
Feasibility Study of Fracture Detection Using Seismic Data in Karachaganak Xiang-Yang Li 1, Enru Liu 1 and Tim Pointer 2 1 Edinburgh Anisotropy Project,
All slides © S. J. Luck, except as indicated in the notes sections of individual slides Slides may be used for nonprofit educational purposes if this copyright.
1 SKYAERO I shot an arrow toward the sky It hit a white cloud passing by The cloud fell dying to the shore I dont shoot arrows anymore - Shel Silverstein.
Soil thickness mapping using seismic surface waves for the assessment of soil vulnerability to erosion 1 Samyn K., 1 Cerdan O., 1 Grandjean G., 1 Bitri.
Stable discontinuous staggered grid in the 4 th -order finite-difference modeling of seismic ground motion Kristek 1,2, J., Moczo 1,2, P., Galis 1,2, M.
Bayesian Belief Propagation Reading Group. Overview Problem Background Bayesian Modelling Bayesian Modelling Markov Random Fields Markov Random Fields.
F W Schroeder04 L 5 – Seismic Method Courtesy of ExxonMobil Lecture 5 Mitchum et al., 1977b AAPG©1977 reprinted with permission of the AAPG whose permission.
High Resolution Carbonate Reef Interpretation Using Cross Well Data Thomas Morgan, Ph.D., Schlumberger Mike Raines*, Whiting Petroleum *formerly with Sandridge.
Jörg Drechsler (Institute for Employment Research, Germany) NTTS 2009 Brussels, 20. February 2009 Disclosure Control in Business Data Experiences with.
35 th COSPAR Scientific Assembly July 2004 Probing the Solar Dynamo by observing the Sun’s high latitude field, flows and seismic waves Thierry Corbard.
An Introduction to Fourier and Wavelet Analysis: Part I Norman C. Corbett Sunday, June 1, 2014.
Image Registration Mapping of Evolution. Registration Goals Assume the correspondences are known Find such f() and g() such that the images are best.
Error Characterization of the Alpha Residuals Emissivity Extraction Technique Michael C. Baglivio, Dr. John Schott, Scott Brown Center for Imaging Science.
Mutual Information Based Registration of Medical Images Pluim et al: Survey Mattes et al: CT/PET Registration 1.
Localization Technology. Outline Defining location Methods for determining location Triangulation, trilateration, RSSI, etc. Location Systems.
STATISTICAL ANALYSIS AND SOURCE LOCALISATION METHODS FOR DUMMIES ANADUAKA, CHISOM KRISHNA, LILA UNIVERSITY COLLEGE LONDON.
Dynamic Phase Boundary Estimation using Electrical Impedance Tomography By Umer Zeeshan Ijaz, Control Engineering Lab, Department of Electronic Engineering,
North Sea faulting How the ADAPS inversion / integration clarifies the strike-slip structure – by David Paige This study was originally proposed September,
1 Hierarchical Part-Based Human Body Pose Estimation * Ramanan Navaratnam * Arasanathan Thayananthan Prof. Phil Torr * Prof. Roberto Cipolla * University.
Activity Recognition Ram Nevatia Presents work of F. Lv, P. Natarajan and V. Singh Institute of Robotics and Intelligent Systems Computer Science Department.
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