seismic modeling, migration and velocity inversion

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Seismic Modeling, Migration and Velocity Inversion Tomography Bee Bednar Panorama Technologies, Inc. 14811 St Marys Lane, Suite 150 Houston TX 77079 May 18, 2014 Bee Bednar (Panorama Technologies) Seismic Modeling, Migration and Velocity Inversion May 18, 2014 1 / 19

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Bee Bednar
Houston TX 77079
May 18, 2014
Outline
Tomography
Outline
Tomography Residual Tomography
Tomography after Migration
Local ”best” image dip Offset differences from gathers
Bee Bednar (Panorama Technologies) Seismic Modeling, Migration and Velocity Inversion May 18, 2014 4 / 19
Tomography Residual Tomography
Tomography Residual Tomography
Tomography Residual Tomography
Tomographic Input Requirements
Bee Bednar (Panorama Technologies) Seismic Modeling, Migration and Velocity Inversion May 18, 2014 7 / 19
Tomography Residual Tomography
Tomography Residual Tomography
Tomography Residual Tomography
Non-Flat Gathers Before
Non flat gathers. Bee Bednar (Panorama Technologies) Seismic Modeling, Migration and Velocity Inversion May 18, 2014 10 / 19
Tomography Residual Tomography
Flat Gathers After
Flat gathers. Bee Bednar (Panorama Technologies) Seismic Modeling, Migration and Velocity Inversion May 18, 2014 11 / 19
Tomography Residual Tomography
Tomography Residual Tomography
Bee Bednar (Panorama Technologies) Seismic Modeling, Migration and Velocity Inversion May 18, 2014 13 / 19
Tomography Residual Tomography
Bee Bednar (Panorama Technologies) Seismic Modeling, Migration and Velocity Inversion May 18, 2014 14 / 19
Tomography Residual Tomography
Bee Bednar (Panorama Technologies) Seismic Modeling, Migration and Velocity Inversion May 18, 2014 15 / 19
Tomography Residual Tomography
Bee Bednar (Panorama Technologies) Seismic Modeling, Migration and Velocity Inversion May 18, 2014 16 / 19
Tomography Residual Tomography
Gulf of Mexico tomographic example. After Marta Jo Woodward. Courtesy WesternGeco
Bee Bednar (Panorama Technologies) Seismic Modeling, Migration and Velocity Inversion May 18, 2014 17 / 19
Tomography Residual Tomography
Tomographic Input Requirements
Required input to residual tomography A good migration velocity field A current set of horizons or Local dip everywhere As many horizons as possible. Picked set of residual depths for each common offset or angle gather
Bee Bednar (Panorama Technologies) Seismic Modeling, Migration and Velocity Inversion May 18, 2014 18 / 19
Tomography Residual Tomography
Main Part