1 / 13

Paul Sava* Stanford University Sergey Fomel UT Austin (UC Berkeley)

Angle-domain common-image gathers. Paul Sava* Stanford University Sergey Fomel UT Austin (UC Berkeley). C ommon I mage G athers. Representations of the seismic events sorted by their location in the subsurface. Image domain offset-domain angle-domain. Classes of methods Kirchhoff

Download Presentation

Paul Sava* Stanford University Sergey Fomel UT Austin (UC Berkeley)

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Angle-domain common-image gathers • Paul Sava* Stanford University • Sergey Fomel UT Austin (UC Berkeley)

  2. Common Image Gathers • Representations of the seismic events sorted by their location in the subsurface • Image domain • offset-domain • angle-domain • Classes of methods • Kirchhoff • Wave-equation • S-G migration • shot-profile migration

  3. Agenda Common-image gathers Definitions Offset vs. angle Computational space ADCIG methodology Examples

  4. Offset-Domain Common Image Gathers h h z z Kirchhoff Wave-equation flat events focused events

  5. Angle-Domain Common Image Gathers g g z z Kirchhoff Wave-equation flat events flat events

  6. Example

  7. Agenda Common-image gathers Definitions Offset vs. angle Computational space ADCIG methodology Examples

  8. Reflection scheme Source Receiver 2h g g V(x,y,z) a g g v

  9. Wave-equation ADCIG methods x-domain (slant-stack) k-domain (RTT) IMAGE space DATA space Reflection angle (g) Offset ray-parameter (ph)

  10. Agenda Common-image gathers Definitions Offset vs. angle Computational space ADCIG methodology Examples

  11. Wave-equation CIGs: example ODCIG ADCIG

  12. ADCIG: g vs. ph

  13. Summary • CIG domains • offset or angle • CIG concepts • flatness: Kirchhoff • focusing: wave-equation • Wave-equation ADCIG • data space • image space

More Related