Interferometric correlogram-space analysis
Seismic interferometry is a method of obtaining a virtual shot gather from a collection of physical shot gathers. The set of traces corresponding to two common receiver gathers from many physical shots is used to synthesize a virtual shot located at one of the receivers and a virtual receiver at...
| Main Authors: | , |
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| Format: | Technical Report |
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Massachusetts Institute of Technology. Earth Resources Laboratory
2012
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| Online Access: | http://hdl.handle.net/1721.1/68588 |
| _version_ | 1811089943277076480 |
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| author | Poliannikov, Oleg V. Willis, Mark E. |
| author2 | Massachusetts Institute of Technology. Earth Resources Laboratory |
| author_facet | Massachusetts Institute of Technology. Earth Resources Laboratory Poliannikov, Oleg V. Willis, Mark E. |
| author_sort | Poliannikov, Oleg V. |
| collection | MIT |
| description | Seismic interferometry is a method of obtaining a virtual shot gather
from a collection of physical shot gathers. The set of traces corresponding
to two common receiver gathers from many physical shots is used to synthesize a virtual shot located at one of the receivers and a virtual receiver
at the other. An estimate of a Green's function between these two receivers is obtained by first cross-correlating corresponding pairs of traces
from each of the shots and then stacking the resulting cross-correlograms.
In this paper, we study the structure of cross-correlograms obtained from
a VSP acquisition geometry using surface sources and down-hole receivers.
The model is purely acoustic and contains flat or dipping layers and/or
point inclusions that act as di ffractors. Results of a semblance-based
moveout scan of the cross-correlograms are used to identify the potential
geometry of the reflectors. This new information allows improvements in
the quality of the trace at the virtual receiver by either rejecting those
moveouts or enhancing them before the stack is performed. |
| first_indexed | 2024-09-23T14:27:59Z |
| format | Technical Report |
| id | mit-1721.1/68588 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T14:27:59Z |
| publishDate | 2012 |
| publisher | Massachusetts Institute of Technology. Earth Resources Laboratory |
| record_format | dspace |
| spelling | mit-1721.1/685882019-04-12T21:43:33Z Interferometric correlogram-space analysis Poliannikov, Oleg V. Willis, Mark E. Massachusetts Institute of Technology. Earth Resources Laboratory Poliannikov, Oleg V. Interferometry Imaging VSP Seismic interferometry is a method of obtaining a virtual shot gather from a collection of physical shot gathers. The set of traces corresponding to two common receiver gathers from many physical shots is used to synthesize a virtual shot located at one of the receivers and a virtual receiver at the other. An estimate of a Green's function between these two receivers is obtained by first cross-correlating corresponding pairs of traces from each of the shots and then stacking the resulting cross-correlograms. In this paper, we study the structure of cross-correlograms obtained from a VSP acquisition geometry using surface sources and down-hole receivers. The model is purely acoustic and contains flat or dipping layers and/or point inclusions that act as di ffractors. Results of a semblance-based moveout scan of the cross-correlograms are used to identify the potential geometry of the reflectors. This new information allows improvements in the quality of the trace at the virtual receiver by either rejecting those moveouts or enhancing them before the stack is performed. Massachusetts Institute of Technology. Earth Resources Laboratory ConocoPhillips (Firm) 2012-01-13T20:26:15Z 2012-01-13T20:26:15Z 2010-04-26 Technical Report http://hdl.handle.net/1721.1/68588 Earth Resources Laboratory Industry Consortia Annual Report;2010-13 application/pdf Massachusetts Institute of Technology. Earth Resources Laboratory |
| spellingShingle | Interferometry Imaging VSP Poliannikov, Oleg V. Willis, Mark E. Interferometric correlogram-space analysis |
| title | Interferometric correlogram-space analysis |
| title_full | Interferometric correlogram-space analysis |
| title_fullStr | Interferometric correlogram-space analysis |
| title_full_unstemmed | Interferometric correlogram-space analysis |
| title_short | Interferometric correlogram-space analysis |
| title_sort | interferometric correlogram space analysis |
| topic | Interferometry Imaging VSP |
| url | http://hdl.handle.net/1721.1/68588 |
| work_keys_str_mv | AT poliannikovolegv interferometriccorrelogramspaceanalysis AT willismarke interferometriccorrelogramspaceanalysis |