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Deblending seismic data by directionality penalties
2016 (Engelska)Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

In conventional seismic surveys, there is a waiting time between sequentially fired shots. This time is determined such that the deepest reflection of interest is recorded before the following source is fired. In a survey with simultaneous or blended sources, the waiting time between the firing of shots is not dependent on the deepest reflection of interest, it is usually much shorter and/or can have random time delays. Thus, the wavefields due to independent sources are overlapped in the records.

The blended data exhibit strong discontinuities in the source direction, in contrast to the coherency expected from seismic measurements. A strategy for deblending could then be to suppress these discontinuities. In this paper, we propose to do this by designing an energy functional that uses a combination of individual functionals that penalize deviations from local plane waves in the reconstructed (deblended) data, as well as a least squares term that penalizes discrepancies between the deblended and the measured data. In this way, we derive a set of coupled nonlinear partial differential equations that we use for the deblending procedure.

Ort, förlag, år, upplaga, sidor
2016.
Nationell ämneskategori
Geofysik
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URN: urn:nbn:se:hb:diva-25215DOI: 10.3997/2214-4609.201601410Scopus ID: 2-s2.0-85088758739OAI: oai:DiVA.org:hb-25215DiVA, id: diva2:1540729
Konferens
78th EAGE Conference and Exhibition 2016: Efficient Use of Technology - Unlocking Potential
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Cited By :3; Export Date: 29 March 2021; Conference Paper

Tillgänglig från: 2021-03-30 Skapad: 2021-03-30 Senast uppdaterad: 2021-04-01Bibliografiskt granskad

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Wittsten, Jens

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Totalt: 16 träffar
RefereraExporteraLänk till posten
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  • harvard-cite-them-right
  • apa
  • ieee
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  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf