Print Email Facebook Twitter Imaging blended vertical seismic profiling data using full-wavefield migration in the common-receiver domain Title Imaging blended vertical seismic profiling data using full-wavefield migration in the common-receiver domain Author Soni, A.K. Verschuur, D.J. Faculty Applied Sciences Department IST/Imaging Science and Technology Date 2015-04-27 Abstract For vertical-seismic-profiling (VSP) measurements, the use of blended acquisition, with time-overlapping shot records, can greatly reduce the downtime and, thereby, provide large cost savings. For directly imaging blended VSP measurements, we have used full-wavefield migration (FWM). FWM is an inversion-based imaging scheme that enables us to use any kind of complex source wavefield to estimate the subsurface reflectivity, using all the multiples (surface and internal) in the recorded data. The multiple scattering helps in improving the illumination as well as the vertical resolution of the image. In this scheme, active deblending is not required because the imaging process itself acts as a deblending procedure. We tested the potential of FWM to image blended VSP data, using simple and complex synthetic models. We clearly determined that using the primaries, surface multiples, and internal multiples enhanced the illumination away from the well trajectory, in which blending noise was suppressed due to the inversion scheme. We observed that some blending crosstalk noise leaked into the images with large blending factors. Such noise could be further reduced with additional constraints in the involved least-squares inversion process. Subject vertical seismic profilingblended acquisitionsimultaneous source acquisitiontrue-amplitude migrationinversionmodelingilluminationimaginginternal multiplessurface multiples To reference this document use: http://resolver.tudelft.nl/uuid:8fbc103e-70c5-40eb-95fb-f700a09dd0d1 Publisher Society of Exploration Geophysicists ISSN 0016-8033 Source https://doi.org/10.1190/geo2014-0193.1 Source Geophysics, 80 (3), 2015 Part of collection Institutional Repository Document type journal article Rights © 2015 Society of Exploration Geophysicists Files PDF Soni_2015.pdf 8.43 MB Close viewer /islandora/object/uuid:8fbc103e-70c5-40eb-95fb-f700a09dd0d1/datastream/OBJ/view