Imaging zero-offset 3-D P-cable data with CRS method

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Erscheinungsjahr:
2019
Medientyp:
Text
Schlagworte:
  • Image processing
  • Wave scattering and diffraction
Beschreibung:
  • Standard seismic acquisition and processing require appropriate source–receiver offsets. Pcable technology represents the opposite, namely, very short source–receiver offsets at the price of increased spatial and lateral resolution with a high-frequency source. To use this advantage, a processing flow excluding offset information is required. This aim can be achieved with a processing tuned to diffractions because point diffractions scatter the same information in the offset and midpoint direction. Usually, diffractions are small amplitude events and a careful diffraction separation is required as a first step. We suggest the strategy to use a multiparameter stacking operator, for example, common-reflection surface, and stack along the midpoint direction. The obtained kinematic wave-front attributes are used to calculate time-migration velocities. A diffractivity map serves as a filter to refine the velocities. This strategy is applied to a 3-D P-cable data set to obtain a time-migrated image. © 2019 Oxford University Press. All rights reserved.
Lizenz:
  • info:eu-repo/semantics/restrictedAccess
Quellsystem:
Forschungsinformationssystem der UHH
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Quelldatensatz
oai:www.edit.fis.uni-hamburg.de:publications/534e8467-b6ed-437a-8f96-a7ae77591a6f