Herodotus Basin - Egypt

MC3D-EGY21-BLOCK3 3D GeoStreamer (In Processing)

3D GeoStreamer coverage essential for lead and prospect identification
Website Map for Survey MC3D-EGY21-BLOCK3
3D seismic survey in the very western part of the offshore area following up on regional 2D in order to further assess prospectivity across Egypt's west Mediterranean offshore.
The survey covers the deeper water parts of the Herodotus Basin, beyond the shelf. The survey includes a salt (evaporite) layer and some deformation related to the Mediterranean Ridge. In this area targets are likely to be presalt structures and possibly pinch-outs against the shelf edge.
GeoStreamer acquisition provides broadband data rich in both low and high-frequency information that can be reliably used for structural interpretation and rock property analysis. PSDM products will be available for accurate imaging of subsalt reservoir targets.


Survey summary

  • Type: 3D (In Processing)
  • GeoStreamer
  • Geometry: Standard
  • Size: 3163
  • Acquisition year: 2021
  • Completion of processing: 2022
  • Water depth: 3000-3300 m
  • Shooting direction: 110.3/290.3
  • Vessel: Ramform Hyperion
  • In partnership with: EGAS

Acquisition parameters

  • Number of streamers: 12
  • Streamer length: 10050 m
  • Streamer separation: 150 m
  • Shot interval: 16.667 m
  • Record length: 12072 ms
  • Sample rate: 2 ms
  • Bin dimensions (Acquisition): 12.5 x 25 m
  • Bin dimensions (Processing): 12.5 x 25 m
  • Fold: 100


  • P-UP generation
  • Full source deghosting
  • 3D surface related multiple elimination (SRME)
  • Convolutional 3D SRME
  • Wave equation 3D SRME
  • 2D surface related multiple elimination (SRME)
  • High resolution radon demultiple
  • Full waveform inversion (FWI)
  • Kirchhoff prestack time migration (PSTM)
  • Kirchhoff prestack depth migration (PSDM)
  • Separated wavefield imaging (SWIM)
  • Anisotropic Kirchhoff prestack time migration (PSTM)
  • Poststack time migration
  • Post-migration image optimization

Depth products

  • Final Kirchhoff PSDM stack
  • PSDM angle stack near
  • PSDM angle stack mid
  • PSDM angle stack far
  • PSDM gathers
  • Anisotropy and velocity models
  • Velocity model
  • Final Kirchhoff PSDM angle stacks

Time products

  • Final Kirchhoff PSTM Stack
  • Angle stack near
  • Angle stack mid
  • Angle stack far
  • Migration velocity

Additional products

  • Gravity
  • Magnetics