Herodotus Basin - Egypt

MC3D-EGY20-BLOCK2 3D GeoStreamer

3D GeoStreamer coverage essential for lead and prospect identification.
Website Map for Survey MC3D-EGY20-BLOCK2
3D seismic survey in the 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 offshore extension of the onshore Western Desert and associated plays. The deeper water parts of the survey fall within the Herodotus Basin and include some thick salt. In this area targets are likely to be presalt structures and possibly pinch-outs against the shelf.
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
  • GeoStreamer
  • Size: 4903
  • Acquisition year: 2020
  • Completion of processing: 2021
  • Vessel: Ramform Hyperion
  • In partnership with: EGAS.

Acquisition parameters

  • Number of streamers: 16
  • Streamer length: 8025 m
  • Streamer separation: 75 m
  • Shot interval: 16.667 m
  • Record length: 12.072 ms
  • Sample rate: 2 ms
  • Fold: 80


  • 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