GRE Reprocessed | PGS

Ionian Sea - Greece - 1960-1990

GRE Reprocessed 2D

Reprocessed 2D legacy data complementing the recently reprocessed GeoStreamer 2D
Existing legacy data containing important well tie information have been reprocessed and matched to the new PGS acquisition. The resulting data grid provides further insight into Greece’s offshore geological setting.
A petroleum system is confirmed by the Katakolon oil discovery and discoveries in Albania and Italy. Identified traps are sub-thrusts, salt related and stratigraphic. The source rocks include Triassic evaporates and Jurassic-Cretaceous shales. Reservoirs consist of clastic and carbonate strata.
New imaging technology offers an improved version of vintage data sets. The new Pre-stack time migration forms part of the Greece MegaProject, giving the an updated understanding of the hydrocarbon potential of offshore Greece.

Specifications

Survey summary

  • Type: 2D
  • Geometry: Standard
  • Size: 9 727 km
  • Acquisition year: 1960-1990
  • Completion of processing: 2014
  • Reprocessing: Yes
  • Water depth: 10-1 500 m
  • Shooting direction: Varying, but mostly NE-SW
  • Vessel: N/A
  • In partnership with: The Hellenic Ministry of Energy

Acquisition parameters

  • Number of streamers: 1
  • Streamer length: 2 400-2 600 m
  • Shot interval: 25/50 m
  • Record length: 6 000 ms
  • Sample rate: 4 ms
  • Bin dimensions (Acquisition): 25 m
  • Bin dimensions (Processing): 25 m
  • Fold: 100

Processing

  • Designature
  • Swell noise attenuation
  • Tau-p demultiple
  • PSTM
  • PSTM denoising
  • PSTM stack denoising

Time products

  • Final PSTM stacks
  • Final PSTM gathers
  • Navigation data
  • Velocity data (Migration)

Additional products

  • Interpretation