NGA OPL 250 | PGS

Central Niger Delta - Nigeria - 1999

NGA OPL 250 3D

Conventional long offset MultiClient 3D data offshore Nigeria
Website Map for Survey NGA_250_MC3D
This popular 3D seismic survey is aimed to provide an understanding of this highly prolific Niger Delta and further highlight its considerable remaining exploration potential. Additional information with regard to survey parameters is available upon request.
The survey is located over the open blocks OPL 2011 and OPL 250 in the deep waters of Niger Delta at the western limit of the compressional domain. Large anticlinal structures created by toe-thrusts and shale walls detaching on the Akata shale hold significant potential.
The 3D data also shows a number of amplitude anomalies, for example amplitude brightening and flattening on structural highs. Fields and hydrocarbons discoveries such as Orso to the East and Ofigbo to the North proved the presence of working petroleum systems.

Specifications

Survey summary

  • Type: 3D
  • Geometry: SLO, Other
  • Size: 1 264 sq.km
  • Acquisition year: 1999
  • Completion of processing: 1999
  • Water depth: 1 400-2 400 m
  • Shooting direction: 0/180
  • Vessels: Ramform Explorer, Ramform Viking, Kondor
  • In partnership with: DPR

Acquisition parameters

  • Number of streamers: 8
  • Streamer length: 4 500/9 255 m
  • Streamer separation: 100 m
  • Shot interval: 37.5 m
  • Record length: 15 500 ms
  • Sample rate: 2 ms
  • Bin dimensions (Acquisition): 12.5x25 m
  • Fold: 60

Processing

  • Poststack time migration
  • Radon Demultiple

Time products

  • Post-Stack Time Migrated Stack
  • Stacking and Migration Velocities