NGA OPL 249 | PGS

Central Niger Delta - Nigeria - 1999

NGA OPL 249 3D

Conventional long offset MultiClient 3D data offshore Nigeria
Website Map for Survey NGA_249_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 each individual survey is available upon request.
It is located over the licensed block OML 140 and the open block OPL 248 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 within the OML 140 such as Nsiko, Nsiko North and Ofigbo proved the presence of working petroleum systems.

Specifications

Survey summary

  • Type: 3D
  • Geometry: SLO, Other
  • Size: 1 954 sq.km
  • Acquisition year: 1999
  • Completion of processing: 2004
  • Reprocessing: Yes
  • 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

  • Radon Demultiple
  • Bending Ray Kirchhoff Pre-Stack Time Migration (PSTM)

Time products

  • PSTM gathers
  • Kirchhoff Pre-Stack Time Migrated Stack
  • Angle stacks (Near and Far)
  • Difference volume
  • Stacking and Migration Velocities