NAM | PGS

Walvis Bay Basin - Namibia - 2012

NAM 2D GeoStreamer®

GeoStreamer with GeoSource survey across Walvis Bay Basin
Website Map for Survey MC2D NAMIBIA 2012
The survey covers more than 5 000 linear kilometers over the offshore blocks 2212B, 2313A, 2313B and 2413A.
Detailed images of syn-rift and post-rift structures that will enable more confident identification and mapping of prospects analogous to those prolific in the South American conjugate margins. Significantly derisks exploration in a frontier area where well costs are high.
GeoStreamer with GeoSource is an acquisition-based, broadband solution that removes both the source and receiver ghosts at an early stage in the pre-processing sequence. This has advantages in subsequent processing and produces high quality pre-stack and post-stack data.

Specifications

Survey summary

  • Type: 2D
  • GeoStreamer®
  • Geometry: Standard
  • Size: 5 662 km
  • Acquisition year: 2012
  • Completion of processing: 2012
  • Water depth: 150-2 000 m
  • Vessel: Sanco Spirit
  • In partnership with: Ministry of Mines and Energy and NAMCOR

Acquisition parameters

  • Number of streamers: 1
  • Streamer length: 8 100 m
  • Shot interval: 25 m
  • Record length: 9 000 ms
  • Sample rate: 2 ms
  • Bin dimensions (Acquisition): 6.25 m
  • Bin dimensions (Processing): 6.25 m
  • Fold: 162

Processing

  • Dual Sensor Wave Field separation and P-UP generation
  • High Resolution Radon Demultiple
  • Kirchhoff Pre-Stack Time Migration (PSTM)
  • 2D SRME Demultiple

Time products

  • Final Kirchhoff PSTM Stack
  • PSTM Gathers
  • Stacking Velocity
  • Migration Velocity
  • Angle Stacks