Caswell | PGS

Browse Basin - Australia

Caswell 3D GeoStreamer

PGS' flagship MC3D dataset in the highly prospective Browse Basin.
Website Map for Survey Caswell GeoStreamer MC3D
The Caswell MC3D GeoStreamer survey provides high resolution structural imaging of the many prospects and discoveries in the active Caswell sub-basin enabling evaluation of open acrage and farm-in opportunities.
The major prospective fairways lie within the Early-Middle Jurassic extensional phase, and the Late Jurassic-Cenozoic thermal subsidence phase.
True broadband GeoStreamer multisensor 3D seismic data combined with the latest 3D demultiple applications and PSDM FWI reprocessing workflow. Now part of the Browse Basin GeoStreamer PURE package.

Specifications

Survey summary

  • Type: 3D
  • GeoStreamer
  • Size: 9 224 sq.km
  • Acquisition year: 2013
  • Completion of processing: 2014
  • Water depth: 200-760 m
  • Shooting direction: North - South
  • Vessel: Ramform Explorer

Acquisition parameters

  • Number of streamers: 10
  • Streamer length: 7050 m
  • Streamer separation: 100 m
  • Shot interval: 18.75 m
  • Record length: 7168 ms
  • Sample rate: 2 ms

Processing

  • P-UP generation
  • 3D surface related multiple elimination (SRME)
  • Wave equation 3D SRME
  • High resolution radon demultiple
  • Full waveform inversion (FWI)
  • Kirchhoff prestack depth migration (PSDM)

Depth products

  • Final Kirchhoff PSDM stack
  • PSDM gathers
  • Anisotropy and velocity models
  • Final Kirchhoff PSDM angle stacks

Time products

  • Final Kirchhoff PSTM Stack
  • PSTM gathers

Additional products

  • Interpretation