Caswell | PGS

Browse Basin - Australia - 2013

Caswell 3D GeoStreamer

PGS' flagship MC3D dataset in the highly prospective Browse Basin
Website Map for Survey Caswell GeoStreamer MC3D
The GeoStreamer Caswell MC3D provides greatly improved resolution and low frequency signal preservation over the existing data sets. The new data allows an improved resolution of the major structures of the Caswell Sub-basin and the distribution of the main source and reservoir packages.
The basin major prospective fairways lie within the Early-Middle Jurassic extensional phase, and the Late Jurassic-Cenozoic thermal subsidence phase.
True broadband Dual sensor 3D seismic data with pre-stack AVO/AVA fidelity.

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: 7 050 m
  • Streamer separation: 100 m
  • Shot interval: 18.75 m
  • Record length: 7 168 ms
  • Sample rate: 2 ms

Processing

  • 3D surface related multiple elimination (SRME)
  • High resolution radon demultiple
  • P-UP generation
  • Kirchhoff prestack time migration (PSTM)
  • Kirchhoff prestack depth migration (PSDM)

Depth products

  • Final Kirchhoff PSDM stack
  • PSDM gathers
  • PSDM angle stack near
  • PSDM angle stack mid
  • PSDM angle stack far
  • PSDM angle stack u-far

Time products

  • Final Kirchhoff PSTM Stack
  • Angle stack near
  • Angle stack mid
  • Angle stack far
  • PSTM gathers
  • Angle stack u-far