OBC 1 | PGS

Ship Shoal & Green Canyon Area - USA - 2007

OBC 1 3D

Dual sensor 3D full volume depth products from the Flex Trend ocean bottom cable survey
Website Map for Survey OBC 1
The Flex Trend is a contiguous area covering ~1500 OCS blocks, comprised of ten individual PSDM projects, reprocessed from 19 baseline surveys.
Exploration efforts on the shelf have historically focused on shallow targets. FlexR reveals significant further exploration potential in the lower Miocene deep gas play. Depth imaging is required due to the presence of salt.
The FlexR reprocessing project provides an updated inventory of detailed 3D seismic imaging over the Flex Trend. Better salt and subsalt imaging and enhanced fault definition are achieved through detailed velocity modeling, Kirchhoff, and wave equation prestack depth migration.

Specifications

Survey summary

  • Type: 3D
  • Geometry: Other
  • Size: 365.1 sq.km
  • Acquisition year: 2007
  • Completion of processing: 2008
  • Shooting direction: N - S
  • Vessel: Bourbon

Acquisition parameters

  • Streamer length: Ocean Bottom Cable Dual Sensor 8000m Offset m
  • Shot interval: 31.25 m
  • Record length: 10500 ms
  • Sample rate: 2 ms
  • Bin dimensions (Acquisition): 25 x 25 m
  • Bin dimensions (Processing): 25 x 40 m
  • Fold: 128

Processing

  • Kirchhoff Pre-Stack Time Migration (PSTM)
  • Kirchhoff Pre-Stack Depth Migration (PSDM)
  • Beam Depth Migration

Depth products

  • PSDM Gathers
  • Kirchhoff PreStack Depth Migration
  • Wave equation prestack depth migration
  • PreStack depth migration gathers
  • Beam Migration
  • Velocity model

Time products

  • PSTM Gathers
  • Kirchhoff PreStack Time Migration
  • Velocity Field
  • PreStack Time Migration Angle Stacks
  • PreStack Time Migration Offset Stacks

Additional products

  • Demultiple Gathers