StagSeis

StagSeis™ is a 'next-generation' solution for subsalt imaging designed to reduce exploration and production risk by providing the best seismic images below complex salt. It addresses the most challenging areas where conventional wide azimuth acquisition fails to illuminate targets below complex overburdens. It includes a patented acquisition design (staggered vessel configuration) with very long offsets (up to 20km) and full azimuth coverage (up to 10km) for improved illumination.

StagSeis improves illumination beneath complex overburdens compared with standard wide-azimuth.

Features and Benefits

• Ultra-long inline offset up to 20km
  • Improves subsalt velocity accuracy
  • Images steep dips
• Effective full azimuth coverage up to 10km
  • Improves illumination of complex geology
  • Allows more accurate salt model building
  • Improves natural multiple attenuation
• Linear tow
  • Consistent, regular azimuth, offset and fold distribution
  • Compatible with conventional WAZ processing techniques
    • Field data immediately available
    • Faster turnaround times
  • Scalable/ Repeatable suitable for development and 4D
• Compatible with BroadSeis™
  • Improves low frequencies for enhanced imaging below difficult geology (e.g. subsalt and sub-basalt)
  • Greater stability for seismic inversion
• Compatible with Dovetail™ fanned acquisition to reduce the need for infill caused by currents and improve survey turnaround time

Video: Stagseis - The Full-Azimuth Marine Imaging Solution

StagSeis is a game-changing, full-azimuth, ultra long-offset marine solution (2:52)

StagSeis Acquisition

StagSeis™ data are acquired using multiple vessels with an innovative staggered configuration, optimized to maximize the azimuth variation, and maintain the offset distribution. It has been developed to provide the ultra-long offsets, full azimuth and broad bandwidth (especially low frequencies) required to face the challenges of imaging in complex areas like the Gulf of Mexico.

It is fully compatible with BroadSeis™ broadband acquisition, adding enhanced low frequencies which further improve deep imaging and provide quantitative inversion results. Our state-of-the-art subsalt imaging technology and expertise ensure the best results with this new acquisition design. StagSeis can easily be infilled to a finer line spacing to increase resolution in promising areas and is easily repeatable for use as a 4D baseline survey.

The CGG MCNV StagSeis survey location in the Gulf of Mexico

Gulf of Mexico Multi-Client Data Library Surveys

We have acquired three StagSeis multi-client surveys in the Gulf of Mexico. Final data for all three are available as part of our data library program.