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 data example

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.

StagSeis map

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.

Staggered marine acquisition design for compl...

Fabrice Mandroux | Chu-ong Ting | Bob Montgomery | Alexandre...
©2013 SEG

Impact of Full-Azimuth and Long offset acquis...

Sabaresan Mothi-Venkatesan | Katherine Schwarz
©2013 EAGE

Benefits of integrated approaches for solving...

Conrad Judd | Risto Siliqi | Fabrice Mandroux | Jo Firth | C...
©2014 EAGE
Multi-Client Data - GOM StagSeis

GOM StagSeis

StagSeis full-azimuth, ultra-long-offset broadband data in the Gulf of Mexico. Enhanced illumination. Low-frequency penetration. Staggering subsalt images. Reduced risk.
Offshore - Low Frequency Recording

Ultra-Low Frequency Recording

See below salt and basalt. Build better reservoir models. Record useful data down to 2.5 Hz with Sentinel.
Offshore - BroadSeis


Broadest bandwidth, best low frequencies deliver accurate models for better decisions. Choose BroadSeis at all stages from exploration to production.

Offshore - Bespoke Multi-Vessel Solutions

Bespoke Multi-Vessel Solutions

We tailor our acquisition to meet your specific geological or operational challenge, don't settle for a one-size-fits-all survey.
Offshore - Products and Solutions

Offshore Products & Solutions

Advanced technologies and innovative solutions to address your acquisition challenges - increase resolution, enhance illumination and improve efficiency.
Offshore - People and Service

People and Service

Our experienced people make the difference, being knowledgeable, reliable and open, with the resources and expertise to go the extra mile.

Offshore (Marine)


Contact us by opening an online inquiry.

Offshore - Matt Bognar - StagSeis

Video: Clearest Subsalt Images

CGG StagSeis - An Innovation and Collaboration Success Story
Sustainability - Quietsea


Read more about Quietsea™ marine seismic equipment and its ecodesign.

Industry Articles


Explore CGG's impressive library of journal and magazine articles.



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