Cornerstone in the Central North Sea is now available in depth. The conventional data (N-S) long-offset datasets have been reprocessed with bandwidth enhancement to provide pseudo-broadband data which has been merged with newer BroadSeis datasets. All eight phases of acquisition have been combined to create a contiguous full PSDM volume covering over 35,000km2. This dataset has been rigorously imaged using TomoML velocity modeling with  nine horizons, extensive well control and dip-constrained tomography for the shallow channels, delivering regional coverage with local detail and definition.

Cornerstone TomoML


Cornerstone map
  • Over 35,000 km2 of contiguous, fully merged Kirchhoff PSDM data
  • Application of CGG’s new multi-layer tomography technique, TomoML, for better quality and faster velocity model building
  • Rigorous imaging using nine horizons, extensive well control and dip-constrained tomography for the shallow channels
  • Option to add CGG’s proprietary bandwidth extension and ghost compensation algorithm
  • Regional coverage with local detail and definition
  • Merged bandwidth-extended conventional and BroadSeis™ data
  • Dual Azimuth (DAZ) dataset for enhanced illumination, approx. 8,600 km2 over the HPHT area
  • Added value Pore Pressure Prediction (PPP) and Facies Finder products available

Dual Azimuth Area

The East-West Phase 8 BroadSeis data overlies the earlier conventional North-South data over the High Pressure High Temperature (HPHT) area of the Central North Sea. These two datasets were merged to produce a dual-azimuth volume, delivering:

  • Improved resolution and ghost-free broadband data
  • Better illumination of complex structures beneath the Base Cretaceous Unconformity
  • Improved sampling for true 3D processing algorithms to provide better noise and multiple attenuation
  • Optimal imaging from more accurate velocity and anisotropy models

Pore Pressure Prediction

PPP map
Pore Pressure Prediction

Cornerstone PPP provides volumetric pore pressure predictions to identify overpressure anomalies which could indicate potential pay zones or possible drilling hazards. CGG combines expertise across the geosciences to integrate high-resolution seismic and velocity models with petrophysical and well-log pressure data to deliver a range of pore pressure products to address the challenging HPHT North Sea reservoirs.

CGG offers more than 16,000 km2 of integrated PPP data (indicated in blue on map) as part of our Cornerstone data set.

Facies Finder

FaciesFinder Marconi

Facies Finder maximizes the value of seismic data early in the E&P cycle to highlight and de-risk potential prospects. It provides easy-to-interpret attribute volumes for lithology and fluid identification using an elastic inversion. The method requires no well calibration, making it suitable for exploration and screening for AVO anomalies.

All CGG multi-client data worldwide are available for license on a non-exclusive basis. Contact us for availability, quality inspection and pricing.

 Explore our interactive map and see details of all CGG's multi-client data in this area.

The right data, in the right place, at the right time

 Regional Contact 
 Regional Contact 

How broadband can unlock the remaining hydroc...

Gregor Duval
©2012 EAGE

Broadband seismic to support hydrocarbon expl...

Gregor Duval

Setting new standards for regional understand...

Steve Hollingworth | Owen Pape | Chris Purcell | Ewa Kaszyck...
©2015 EAGE
Multi-Client Data - Ireland

Porcupine Basin - Ireland

New broadband seismic in the Porcupine Basin off western Ireland.
Offshore - BroadSeis


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

Multi-Client Data - West of Shetland

West of Shetland

We have just reprocessed the Judd Basin 3D survey West of Shetland with the latest bandwidth extension and demultiple technology to deliver an advanced PSTM dataset to identify the remaining subtle tertiary traps.

Multi-Client Data - Lodestone


Better imaging in the Southern North Sea. All 3 areas reprocessed in depth using TomoML modelling and Q-wave amplitude compensation
Multi-Client Data - North Viking Graben

Northern Viking Graben

A huge integrated geoscience program covering over 35,000km2 of the Northern Viking Graben. BroadSeis-BroadSource ghost-free data with reservoir-oriented QC.
Subsurface Imaging - FWI

Full Waveform Inversion

Reveal intricate velocity details for the clearest images. Harness seismic low frequencies from BroadSeis, StagSeis, seabed and land data.

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Sustainability - Sustainable Development Report 2013


In 2014, CGG published its second Sustainable Development report as its 6th Communication on Progress.