We provide a unique range of technologies, services and equipment designed to deliver geoscience solutions right across the Exploration & Production life cycle.
View all our multi-client data in your area. Explore the new and improved CGG GeoStore interactive map.
Get to know the mission, vision and values that drives us.
Learn how CGG's leaders and governance allow for successful operations.
Operating safely and with integrity in order to deliver sustainable performance.
CGG recognizes the 10 UNGC principles and publishes annually its communication on progress.
You’ll discover a place where you’ll continue to grow as you work with other talented professionals around the world.
Explore an extraordinary opportunity to help create the future solutions of geoscience challenges.
Our range of geoscience experience is unparalleled and leads us to invent and perfect technology and techniques unlike any other.
GeoTraining brings together the full breadth of CGG’s skill development programs to provide the E&P industry with comprehensive geoscience workforce learning path programs.
Expert, independent advice on the most appropriate satellite imagery (optical, radar) and elevation data products.
The benchmark for petrophysics, rock physics, facies analysis and statistical mineralogy. Collaborative multi-well log analysis made easy for better drilling decisions.
Processing and imaging time-lapse datasets requires great care and attention to detail which is why our experience really makes a difference. The aim of 4D processing is to attenuate the 4D noise caused by changes in acquisition parameters or environmental conditions, and to emphasise the 4D signature of the reservoir caused by changes in fluid, pressure and stress.
A key philosophy in 4D processing is to optimize for the 4D difference. For example with 4D demultiple, if you optimize for best multiple attenuation on each individual dataset you usually end up with a worse 4D result. We use 4D cost functions to allow a trade-off between what is best for processing and what gives the best 4D difference.
Static differences between vintages occur in both land and marine 4D surveys. They are caused by changes in the near-surface, weathering layer, water column or water surface conditions. Our range of strategies and algorithms include application of deterministic GPS-based tidal and waveheight corrections and statistical 4D corrections.
The regularization of 4D datasets uses bin centring and interpolation of missing data to create either regularly sampled datasets on a common grid, or to map monitor survey data onto a base survey grid. Our REVIVE technique uses up to 5 dimensions to dramatically increase the interpolation accuracy.
4D binning is an essential step in time-lapse processing which selects the most compatible data for 4D processing. Traces are selected from all of the vintages making up the 4D dataset which are best matched in terms of source, receiver and midpoint position, offset and azimuth. The binning criteria can be extended to include statistical measurements of 4D data quality such as cross-correlation, predictability and NRMS.
Systematic amplitude variations related to the acquisition geometry create a pattern or acquisition footprint. The footprint within each vintage is emphasized in the 4D difference. We use a 4D de-striping technique where data from all vintages are analyzed for systematic variations with respect to acquisition attributes, such as sail line, and scalars are calculated to compensate for them.
Matching is used to minimize residual 4D differences caused by acquisition and environmental variations which cannot be addressed by deterministic corrections. We have a range of sophisticated multi-vintage matching techniques to suit a wide range of 4D datasets, including the merging and 4D matching of streamer and OBC datasets.
Optimize enhanced oil recovery. Continuous, high-resolution onshore monitoring. Unparalleled sensitivity and repeatability. Remote autonomous operation. Understand reservoir dynamics.
Contact us by opening an online inquiry.
View CGG's extensive portfolio of products and solutions.
EITHER... search our portfolio of innovative solutions:
OR... browse our alphabetical directory of geoscience products and services: