Technical Paper: Surface Multiple Attenuation Developments in the Clair Field

Society: EAGE
Paper Number: E102 08
Presentation Date: 2014


Multiples are a key problem over the Clair area, mainly caused by the complexity in the overburden. The paper describes a much improved combination of demultiples techniques, which have been applied to the latest Clair South West HDOBC survey. The sequence consists a top-down approach removing successive multiples with PZ summation, Wavefield Extrapolation Multiples Modeling, GSMP and TauPQ deconvolution.

Water bottom WEMM plays a key role, effectively predicting water layer multiples in a 3D sense. GSMP complements the results of the other techniques against short period multiples, but more importantly it also predicts other long period surface multiples which are cutting through at reservoir level. The results are a much improved level of multiples suppression, although some surface multiples contamination is still present, and internal multiples have not been attenuated

Related services and products

Request More Information

Multiple Attenuation Through Prediction and Adaptive Subtraction

Well-tie before and after interbed multiple attenuation
Our extensive portfolio of surface and internal multiple attenuation methods provides the optimal solution for your survey challenges and processing goals. Visit Multiple Attenuation page