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Norwegian North Sea (NAZ)

Resolving basalts and sub basalt targets from scratch

Start model | XWI 1 | XWI 2 | XWI 3

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Gulf of Mexico Walker Ridge (OBN)

Salt geometry and sub salt targets from scratch

Start model | XWI 1a | XWI 1b | XWI 1c | XWI 2 | XWI 3

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North West Shelf Australia (NAZ)

Macro model updates from pure reflections

Start model | XWI 1 | XWI 2 | XWI 3

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Fully FWI based model building and imaging from legacy field data 

Conventional FWI gets trapped in local minima and has weak long wavelength updates at depth

 
Extremely simple starting model
Narrow azimuth streamer data*
Extremely challenging setting**
Norwegian North Sea complex basalts
GoM Walker Ridge complex salt
 
NWS Australia complex carbonates
 
*field data with limited offsets, missing low frequencies, and low signal to noise ratio
** locations with strong contrasts masking deeper reflectivity