GWL FloatSeis LF™
FloatSeis LF™ is the most cost-effective way to record data perfectly suitable for FWI application. FloatSeis LF™ data contains both ultra-long offsets and low frequency component that are required for a robust FWI algorithm output. FloatSeis LF™ service can be a game changer for offshore areas with screening layers and medias with high absorption qualities. Utilization of a portable, container based, easy-to-transport, assemble and install GWL LF Source™ allows to rig small tonnage vessels as a LF Shooting Vessel. Thus, cost per shot is times less in comparison to shooting by air gun arrays installed on a seismic vessel. FloatSeis LF™ acquisition will amount to 20-25% of extra costs to a CDP seismic streamer survey, providing superior data set for FWI full scale velocity model.
FloatSeis LF™ Surveys
Performed after or prior 2D/3D towed seismic streamer surveys;
Can be performed to compliment already existing vintage dataset and jump-start the new licensing round;
GWL Seismobuoys™ are deployed from a chase boat with GWL LF Source™ onboard;
GWL Seismobuoys™ are recovered from a chase boat / support vessel;
Recorded offset range is amounted up to 120 km (enabled by specially developed GWL LF Source™);
Recorded dataset has ultra-long offsets and Low Frequency spectra which makes it perfect for FWI;
Reliable FWI velocity model obtained times faster and cheaper in comparison to long offset OBN surveys.
Example of FloatSeis LF™ survey.
GWL Seismobuoy™ ultra-long offset Common Receiver Point gather
Effectively recorded offset length up to 120 km
FloatSeis™ FWI Velocity Model - 16 Hz
FWI velocity model obtained with help of FloatSeis™ long-offset data is well resolved and can be used for in initial geological interpretation itself. The higth velocity carbonate layer is prominent on the velocity section itself (in blue) and decently corresponds with the available well data.
Data perfectly suitable for
full depth range FWI application
GWL LF Source™ Vessel
FloatSeis™ Support Vessel