A method of controlling position of a seismic streamer (12) comprises: calculating magnitude and direction of a desired total force or displacement to apply to the seismic streamer; adjusting, based on forces exerted on the streamer by hydrodynamic deflecting surfaces (28) in a force axis, the calculated magnitude of total force or displacement to form an intermediate desired total force; adjusting a common angle between hydrodynamic deflecting surfaces (28) to produce the intermediate desired total force along the force axis; comparing the calculated desired common wing angle to the current common wing angle to calculate a change in the wing angle; and introducing a splay angle in to the hydrodynamic deflecting surfaces to produce a rotational movement to align the force axis with the direction of the desired total force.
Control system for the positioning of marine seismic streamers
Steuerungssystem zur Positionierung seismischer Streamer
Système de contrôle de la position des flûtes sismiques
2016-11-30
Patent
Electronic Resource
English
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