Method for simulating streamer positioning, and for navigation aid
AssigneeCGG Marine
InventorPhilippe Brunet
Life of this patent
Estimating the term…
Abstract
The invention relates to a method of simulating the positioning of a streamer towed by a ship (10) during an operation of acquiring geophysical data at sea, said acquisition operation making use of shots from at least one sound source (Sa), the method implementing a hydrodynamic model of the interaction between marine current, the path of the ship, and the streamer, the method being characterized in that it includes determining variations in the current over time and in space. The invention also relates to a method of assisting navigation for a seismic survey ship, and to a method of predicting coverage fraction by implementing such a simulation method.
Claims27
A method of simulating the positioning of a streamer towed by a ship during an operation of acquiring geophysical data at sea, said acquisition operation making use of shots from at least one sound source, the method implementing a hydrodynamic model of interaction between marine current, a path of the ship, and the streamer, the method being characterized in that it includes determining variations in the current over time and in space.
A method of assisting the navigation of a ship towing at least one streamer in order to reduce zones of undercoverage and/or overcoverage generated during a geophysical data acquisition operation at sea during which the ship travels along a plurality of lines (Li, Li+1, Li+2) extending in a general Y direction defining an abscissa and forming an array covering a desired zone, the method being characterized in that it implements a method of simulating streamer positioning according to any preceding claim.
Dependencies are inferred from the claim text.