Controller and method for steering sources
AssigneeCggveritas Services SA
InventorHelene TONCHIA
Life of this patent
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Abstract
A marine acoustic source system and method for steering a seismic source array in a body of water during a seismic survey. The method includes measuring an actual position of the seismic source array; calculating a virtual position of the seismic source array, wherein the virtual position corresponds to a position of the seismic source array when towed with no adjustment from a source steering device; retrieving a pre-plot path that includes desired positions of the seismic source array for the seismic survey; and steering the vessel based on the virtual position so that the virtual position lies on the pre-plot path.
Claims20
A method for steering a seismic source array in a body of water during a seismic survey, the method comprising:
- measuring an actual position of the seismic source array;
- calculating a virtual position of the seismic source array, wherein the virtual position corresponds to a position of the seismic source array when towed with no adjustment from a source steering device;
- retrieving a pre-plot path that includes desired positions of the seismic source array for the seismic survey;
- and
- steering the vessel based on the virtual position so that the virtual position lies on the pre-plot path.
A seismic surveying system configured to steer a seismic source array in a body of water during a seismic survey, the system comprising:
- a central control unit configured to,
- receive an actual position of the seismic source array, and
- calculate a virtual position of the seismic source array, wherein the virtual position corresponds to a position of the seismic source array when towed with no adjustment from a source steering device;
- a memory configured to store a pre-plot path that includes desired positions of the seismic source array for the seismic survey;
- and
- an integrated navigation system configured to steer a vessel that tows the source array based on the virtual position so that the virtual position lies on the pre-plot path.
A computer readable medium including computer executable instructions, wherein the instructions, when executed by a processor, implement a method for steering a seismic source array in a body of water during a seismic survey, the method comprising:
- measuring an actual position of the seismic source array;
- calculating a virtual position of the seismic source array, wherein the virtual position corresponds to a position of the seismic source array when towed with no adjustment from a source steering device;
- retrieving a pre-plot path that includes desired positions of the seismic source array for the seismic survey;
- and
- steering the vessel based on the virtual position so that the virtual position lies on the pre-plot path.
Dependencies are inferred from the claim text.