Head-float and method
AssigneeCgg Services SAS
InventorHelene TONCHIA
Life of this patent
Estimating the term…
Abstract
Method and streamer/source head-float system for connecting to a head portion of a streamer or to a lead-in or providing information about a source. The system includes a head-buoy configured to float in water and connected through a cable to the head portion of the streamer or to the lead-in; a head-float configured to float in water; a connector connecting the head-float to the head-buoy; and positioning equipment attached to the head-float and configured to determine a position of the streamer or the source.
Claims20
A streamer head-float system connected to a head portion of a streamer or to a lead-in, the system comprising:
- a head-buoy configured to float in water and connected through a cable to the head portion of the streamer or to the lead-in;
- a head-float configured to float in water;
- a connector connecting the head-float to the head-buoy;
- and
- positioning equipment on the head-float and configured to determine a position of the streamer.
A head-float associated with a head portion of a streamer or a lead-in towed underwater, the head-float comprising:
- a body configured to float in water;
- a connector connecting the head-float to a head-buoy;
- and
- positioning equipment attached to the head-float and configured to determine a position of the streamer or a position of a source,
- wherein the head-float does not provide floatation to the streamer.
A method for performing a seismic survey, the method comprising:
- towing a streamer;
- connecting a head-buoy to a head portion of the streamer or to a lead-in;
- towing with the head-buoy a head-float configured to float in water;
- and
- determining a position of the streamer with positioning equipment attached to the head-float.
A method for replacing a head-float while being deployed on the water for a marine seismic survey, the method comprising:
- towing a streamer;
- connecting a head buoy to a head portion of the streamer or to a lead-in;
- towing with the head buoy the head-float, wherein the head-float is configured to float in water;
- and
- detaching the head-float from the head buoy for maintenance.
A head-float for providing position information associated with a seismic source towed underwater, the head-float comprising:
- a body configured to float in water;
- a connector connecting the head-float to a float of the seismic source;
- and
- positioning equipment attached to the head-float and configured to determine a position of the seismic source or a seismic streamer.
Dependencies are inferred from the claim text.