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US 9,541,662 B2Granted
Sensor towing by marine vessels
AssigneePGS Geophysical AS
InventorEinar Nielsen
Life of this patent
Estimating the term…
Abstract
A system. At least some illustrative embodiments are a system including a first survey vessel and a first tow line coupled to the first survey vessel. A first sensor streamer is coupled to the first tow line. Also includes are a second survey vessel and a second tow line coupled to the second survey vessel. A second sensor streamer is coupled to the second tow line and a pulling line is connected between the first tow line and the second tow line.
Claims19
A system comprising:
- a first survey vessel;
- a first tow line coupled to the first survey vessel;
- a first sensor streamer coupled to the first tow line;
- a second survey vessel;
- a second tow line coupled to the second survey vessel;
- a second sensor streamer coupled to the second tow line;
- and
- a pulling line connected between the first tow line and the second tow line;
- wherein the pulling line comprises a first portion and a second portion, the first portion coupled to the first tow line at a first end of the pulling line and the second portion coupled to the second tow line at a second end of the pulling line;
- the first portion and the second portion having a release device disposed therebetween.
7 more elements
A method comprising:
- deploying a first sensor streamer by a first survey vessel, the first sensor streamer deployed at a side of the first survey vessel facing a second survey vessel;
- deploying a second sensor streamer by the second survey vessel, the second sensor streamer deployed at a side of the second survey vessel facing the first survey vessel;
- deploying, by the first survey vessel, a first tow line, the first tow line attached to the first sensor streamer;
- deploying, by the second survey vessel, a second tow line, the second tow line attached to the second sensor streamer;
- attaching a first end of a pulling line to the first tow line;
- attaching a second end of the pulling line to the second tow line;
- and
- prior to attaching the second end of the pulling line, transferring the second end of the pulling line from the first survey vessel to the second survey vessel.
5 more elements
A method comprising:
- towing a first plurality of sensor streamers via a first tow line attached to a first survey vessel;
- towing a second plurality of sensor streamers via a second tow line attached to a second survey vessel;
- operating at least one of the first and second survey vessels to maintain a tension in a pulling line coupled between the first and second tow lines;
- detecting, by one or more first sensors in the first plurality of sensor streamers, first seismic acoustic signals from a first source reflected from a formation beneath a sea floor;
- detecting, by one or more first sensors in the second plurality of sensor streamers, the first seismic acoustic signals from the first source reflected from the formation beneath a sea floor;
- detecting, by one or more second sensors in the first plurality of sensor streamers, second seismic acoustic signals from a second source reflected from the formation beneath the sea floor;
- and
- detecting, by one or more second sensors in the second plurality of sensor streamers, second seismic acoustic signals from the second source reflected from the formation beneath the sea floor.
5 more elements
Dependencies are inferred from the claim text.