Method and system for controlling the position of marine...

Details Method and system for controlling the position of marine... Method and system for controlling the position of marine...

2011-04-26

2011-04-26

Hellner, Mark (Department: 3663)

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Offshore prospecting

C367S020000

Reexamination Certificate

active

07933163

ABSTRACT:
A method and control device for controlling the position of a marine seismic streamer spread and the ability for controlling individual marine seismic streamers both in shape and position relative to other marine seismic streamers and thereby counter effects from crosscurrent or other dynamic forces in a towed spread behind a seismic survey vessel. The system includes sensor means for determining information to control the streamer and a control device10, including a housing11mechanically and at least partly electrically connected in series between two adjacent sections of the streamer13, at least three control members20projecting from the housing11, and control means adjusting the respective angular positions of the control members20so as to control the lateral and vertical position of the streamer13. The rotational position of the streamer13and control device10is measured, and the measured rotational position is used to control the angular position of the control members20, and thus the lateral and vertical displacement of the streamer13.

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