Patent ID: 9395459
Filing Date: 2016-07-19
CPC Classification: G01V

Claim Text:
1. A control device comprising: a body having first and second end portions adapted to be connected to respective sections of a marine seismic streamer; two opposed control surfaces projecting outwardly from the body, the two control surfaces including a first control surface extending along a first axis of extension in a first direction that is substantially perpendicular to a longitudinal axis of the body, and a second control surface extending along a second axis of extension in a second direction that is substantially perpendicular to the longitudinal axis of the body, and wherein the first control surface is rotatable about the first axis of extension and the second control surface is rotatable about the second axis of extension, each control surface being rotatable independently of each other and having a first configuration where the first and second control surfaces are at a different angular position angled with respect to each other so that the control surfaces jointly operate to produce a rolling force on the body, and a second configuration where the first and second control surfaces are at angular positions such that a same lift force is applied on each of the control surfaces so that the control surfaces jointly operate to adjust a lateral position of the streamer without producing a rolling force on the body; and a control circuit responsive to control signals adapted to independently adjust the angular positions of said control surfaces so as to control lift of each of said control surfaces and move the control surfaces between the first configuration and the second configuration to thereby control roll angle of the body and adjust the lateral position of the streamer.