Sercel Inc.

Nicolas Fradin

Xavier Brun

A method for automatically propagating a voltage along a marine seismic streamer, the method including detecting, at an ith concentrator of the streamer, a first voltage applied at a first high-voltage rail HV; detecting, at the ith concentrator of the streamer, a second voltage applied at a second high-voltage rail HV, the first and second high-voltage rails extend over the entire streamer; checking a predetermined condition at a first local controller of the ith concentrator; and closing a first switch SW, which propagates the first high-voltage rail HV, when the predetermined condition is satisfied.

Fast power on method for marine acquisition streamer

A marine seismic streamer includes plural concentrators, plural segments interposed with the plural concentrators so that a concentrator of the plural concentrators is sandwiched between two segments of the plural segments, a first high-voltage rail HVthat extends along the plural concentrators and the plural segments, and a second high-voltage rail HVthat extends along the plural concentrators and the plural segments. In each given concentrator i of the plural concentrators, there is a first switch SWplaced along one of the first high-voltage rail HVand the second high-voltage rail HV, a second switch SWplaced between the first high-voltage rail HVand the second high-voltage rail HV, a first local controller implemented in hardware, and a second local controller implemented in a combination of hardware and software, and having an operating system, the first local controller being separated from the second local controller.

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Nantes, France

Nicolas Fradin