Marine seismic streamer with depth sensor calibrating means

Details Marine seismic streamer with depth sensor calibrating means Marine seismic streamer with depth sensor calibrating means

G - Physics

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G01V 1/38 (2006.01) G01S 3/80 (2006.01) G01V 1/20 (2006.01) G01V 13/00 (2006.01)

Patent

CA 1066797

ABSTRACT OF THE DISCLOSURE A marine seismic streamer section for a towed underwater streamer containing a buoyancy regulating fill liquid and the usual hydrophones, strain cables, signal wires and the like housed in a generally cylindrical tubular jacket sealed at its ends against loss of fill liquid and containing a depth sensor for producing electrical signals indicative of the depth of the streamer. The sensor is in a rigid housing whose interior is connected by a tube to a valved calibrating chamber having a valve member normally com- municating the interior of the depth sensor housing to the fill liquid pressure conditions in the jacket. The chamber has an ex- ternal access port normally closed by a plug, and the valve member is movable by a probe inserted through the port when the plug is removed and a source of gauged pressure connected to the access port to subject the interior of the depth sensor housing to the gauged pressure source.

275210

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