H - Electricity – 02 – G
Patent
H - Electricity
02
G
H02G 1/10 (2006.01) G01V 1/20 (2006.01) G01V 1/38 (2006.01) H02G 1/04 (2006.01)
Patent
CA 2238074
A method of replacing an electronics module in a seismic cable on the open sea, (as well as a device for use in the replacing) where the replacement is carried out with the aid of a small boat equipped with cable rollers, the method comprising positioning the part of the cable including the electronics module on a first and a second cable roller respectively in such a way that the electronics module and its couplings are located between the two rollers, clamping the sections of cable on either side of the electronics module in a first and a second clamping arrangement (1, 2) respectively, with the clamping arrangement connected together via a mechanical tensioning device (3), moving the clamped sections of cable towards each other using the tensioning device in such a way that the tension in the seismic cable is taken up by the tensioning device, after which the electronics module can be removed and replaced after which the tensioning device (3) is slackened slightly and the clamping arrangement (1, 2) is released from the sections of cable before the part of the seismic cable with the new electronics module is replaced in the sea.
Cette invention concerne une méthode et un dispositif de remplacement d'un module électronique de câble de prospection sismique en haute mer, le remplacement se faisant à l'aide d'une petite embarcation équipée de poulies et selon les étapes suivantes : positionnement du câble sur une première et une seconde poulies de façon que le module électronique et ses organes de montage se trouvent entre lesdites poulies, pose de serre-câble (1, 2) de part et d'autre du module électronique, montage d'un tendeur mécanique (3) reliant les deux serre-câble, rapprochement des deux serre-câble au moyen du tendeur pour donner du mou au tronçon de câble portant le module électronique, démontage et remplacement du module, desserrage léger du tendeur (3), dépose des serre-câble (1, 2) et remise à l'eau du câble équipé du nouveau module électronique.
Aae Bjorn
Kvalheim Gerhard
Pettersen Jan Bjornar
Soraker Dag
Thomson Mallory
Geco As
Smart & Biggar
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