Nexans and Sercel successfully trial advanced seismic sea bed system
The seabed seismic system can 'see' details of the subsurface which 'traditional' marine seismic surveys (conducted on the sea surface) cannot detect. A permanently installed seabed seismic system can also give repeated surveys with a much better accuracy than a traditional marine survey. The system can, therefore, be used both for surveys to locate new oil and gas reservoirs, and to monitor a reservoir during production in order to increase the yield from the reservoir.
The prime end users, for data provided by 'Deep Sea Link', are oil companies, but seismic contractors are involved in the acquisition of the data. Thus, both are potential customers for this system.
Commenting on the success of the trials, Pascal Portevin, President Telecom Division, Nexans, said: " We are very satisfied that the 'Deep Sea Link' system has performed so well in the trials. Nexans demonstrates in that way its technological innovation capacities in high value added areas. This system will be an invaluable tool to our customers involved in oil research".
Nexans' focus, in this co-operation, is the supply of the cable and cable terminations and Sercel on the sensors, electronic hardware and data acquisition system software.
Note to Editors
About 'Deep Sea Link'
Deep Sea Link consists of an instrumented communications cable deployed on the seabed down to depths of 2000 m, with units containing sensors (3 orthogonally mounted geophones and 1 hydrophone) and electronics distributed at short intervals along the entire length of the cable. The end product of the system is a 3-D image of the subsurface, showing the geological structures of oil and gas reservoirs. Both the cable, cable terminations, sensors, electronics and the sensor-/electronics packages have been extensively tested in laboratories in Norway and France before taking them to the field trial. The sensor and electronics performance was monitored during all the mechanical stress tests.